Performance information

• INVESTIGATION OF THE WIND EFFECT ON THE FLOOD PROPAGATION AND DISCHARGE BY RAINFALL-RUNOFF-INUNDATION SIMULATION
  Kenichiro KOBAYASHI; Shii KAKIUCHI
  Japanese Journal of JSCE, Volume：81, Number：16, First page：n/a, Last page：n/a, Mar. 2025, [Reviewed], [Lead]
  Japan Society of Civil Engineers, Japanese, Scientific journal
  DOI：https://doi.org/10.2208/jscejj.24-16075
  DOI ID：10.2208/jscejj.24-16075, eISSN：2436-6021
• Hydrologic modeling and flood-frequency analysis under climate change scenario
  Binaya Kumar Mishra; Kenichiro Kobayashi; Akihiko Murata; Shin Fukui; Koji Suzuki
  Modeling Earth Systems and Environment, Volume：10, Number：4, First page：5621, Last page：5633, Jun. 2024, [Reviewed]
  Springer Science and Business Media LLC, Scientific journal
  DOI：https://doi.org/10.1007/s40808-024-02082-4
  DOI ID：10.1007/s40808-024-02082-4, ISSN：2363-6203, eISSN：2363-6211
• 球磨川流域における最大クラス洪水も考慮した川辺川ダムの治水効果推定　　　　　　　　　　　　　　　
  小林 健一郎; 矢野 真一郎; 伊島 実咲; 角 哲也; Duc Le; 川畑 拓矢
  Volume：80, Number：16, First page：n/a, 2024, [Reviewed]
  Japanese, Scientific journal
  DOI：https://doi.org/10.2208/jscejj.23-16068
  DOI ID：10.2208/jscejj.23-16068, ISSN：2436-6021
• Ensemble rainfall–runoff and inundation simulations using 100 and 1000 member rainfalls by 4D LETKF on the Kumagawa River flooding 2020
  Kenichiro Kobayashi; Le Duc; Takuya Kawabata; Atsushi Tamura; Tsutao Oizumi; Kazuo Saito; Daisuke Nohara; Tetsuya Sumi
  Progress in Earth and Planetary Science, Volume：10, Number：1, Feb. 2023, [Reviewed], [Lead]
  Abstract
  
  This paper presents the 1000 ensemble flood simulations using ensemble rainfalls simulated by 4D LETKF. The number of ensemble rainfall members is large as 1000 compared to the operational rainfall products of two-digit numbers to avoid sampling errors in the three-dimensional meteorological simulation based on chaotic theory. Using the large data set, 1000 ensemble rainfall–runoff for dam catchments and high-resolution inundation simulations of large area are carried out focusing on the Kumagawa river catchment. Herewith, the comparisons were carried out with 21-member ensemble rainfalls of an operational forecast by Japan Meteorological Agency and 100-member 4D-LETKF ensemble rainfalls simulated independent of 1000-member 4D-LETKF. At the same time, the accuracy of selective 100-member ensembles out of 1000 members is investigated. As a result, although many previous research works show a large number of ensemble simulations are necessary for three-dimensional meteorological field, the number could be reduced in the catchment-average rainfall–runoff and 2.5-dimensional inundation simulations given that the rainfall prediction has a certain level of accuracy since improving the discharge prediction accuracy with lower dimension is sometimes possible by adjusting the horizontally/vertically integrated model parameters determined by topography and soil characteristics in advance against the observed rainfall. Also, the 1000 ensembles could be classified into several patterns in horizontally accumulated 2D rainfall field. Likewise, the flood flow moves toward the low elevation area and river; thus, the resultant 2.5-dimensional flood field does not show much variety as three-dimensional meteorological simulation. The paper summarizes these studies.
  Springer Science and Business Media LLC, Scientific journal
  DOI：https://doi.org/10.1186/s40645-023-00537-3
  DOI ID：10.1186/s40645-023-00537-3, eISSN：2197-4284
• Assessment of Climate Change effect on the extreme flooding of Yodogawa River Basin　　　　　　　　　　　　　　　
  Kenichiro Kobayashi
  Jun. 2022, [Reviewed], [Lead]
• DETERMINING THE SOURCE OF SUSPENDED SEDIMENT AT THE DOWNSTREAM END OF THE RIVER BASIN USING STRUCTURAL EQUATION MODELLING
  Selline MUTISO; Tatsuya HIRAMI; Keisuke NAKAYAMA; Katsuaki KOMAI; Kenichiro KOBAYASHI
  Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Volume：78, Number：2, First page：I_919, Last page：I_924, 2022, [Reviewed]
  Japan Society of Civil Engineers, Scientific journal
  DOI：https://doi.org/10.2208/jscejhe.78.2_i_919
  DOI ID：10.2208/jscejhe.78.2_i_919, eISSN：2185-467X
• 3次元スキャナ及びカメラによる地表面標高の計測と高解像度洪水シミュレーションへの応用　　　　　　　　　　　　　　　
  小林健一郎; 奥山俊博; 北田雄広; 丸山恭介
  Volume：78, Number：2, First page：I_793, Last page：I_798, 2022, [Reviewed], [Lead]
• 1mメッシュ標高データを用いた地下空間浸水解析と避難リスクについての検討　　　　　　　　　　　　　　　
  井野川七虹; 小林健一郎
  Volume：78, Number：2, First page：I_415, Last page：I_420, 2022, [Reviewed]
• 単純極値変数と超過数の視点から見た降水量の極値の数理特性　　　　　　　　　　　　　　　
  北野利一; 渡部哲史; 小林健一郎
  Volume：77, Number：2, First page：I_1153, Last page：I_1158, Sep. 2021, [Reviewed]
• 佐用川流域を対象とした複数の流出モデルを用いた気候変動による流量変化予測　　　　　　　　　　　　　　　
  小林健一郎; 川邉結子; 渡部哲史; 北野利一; 丸山恭介
  Volume：77, Number：2, First page：I_181, Last page：I_186, Sep. 2021, [Reviewed], [Lead]
• 令和元年東日本台風による荒川中流部洪水再現　　　　　　　　　　　　　　　
  小林健一郎; 田中規夫; 丸山恭介; 田中翔; 渡部哲史; 北野利一
  Volume：77, Number：2, First page：I_1393, Last page：I_1398, Sep. 2021, [Reviewed], [Lead]
• Analysis of Evacuation Time for Vulnerable Individuals During Inundation of Lowland Areas
  Chang Yeon Bae; Kenichiro Kobayashi
  Journal of Disaster Research, Volume：16, Number：5, First page：866, Last page：873, Aug. 2021, [Reviewed], [Lead]
  There is an increasing demand for establishing pre-emptive measures for disaster management. However, there is a lack of support systems available for vulnerable individuals living in disaster-prone regions in Korea. This study constructs a multi-agent simulation model to analyze the evacuation time for Dongnae district and Yeonje district in Busan, Korea. In disaster-prone regions, vulnerable people experience difficulties, such as, obtaining updated information about the disaster situation, and this reduces their evacuation speed. Additionally, there is a possibility that the evacuation speed, while evacuating vulnerable people, may decrease due to environmental and geographic factors, including the slope and elevation of the areas. Therefore, this section of the society requires special attention and policies that are different from those made for people who may not face such calamities and are physically abled. An analysis based on factors such as road slopes and delays in evacuation due to flooding, was conducted to formulate realistic evacuation plans for people who are vulnerable. The location of shelters in the case of flooding in Dongnae and Yeonje district, have been better identified. Furthermore, it was confirmed that the evacuation time could be reduced if wide-area evacuation is implemented. This study provides a base for developing suitable shelters and evacuation plans for disaster-prone regions.
  Fuji Technology Press Ltd., Scientific journal
  DOI：https://doi.org/10.20965/jdr.2021.p0866
  DOI ID：10.20965/jdr.2021.p0866, ISSN：1881-2473, eISSN：1883-8030
• Estimation of paddy field dam effect on flood mitigation focusing on Suse region of Hyogo, Japan
  Kenichiro Kobayashi; Yasunori Kono; Takao Kimura; Haruya Tanakamaru
  Hydrological Research Letters, Volume：15, Number：3, First page：64, Last page：70, 2021, [Reviewed], [Lead]
  Japan Society of Hydrology and Water Resources, English, Scientific journal
  DOI：https://doi.org/10.3178/hrl.15.64
  DOI ID：10.3178/hrl.15.64, eISSN：1882-3416
• Ensemble flood simulation for a small dam catchment in Japan using nonhydrostatic model rainfalls – Part 2: Flood forecasting using 1600-member 4D-EnVar-predicted rainfalls　　　　　　　　　　　　　　　
  Kenichiro Kobayashi; Le Duc; Tsutao Oizumi; Kazuo Saito
  Natural Hazards and Earth System Sciences, Volume：20, Number：3, First page：755, Last page：770, Mar. 2020, [Reviewed]
  Abstract. This paper is a continuation of the authors' previous paper (Part 1) on the feasibility of ensemble flood forecasting for a small dam catchment (Kasahori dam; approx. 70 km2) in Niigata, Japan, using a distributed rainfall–runoff model and rainfall ensemble forecasts. The ensemble forecasts were given by an advanced four-dimensional, variational-ensemble assimilation system using the Japan
  Meteorological Agency nonhydrostatic model (4D-EnVar-NHM). A noteworthy feature of this system was the use of a very large number of ensemble members (1600), which yielded a significant improvement in the rainfall forecast compared to Part 1. The ensemble flood forecasting using the 1600 rainfalls succeeded in indicating the necessity of emergency flood operation with the occurrence probability and enough lead time (e.g., 12 h) with regard to an extreme event. A new method for dynamical selection of the best ensemble member based on the Bayesian reasoning with different evaluation periods is proposed. As the result, it is recognized that the selection based on Nash–Sutcliffe efficiency (NSE) does not provide an exact discharge forecast with several hours lead time, but it can provide some trend in the near future.
  Copernicus GmbH, English, Scientific journal
  DOI：https://doi.org/10.5194/nhess-20-755-2020
  DOI ID：10.5194/nhess-20-755-2020, ISSN：1561-8633, eISSN：1684-9981, Web of Science ID：WOS:000521640000002
• A Rainfall-Runoff/Flood-Inundation Model for Myohoji River Basin Kobe Japan with Rainwater Sewage Channels　　　　　　　　　　　　　　　
  Kenichiro Kobayashi; Astushi Tamura; Ichiro Fujita; Akinobu Yamamoto; Kazuyoshi Kanayama
  Proceedings of the 22nd IAHR-APD Congress (https://iahrapd2020.xsrv.jp/proceedings/pdf/4-3-8.pdf), First page：1, Last page：6, 2020, [Reviewed], [Lead]
• EVACUATION ANALYSIS FOR OPTIMAL-LOCATING OF FLOOD DISASTER SHELTERS FOCUSING ON ULSAN METROPOLITAN CITY　　　　　　　　　　　　　　　
  BAE Chang Yeon; 小林健一郎
  土木学会論文集 B1(水工学)(Web), Volume：76, Number：2, 2020, [Reviewed]
  ISSN：2185-467X, J-Global ID：202202267563247026
• Inundation analysis using coupling storage function model with a distributed hydrological model in Kushiro marsh, Japan
  Shino Sakaguchi; Keisuke Nakayama; Kenichiro Kobayashi; Katsuaki Komai
  Hydrological Research Letters, Volume：14, Number：2, First page：75, Last page：80, 2020, [Reviewed]
  Japan Society of Hydrology and Water Resources, Scientific journal
  DOI：https://doi.org/10.3178/hrl.14.75
  DOI ID：10.3178/hrl.14.75, eISSN：1882-3416
• PROCESS UNDERSTANDING OF THE TOGAGAWA RIVER FLOODING 2008 USING A DISTRIBUTED RAINFALL-RUNOFF/FLOOD-INUNDATION MODEL　　　　　　　　　　　　　　　
  KENICHIRO KOBAYASHI; RYO KAWASAKI; ICHIRO FUJITA; KEISUKE NAKAYAMA
  38th IAHR World Congress - "Water: Connecting the World", Sep. 2019, [Reviewed]
  The International Association for Hydro-Environment Engineering and Research (IAHR), International conference proceedings
  DOI：https://doi.org/10.3850/38wc092019-0642
  DOI ID：10.3850/38wc092019-0642
• ANALYSIS OF LARGE SCALE EVACUATION DRILL BY ASHIYA HIGH-SCHOOL AND ITS REPRODUCTION USING MULTIAGENT EVACUATION MODEL　　　　　　　　　　　　　　　
  小林健一郎; 千郷直斗; 丸山満帆; 木村圭佑; 浜中俊行; BAE Chang Yeon; MENG Fansong
  土木学会論文集 B1(水工学)(Web), Volume：75, Number：2, Aug. 2019, [Reviewed]
  ISSN：2185-467X, J-Global ID：202102254524340530
• A STUDY ON WEATHER INDEX INSURANCE PRICING USING D4PDF　　　　　　　　　　　　　　　
  小林健一郎; 木下信孝; 丸谷靖幸; 川邊結子; 中村皓人
  土木学会論文集 B1(水工学)(Web), Volume：75, Number：2, First page：I_1033, Last page：I_1038, Aug. 2019, [Reviewed], [Lead]
  ISSN：2185-467X, J-Global ID：202102265863167227
• 貯水池底層における貧酸素水塊発生機構の解明　　　　　　　　　　　　　　　
  山元幸之助; NAKAYAMA KEISUKE; 藤井智康; 藤原建紀; 清水武俊; KOBAYASHI KENICHIRO
  土木学会論文集B1（水工学）, Volume：74, Number：5, First page：I, Last page：535-I_540, Dec. 2018, [Reviewed]
  Japanese, Scientific journal
• 浅水流方程式・局所慣性方程式の精度検証と最適空間解像度に関する検討　　　　　　　　　　　　　　　
  KOBAYASHI KENICHIRO; NAKAYAMA KEISUKE; 阪口詩乃
  土木学会論文集B1（水工学）, Volume：74, Number：5, First page：I, Last page：1513-I_1518, Dec. 2018, [Reviewed]
  Japanese, Scientific journal
• 洪水氾濫シミュレーションにおいて風の影響を考慮する必要性に関する検討　　　　　　　　　　　　　　　
  KOBAYASHI KENICHIRO; NAKAYAMA KEISUKE; 田中翔; 阪口詩乃; 奥勇一郎; 池内幸司
  土木学会論文集B1（水工学）, Volume：74, Number：5, First page：I, Last page：1459-I_1464, Dec. 2018, [Reviewed]
  Japanese, Scientific journal
• 河川出水による貯水池の底層水交換モデルの提案　　　　　　　　　　　　　　　
  KEISUKE NAKAYAMA; 藤原建紀; 藤井智康; KOBAYASHI KENICHIRO; 清水武俊; 佐藤啓央; 山元幸之助
  土木学会論文集B1(水工学), Volume：74, Number：4, First page：355, Last page：360, Feb. 2018, [Reviewed]
  土木学会, Japanese, Scientific journal
• INVESTIGATION OF THE WIND SHEAR STRESS EFFECT ON FLOOD INUNDATION SIMULATION
  Kenichiro KOBAYASHI; Keisuke NAKAYAMA; Sho TANAKA; Shino SAKAGUCHI; Yuichiro OKU; Koji IKEUCHI
  Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Volume：74, Number：5, First page：I_1459, Last page：I_1464, 2018, [Reviewed]
  Japan Society of Civil Engineers, Scientific journal
  DOI：https://doi.org/10.2208/jscejhe.74.5_i_1459
  DOI ID：10.2208/jscejhe.74.5_i_1459, eISSN：2185-467X
• 損害保険のための日本全域洪水リスク評価モデルの開発（２）リスク評価モデルの構築と適用例　　　　　　　　　　　　　　　
  長野智絵; 津守博通; 稲村友彦; 佐野肇; 小林健一郎; 佐山敬洋; 寶馨
  2018, [Reviewed]
• 損害保険のための日本全域洪水リスク評価モデルの開発（１）確率降雨イベントモデルの開発,　　　　　　　　　　　　　　　
  長野智絵; 津守博通; 稲村友彦; 佐野肇; 小林健一郎; 佐山敬洋; 寶馨
  2018, [Reviewed]
• Integral porosity shallow water model at district scale - Case study in Nice
  Finn Amann; Ilhan Özgen; Morgan Abily; Jiaheng Zhao; Dongfang Liang; Kenichiro Kobayashi; Satoru Oishi; Philippe Gourbesville; Reinhard Hinkelmann
  E3S Web of Conferences, Volume：40, First page：06018, Last page：06018, 2018, [Reviewed]
  After three hours of intense rainfall, the city of Nice was flash flooded on October 3, 2015, resulting in casualties and severe damages in property. This study presents a porous shallow water-model based numerical simulation of the flash flood event in a district of Nice, and compares the results with a high-resolution conventional shallow water model. This contribution aims to discuss practical aspects of applying a porous shallow water model to a real world case. The porous shallow water model is an integral porosity-type shallow water model. It uses unstructured triangular meshes. The conventional shallow water model is a distributed memory parallelized high-performance computing code, that uses a uniform Cartesian grid. The study site is an approximately 5 km2 spanning district of the city of Nice, France. Topography information is available in a 1m resolution and in addition, the available digital elevation model includes inframetric structures such as walls and small bridges. In the presentation of the case study, challenges of the pre-processing step of the integral porosity shallow water model are addressed. Notably, a method to semi-automatically generate “good” triangular meshes using the open-source geoinformation system QGIS and the mesh generator Gmsh is presented. During the post-processing step, the results of the porous model are mapped back onto the high-resolution topography to make the results more meaningful. The agreement between the high-resolution reference solution and the porous model results are poor. A speed up of about 10 to 15 was observed for the present case.
  EDP Sciences, Scientific journal
  DOI：https://doi.org/10.1051/e3sconf/20184006018
  DOI ID：10.1051/e3sconf/20184006018, eISSN：2267-1242
• Numerical study of building drag dissipation for- mulations in the integral porosity shallow water model
  Özgen Ilhan; Martin Bruwier; Jiaheng Zhao; Dongfang Liang; Pierre Archambeau; Benjamin Dewals; Kenichiro Kobayashi; Satoru Oishi; Reinhard Hinkelmann
  E3S Web of Conferences, Volume：40, First page：06017, Last page：06017, 2018, [Reviewed]
  The integral porosity shallow water model is a type of porous shallow water model for urban flood modeling, that defines two types of porosity, namely a volumetric porosity inside the computational cell and a conveyance porosity at each edge. Porosity terms are determined directly from the underlying building geometry, hence buildings do not need to be discretized exactly. This enables simulations with significantly reduced CPU time on meshes with cell sizes larger than the building size. Here, the macroscopic model view leads to an additional source term at the unresolved building-fluid interface, yielding a building drag dissipation source term. In literature, several formulations for this term can be found. The integral porosity shallow water model is sensitive to the building drag dissipation, and using the drag parameters as a calibration parameter enhances the accuracy of model results. However, the ideal way to achieve this is still an open research question. In this contribution, we present a simple technique to estimate building drag dissipation that uses the conveyance porosity configuration to estimate the projected area inside the cell, which is then used in a drag force equation. The advantage of this approach is that it is computationally inexpensive, no additional parameters need to be stored, and only a single parameter has to be calibrated. The proposed approach is compared with drag dissipation formulations from existing literature in a laboratory experiment that features a dam-break against an isolated obstacle. The aim of the comparison is to evaluate present existing building drag dissipation models with regard to accuracy and computational cost.
  EDP Sciences, Scientific journal
  DOI：https://doi.org/10.1051/e3sconf/20184006017
  DOI ID：10.1051/e3sconf/20184006017, eISSN：2267-1242
• RUNOFF ANALYSIS USING QUASI-LONGWAVE EQUATIONS
  Shino SAKAGUCHI; Keisuke NAKAYAMA; Kenichiro KOBAYASHI
  Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Volume：74, Number：4, First page：I_1423, Last page：I_1428, 2018, [Reviewed]
  Japan Society of Civil Engineers, Scientific journal
  DOI：https://doi.org/10.2208/jscejhe.74.i_1423
  DOI ID：10.2208/jscejhe.74.i_1423, eISSN：2185-467X
• 貯水池における出水時の成層場鉛直混合に関する検討　　　　　　　　　　　　　　　
  NAKAYAMA KEISUKE; 藤原建紀; 藤井智康; 小林健一郎; 中島祐輔; 佐藤啓央
  土木学会論文集B1（水工学）, Volume：73, Number：4, First page：I, Last page：979-I_984, Mar. 2017, [Reviewed]
  Japanese, Scientific journal
  ISSN：1880-8751, CiNii Articles ID：40021163800, CiNii Books ID：AN10426673
• Accuracy of KU-STIV for discharge measurement in Ghana, Africa　　　　　　　　　　　　　　　
  Ichiro FUJITA; Kenichiro KOBAYASHI; Frederick Yaw LOGAH; Frank TEYE OBLIM; Bob ALFA; Saya TATEGUCHI; Kwabena KANKAM-YEBOAH; Gabriel APPIAH Collins; Kissi ASANTE-SASU; Ryo KAWASAKI; Hirohiko ISHIKAWA
  Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Volume：73, Number：4, First page：I_499, Last page：I_504, Mar. 2017, [Reviewed]
  English, Scientific journal
  ISSN：1880-8751, CiNii Articles ID：40021162912, CiNii Books ID：AN10426673
• EVALUATION OF LANDSLIDE DISASTER BY PSEUDO GLOBAL WARMING EXPERIMENT RAINFALL AND SOIL WATER INDEX ON SHINGU RIVER BASIN, WAKAYAMA WITH TYPHOON T1204　　　　　　　　　　　　　　　
  西岡誠悟; KOBAYASHI KENICHIRO; 奥勇一郎; 江種伸之; 田内裕人
  土木学会論文集B1(水工学), Volume：61, Number：4, First page：Ⅰ_187, Last page：192, 2017, [Reviewed]
  Japanese, Scientific journal
  ISSN：1880-8751, CiNii Articles ID：40021162297, CiNii Books ID：AN10426673
• INVESTIGATION OF APPLICABILITY OF A LONG WAVE EQUATION FOR INUNDATION ANALYSIS　　　　　　　　　　　　　　　
  Kenichiro KOBAYASHI; Keisuke NAKAYAMA; Shino SAKAGUCHI
  Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Volume：73, Number：4, First page：I_1405, Last page：I_1410, 2017, [Reviewed], [Lead]
  Japan Society of Civil Engineers, Japanese, Scientific journal
  DOI ID：10.2208/jscejhe.73.i_1405, ISSN：1880-8751, eISSN：2185-467X, CiNii Articles ID：40021164771, CiNii Books ID：AN10426673
• Ensemble flood simulation for a small dam catchment in Japan using 10 and 2aEuro-km resolution nonhydrostatic model rainfalls　　　　　　　　　　　　　　　
  Kenichiro Kobayashi; Shigenori Otsuka; Apip; Kazuo Saito
  NATURAL HAZARDS AND EARTH SYSTEM SCIENCES, Volume：16, Number：8, First page：1821, Last page：1839, Aug. 2016, [Reviewed]
  This paper presents a study on short-term ensemble flood forecasting specifically for small dam catchments in Japan. Numerical ensemble simulations of rainfall from the Japan Meteorological Agency nonhydrostatic model (JMA-NHM) are used as the input data to a rainfall-runoff model for predicting river discharge into a dam. The ensemble weather simulations use a conventional 10aEuro-km and a high-resolution 2aEuro-km spatial resolutions. A distributed rainfall-runoff model is constructed for the Kasahori dam catchment (approx. 70aEuro-km(2)) and applied with the ensemble rainfalls. The results show that the hourly maximum and cumulative catchment-average rainfalls of the 2aEuro-km resolution JMA-NHM ensemble simulation are more appropriate than the 10aEuro-km resolution rainfalls. All the simulated inflows based on the 2 and 10aEuro-km rainfalls become larger than the flood discharge of 140aEuro-m(3)aEuro-s(-1), a threshold value for flood control. The inflows with the 10aEuro-km resolution ensemble rainfall are all considerably smaller than the observations, while at least one simulated discharge out of 11 ensemble members with the 2aEuro-km resolution rainfalls reproduces the first peak of the inflow at the Kasahori dam with similar amplitude to observations, although there are spatiotemporal lags between simulation and observation. To take positional lags into account of the ensemble discharge simulation, the rainfall distribution in each ensemble member is shifted so that the catchment-averaged cumulative rainfall of the Kasahori dam maximizes. The runoff simulation with the position-shifted rainfalls shows much better results than the original ensemble discharge simulations.
  COPERNICUS GESELLSCHAFT MBH, English, Scientific journal
  DOI：https://doi.org/10.5194/nhess-16-1821-2016
  DOI ID：10.5194/nhess-16-1821-2016, ISSN：1561-8633, Web of Science ID：WOS:000383154600002
• ゲリラ豪雨に対する都賀川の流出モデル開発と河川監視カメラを活用した水位流量ハイドロの検証　　　　　　　　　　　　　　　
  Fujita Ichiro; Kobayashi Kenichiro; Okuyama Takaya; Kumano Genki
  土木学会論文集Ｂ１（水工学）, Volume：72, Number：4, First page：I_151, Last page：I_156, 2016, [Reviewed]
  土木学会, Japanese, Scientific journal
• Parallel computing for high-resolution/large-scale flood simulation using the K supercomputer　　　　　　　　　　　　　　　
  Kobayashi Kenichiro; Kitamura Dai; Ando Kazuto; Ohi Noriyuki
  Hydrological Research Letter, Volume：9, Number：4, First page：61, Last page：68, Nov. 2015, [Reviewed]
  This paper reports the implementation of high-performance computing using the K supercomputer in Kobe, Japan, for large-scale/high-resolution flood simulation. Supercomputer K was developed in 2012 by RIKEN and Fujitsu and ranked first in the list of Top 500 supercomputer sites in 2011 during its development stage. A two-dimensional inundation simulation model developed based on a shallow water equation using an existing numerical scheme was parallelized with the K supercomputer. Osaka and other cities along the Yodo River were chosen as application sites and the area discretized by 12824442 (= 3453 × 3714) nodes with a resolution of 10 m. The computational time for the five-hour flood simulation was measured by changing the number of 8-core CPUs of the K supercomputer. As a result, computational time was decreased to 9.3 min by using 128 × 64 = 8192 8-core CPUs. The computational time was 1423.7 min for one 8-core CPU. Thus, the simulation speed increased by a factor of 153.2 with the use of the K supercomputer.
  Japan Society of Hydrology and Water Resources, English, Scientific journal
  DOI：https://doi.org/10.3178/hrl.9.61
  DOI ID：10.3178/hrl.9.61, ISSN：1882-3416, CiNii Articles ID：130005108338
• 平成25年台風18号を対象としたWRFによる降水の再現と海面水温温暖化実験　　　　　　　　　　　　　　　
  NOTOYA Taku; KOBAYASHI Kenichiro; OKU Yuichiro; KIMURA Keisuke
  土木学会論文集B1(水工学), Volume：71, Number：4, First page：I_397, Last page：I_402, Feb. 2015, [Reviewed]
  Recently heavy rains occur frequently and researchers consider a climate change may be one of the causes. Thus, this study estimates the influence of the sea surface temperature changes on rainfall intensity due to a Typhoon. First the Typhoon No.18, 2013 which caused heavy damage on Kyoto and Shiga prefectures due to the heavy rainfall is reproduced (control run). Then its SST global warming experiment is carried out using latest meso-scale meteorological model WRF. As the result of the SST global warming experiment, the catchment average rainfall of the Yodogawa river above Hirakata becomes 1.5 times larger than that of the control run. This result indicates a possibility that further heavier rainfall may occur in the future due to a climate change.
  土木学会, Japanese, Scientific journal
  DOI：https://doi.org/10.2208/jscejhe.71.I_397
  DOI ID：10.2208/jscejhe.71.I_397, ISSN：2185-467X, CiNii Articles ID：130005123605, CiNii Books ID：AA12199490
• マルチエージェントシミュレーションによる西宮広域津波避難訓練の再現と考察　　　　　　　　　　　　　　　
  KIMURA Keisuke; KOBAYASHI Kenichiro
  土木学会論文集B1(水工学), Volume：71, Number：4, First page：I_1375, Last page：I_1380, Feb. 2015, [Reviewed]
  Nishinomiya city has conducted a large-scale evacuation exercise for the citizens against the assumed Nankai-Trough Tsunami disaster on January 27th 2013. In the occasion, we conducted the observation of the evacuee behaviors by GPS loggers. Then, a numerical evacuation model based on a multi-agent theory is constructed. The complex road network is incorporated in the modelling with the modification of some roads based on the on-site survey. The retardation of the evacuation by the evacuee density is also considered. The simulation is compared with the GPS log. The results indicate that the situation of evacuation training is reproduced by the model on some level. Finally, the evacuation of large number of people (10000) is tested with the numerical model.
  土木学会, Japanese, Scientific journal
  DOI：https://doi.org/10.2208/jscejhe.71.I_1375
  DOI ID：10.2208/jscejhe.71.I_1375, ISSN：2185-467X, CiNii Articles ID：130005123451, CiNii Books ID：AN10426673
• Impact of Climate Change on River Flows in the Black Volta River　　　　　　　　　　　　　　　
  SAWAI Nobuhiko; KOBAYASHI Kenichiro; Apip; TAKARA Kaoru; ISHIKAWA Hirohiko; YOKOMATSU Muneta; SAMADDAR Subhajyoti; JUATI Ayilari-Naa; KRANJAC-BERISAVLJEVIC Gordana
  Journal of Disaster Research, Volume：9, Number：4, First page：432, Last page：442, Jun. 2014, [Reviewed]
  English, Scientific journal
• A high-resolution large-scale flood hazard and economic risk model for the property loss insurance in Japan　　　　　　　　　　　　　　　
  KOBAYASHI KENICHIRO; TAKARA KAORU; SANO HAJIME; TSUMORI HIROMICHI; SEKII KATSUYOSHI
  Journal of Flood Risk Management, Volume：DOI: 10.1111/jfr3.12117, Jun. 2014, [Reviewed]
  English, Scientific journal
• FLOOD SCALE CHANGE ON YODOAWA RIVER CATCHMENT BY ISEWAN TYPHOON PSUEDO-GLOBAL WARMING EXPERIMENT　　　　　　　　　　　　　　　
  KOBAYASHI Kenichiro; OKU Yuichiro; NAKAKITA Eiichi; NAKANO Masuo; TAKARA Kaoru
  PROCEEDINGS OF THE JAPANESE CONFERENCE ON HYDRAULICS, Volume：70, Number：4, First page：I_391, Last page：I_396, Feb. 2014, [Reviewed]
  This paper deals with a methodology to estimate the variations of flood hazard and risk due to a climate change. A pseudo global warming (pgw) experiment result of the Isewan Typhoon in 1959 is used as the rainfall input with a climate change effect to a distributed rainfall-runoff/flood inundation (DRR/FI) model. The simulated rainfalls of the control run (ctl) for the reproduction of the Isewan Typhoon as well as pgw experiment by JMA-NHM exhibit that, though the 48-hrs rainfall of ctl underestimates the observation, the maximum hourly rainfall of pgw becomes much higher than the observation. As the result, the simulated water level/discharge and inundation depth with pgw rainfall becomes all worse than those of the Isewan Typhoon.
  Japan Society of Civil Engineers, Japanese, Scientific journal
  DOI：https://doi.org/10.2208/jscejhe.70.I_391
  DOI ID：10.2208/jscejhe.70.I_391, ISSN：2185-467X, CiNii Articles ID：130005070266
• 伊勢湾台風擬似温暖化実験による淀川流域の洪水規模変化予測　　　　　　　　　　　　　　　
  KOBAYASHI Kenichiro; OKU Yuichiro; NAKAKITA Eiichi; NAKANO Masuo; TAKARA KAORU
  土木学会論文集B1（水工学）, Volume：70, Number：4, First page：I_391, Last page：I_396, Feb. 2014, [Reviewed]
  This paper deals with a methodology to estimate the variations of flood hazard and risk due to a climate change. A pseudo global warming (pgw) experiment result of the Isewan Typhoon in 1959 is used as the rainfall input with a climate change effect to a distributed rainfall-runoff/flood inundation (DRR/FI) model. The simulated rainfalls of the control run (ctl) for the reproduction of the Isewan Typhoon as well as pgw experiment by JMA-NHM exhibit that, though the 48-hrs rainfall of ctl underestimates the observation, the maximum hourly rainfall of pgw becomes much higher than the observation. As the result, the simulated water level/discharge and inundation depth with pgw rainfall becomes all worse than those of the Isewan Typhoon.
  土木学会, Japanese, Scientific journal
  DOI：https://doi.org/10.2208/jscejhe.70.I_391
  DOI ID：10.2208/jscejhe.70.I_391, ISSN：2185-467X, CiNii Articles ID：130005070266
• Replication of Tsunami Evacuation Training in Nishinomiya Using Multi Agent Model　　　　　　　　　　　　　　　
  Kimura Keisuke; Kobayashi Kenichiro
  Proceeding of Annual Conference, Volume：27, First page：100090, Last page：100090, 2014
  To prevent the Tsunami disaster caused by big earthquake, we must evacuate to the higher elevation zone. The actual evacuation training is considered most important to realize the purpose. However, the numerical evacuation model is helpful to obtain more insight as it can simulate the training situation for many cases. To repeat the evacuation training many times for many situations is time consuming.  Thus, this study focuses on constructing an evacuation model. Concretely we refer to Nishinomiya-city large scale evacuation training managed by the municipal government.  The numerical evacuation model is constructed based on GPS pedestrian behavior data measured at the training time. The complex road network is incorporated in the modelling with the modification of some roads based on the on-site survey. The random speed of the pedestrian is considered in the modelling. As the result, we succeed in reproducing the situation of evacuation training by the model on some level.
  THE JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES, Japanese
  DOI：https://doi.org/10.11520/jshwr.27.0_100090
  DOI ID：10.11520/jshwr.27.0_100090, CiNii Articles ID：130005482033
• Reproduction of the Heavy Rain by Typhoon 1318 and Its SST Global Warming Numerical Experiment using Meso-Scale Meteorological Model　　　　　　　　　　　　　　　
  Notoya Taku; Kobayashi Kenichiro; Oku Yuichiro; Kimura Keisuke
  Proceeding of Annual Conference, Volume：27, First page：100131, Last page：100131, 2014
  Recently heavy rains occur frequently and researchers consider a climate change may be one of the causes. Thus, this study estimates the influence of the change of sea surface temperature on rainfall due to a Typhoon. First the Typhoon No.18, 2013 which caused heavy damage on Kyoto and Shiga prefectures due to the heavy rainfall is reproduced (control run). Then its SST global warming experiment is carried out using latest meso-scale meteorological Model WRF. As the result of the SST global warming experiment, the catchment average rainfall of Yodogawa river above Hirakata becomes 1.5 times larger than that of control run. This result indicates the possibility that further heavier rainfall may occur in the future due to a climate change.
  THE JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES, Japanese
  DOI：https://doi.org/10.11520/jshwr.27.0_100131
  DOI ID：10.11520/jshwr.27.0_100131, CiNii Articles ID：130005482088
• 洪水予測技術の現状と課題について　　　　　　　　　　　　　　　
  TSUBAKI Ryota; KOBAYASHI Kenichiro; NAITO Masahiko; TANIGUCHI Sususmu
  河川技術論文集, Volume：19, First page：1, Last page：6, 2014, [Reviewed]
  土木学会, Japanese, Scientific journal
  DOI：https://doi.org/10.11532/river.21.0_425
  DOI ID：10.11532/river.21.0_425
• Frequency analysis of extreme events for disaster management　　　　　　　　　　　　　　　
  Kaoru Takara; Kenichiro Kobayashi
  Journal of Disaster Research, Volume：8, Number：1, First page：147, Last page：148, Feb. 2013
  English, Scientific journal
  ISSN：1881-2473, SCOPUS ID：84873451736
• Ensemble forecasting of rainfall and flood in a small river basin
  KOBAYASHI KENICHIRO
  The Journal of Japan Society of Civil Engineers, Ser. B1, Volume：69, Number：4, First page：1597, Last page：1602, Feb. 2013, [Reviewed]
  Jap, Japanese, Scientific journal
  ISSN：1880-8751, CiNii Articles ID：40019820969
• メソアンサンブルによる予報　　　　　　　　　　　　　　　
  SAITO KAZUO; ORIGUCHI SEIJI; Le Duc; KOBAYASHI KENICHIRO
  Technical Report of the Japan Meteorological Agency, Number：134, First page：170, Last page：184, Feb. 2013, [Reviewed]
  Japan Meteorological Agency, Japanese, Research institution
• 台風１２号のメソアンサンブル予報実験　　　　　　　　　　　　　　　
  Origuchi Seiji; Saito Kazuo; KOBAYASHI KENICHIRO
  気象庁技術報告, Number：134, First page：184, Last page：194, 2013, [Reviewed]
  気象庁, Japanese, Research institution
• Evaluation of water retention capacity and flood control function of the forest catchment　　　　　　　　　　　　　　　
  Nobuhiko Sawai; Kaoru Takara; Kenichiro Kobayashi
  Journal on Food, Agriculture and Society, Volume：1, Number：1, First page：13, Last page：22, 2013, [Reviewed]
  Federation of German Scientists (VDW), English, Scientific journal
• An Ensemble Flood Simulation for The Dam Preliminary Release Operation In Japan Using JMA-NHM Rainfall　　　　　　　　　　　　　　　
  Kenichiro Kobayashi; Shigenori Otsuka; Kazuo Saito
  PROCEEDINGS OF THE 35TH IAHR WORLD CONGRESS, VOLS III AND IV, Volume：CDROM, First page：10428, Last page：10437, 2013, [Reviewed]
  The paper deals with a study on a short-date ensemble flood forecasting specifically for usual small dam catchments in Japan. The numerical ensemble rainfalls simulated by the Japan Meteorological Agency - Nonhydrostatic Model (JMA-NHM) are used as the inputs to a rainfall-runoff model for predicting river discharge into a dam. The spatial resolution of the weather ensemble simulations by JMA-NHM is 2 km, thus it has a potential to be used for even small-scale Japanese dam catchments (less than 100km(2) area). The Kasahori dam catchment which size is approximately 70 km(2) is selected as the application site of the ensemble flood simulations since the dam catchment experienced a historically rare rainfall/flood event on July 2011. Firstly, the rainfall over the Kasahori dam catchment during the flood period is analyzed with the ground rainfall, JMA Radar-Composite and JMA Radar-AMeDAS analysis data. Then, a distributed rainfall-runoff model is applied to the Kasahori dam catchment. The runoff-model parameter is calibrated with the Radar-Composite rainfall. Afterwards, the ensemble rainfalls by the JMA-NHM are given to the runoff model. The ensemble inflow discharges to the Kasahori dam are compared with the observed inflow. As a result, a simulated discharge of 11 ensemble members succeeds in reproducing the Kasahori dam 1st peak inflow at the same level magnitude with the observation, though the simulated peak is 2 hours ahead of the observed peak. All the 11 ensemble discharges predict the values more than the flood discharge 140 m(3)/s, a threshold value to decide the preliminary release from the dam. The result indicates a good potential of the ensemble flood forecasting even for small dam catchments.
  TSINGHUA UNIV, English, International conference proceedings
  Web of Science ID：WOS:000370410304033
• Development of a Distributed Rainfall-Runoff/Flood Inundation Simulation and Economic Risk Assessment Model, Journal of Flood Risk Management　　　　　　　　　　　　　　　
  KOBAYASHI KENICHIRO; TAKARA KAORU
  Journal of Flood Risk Management, Volume：6, Number：2, First page：85, Last page：98, Aug. 2012, [Reviewed]
  Blackwell Publishing Ltd and The Chartered Institution of Water and Environmental Management (CIWEM), English, Scientific journal
• DEVELOPMENT OF A STANDARDIZED DISTRIBUTED RAINFALL-RUNOFF AND FLOOD INUNDATION MODEL APPLICABLE TO PROPERTY INSURANCE　　　　　　　　　　　　　　　
  Kenichiro KOBAYASHI; Kaoru TAKARA; Hajime SANO; Hiromichi TSUMORI; Katsuyoshi SEKII
  Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Volume：68, Number：4, First page：I_1069, Last page：I_1074, 2012, [Reviewed], [Lead]
  Japan Society of Civil Engineers, Scientific journal
  DOI：https://doi.org/10.2208/jscejhe.68.i_1069
  DOI ID：10.2208/jscejhe.68.i_1069, eISSN：2185-467X
• DEVELOPMENT OF AN INTEGRATED MODEL FOR RAINFALL-RUNOFF/FLOOD INUNDATION SIMULATION AND ECONOMIC LOSS ESTIMATNION FOCUSING ON SAYO TOWN, HYOGO, JAPAN　　　　　　　　　　　　　　　
  Kenichiro KOBAYASHI; Kaoru TAKARA; Yuichiro OKU
  Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Volume：67, Number：4, First page：I_949, Last page：I_954, 2011, [Reviewed], [Lead]
  Japan Society of Civil Engineers, Scientific journal
  DOI：https://doi.org/10.2208/jscejhe.67.i_949
  DOI ID：10.2208/jscejhe.67.i_949, eISSN：2185-467X
• Development of a Framework for the Flood Economic Risk Assessment Using Vector GIS Data
  Kenichiro Kobayashi; Kaoru Takara; Mitsugu Funada; Yukiko Takeuchi
  Journal of Disaster Research, Volume：5, Number：6, First page：657, Last page：665, Dec. 2010, [Reviewed], [Lead]
  This paper proposes a flood economic risk assessment framework using vector GIS data, expressing individual house and paddyfield, prepared by a municipal Japanese government. Flood inundation is first simulated with a structured grid, then the simulated flood inundation depth, expressed in grid cells, is assigned to vector data house and paddyfield polygons as attributes. Flood-damage ratios of houses and paddyfields are then calculated using relationships of the flood depth, duration, and damage ratio opened by the Japanese Ministry of Land, Infrastructure, Transport, and Tourisms (MLIT). Economic loss involving building and paddyfield damages due to flooding is then calculated by multiplying the damage ratio, evaluation price per area, and the asset area. The advantage of using such vector data is that it yields the area of each house and paddyfield precisely, which also realizes, on average, the precise economic loss estimation. As the results, the spatial distribution of economic loss on an individual house/paddyfield scale is also identified. Since vector data shows area characteristics, the framework proposed here is useful in communitybased flood management. A workshop presenting the framework showed that the system potentially induces workshop participants to consider community-based flood hazard management.
  Fuji Technology Press Ltd., Scientific journal
  DOI：https://doi.org/10.20965/jdr.2010.p0657
  DOI ID：10.20965/jdr.2010.p0657, ISSN：1881-2473, eISSN：1883-8030
• Global Application of a Nitrogen Export Estimation Method Considering Anthropogenic and Natural factors　　　　　　　　　　　　　　　
  He Bin; Yamashiki Yosuke; Kobayashi Kenichiro; Takara Kaoru; Oki Kazuo; Oki Taikan
  Proceeding of Annual Conference, Volume：23, First page：91, Last page：91, 2010
  THE JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES, Japanese
  DOI：https://doi.org/10.11520/jshwr.23.0.91.0
  DOI ID：10.11520/jshwr.23.0.91.0, CiNii Articles ID：130004628179
• 全球気候モデル出力を用いた日本域の100年確率日降水量の将来予測　　　　　　　　　　　　　　　
  小林健一郎; 寶 馨; 中北英一
  Volume：54, First page：223, Last page：228, 2010, [Reviewed], [Lead]
• 全球気候モデル出力と洪水及び経済被害推定モデルを用いた中小河川の水害リスクの将来変動に関する研究　　　　　　　　　　　　　　　
  Volume：16, First page：495, Last page：500, 2010, [Reviewed]
• 標本サイズと水文頻度解析　　　　　　　　　　　　　　　
  寶 馨; 小林健一郎
  Volume：53, First page：205, Last page：210, 2009, [Reviewed]
• 雨域の移動が流域の降雨流出・洪水氾濫過程に及ぼす影響 The Influence of the Moving Rainstorms on the Rainfall-Runoff and Flood Inundation Processes in a Catchment　　　　　　　　　　　　　　　
  KOBAYASHI Kenichiro; TAKARA Kaoru
  2009, [Reviewed]
  Japanese
• Development of a simulation–optimization model for multiphase systems in the subsurface: a challenge to real-world simulation–optimization
  Kenichiro Kobayashi; Reinhard Hinkelmann; Rainer Helmig
  Journal of Hydroinformatics, Volume：10, Number：2, First page：139, Last page：152, Mar. 2008, [Reviewed], [Lead]
  The main purpose of this paper is to demonstrate the capability of a new simulation–optimization model especially tailored to investigate the optimal management strategy of a closed coal mine in the Ruhr, Germany. This paper deals with the multiphase/multicomponent flow simulation; the optimization model (simulated annealing); the mesh generation function; the coupling of them; and the use of a parallel computer. Firstly, a mesh generation function is included in the total procedure for the modelling of complex system configurations often required when the real-world problem is dealt with. The multiphase/multicomponent flow simulator can simulate not only groundwater flow and a tracer in it but also the multiphase systems (e.g. gas–water, gas–water–NAPL system). Moreover, a parallelization strategy for the optimization procedure is proposed and implemented to overcome the enormous CPU time problem always tagged to real-world simulation–optimizations. This strategy succeeded in enhancing the efficiency of the overall procedure almost linearly by the number of the processors in a parallel computer. This model is then applied to study how to install the passive extraction wells for controlling the migration of methane continuously desorbed from coal seams inside the closed coal mine in the Ruhr, Germany. The general rule proposed as the result of the application is rather simple although it is considered very useful in many practices of coal mining operations. This paper briefly outlines the overall procedure.
  IWA Publishing, Scientific journal
  DOI：https://doi.org/10.2166/hydro.2008.013
  DOI ID：10.2166/hydro.2008.013, ISSN：1464-7141, eISSN：1465-1734
• PARAMETER ESTIMATION OF A DISTRIBUTED RAINFALL-RUNOFF MODEL BY A LEVENBERG-MARQUARDT OPTIMIZATION ALGORITHM　　　　　　　　　　　　　　　
  Kenichiro KOBAYASHI; Kaoru TAKARA; Yasuto TACHIKAWA
  PROCEEDINGS OF HYDRAULIC ENGINEERING, Volume：51, First page：409, Last page：414, 2007, [Reviewed], [Lead]
  An optimization technique consisting of a Levenberg-Marquardt algorithm is coupled with a distributed rainfall-runoff model. The purpose is to estimate the rainfall-runoff model parameters appropriate for the Yuragawa-river flood by Typhoon No.23 on 19-22 October 2004. The application exhibits that the simulation-optimization model can not only estimate the model parameters well but also quantify sta tistically the relations among the model, the observations and the parameters. This paper describes the usefulness of the relative composite parameter sensitivty (RCPS), the composite observation sensitivity (COS), and the parameter coefficient matrix.
  Japan Society of Civil Engineers, Scientific journal
  DOI：https://doi.org/10.2208/prohe.51.409
  DOI ID：10.2208/prohe.51.409, ISSN：0916-7374, eISSN：1884-9172, CiNii Articles ID：130003842479
• A NUMERICAL EXPERIMENT WITH TWO-PHASE AND TWO-PHASE/THREE-COMPONENT MODELS FOR THE METHANE MIGRATION IN THE SUBSURFACE AQUIFER　　　　　　　　　　　　　　　
  Kenichiro KOBAYASHI; Reinhard HINKELMANN; Rainer HELMIG; Kaoru TAKARA; Nobuyuki TAMAI
  Doboku Gakkai Ronbunshuu B, Volume：63, Number：2, First page：120, Last page：133, 2007, [Reviewed], [Lead]
  Japan Society of Civil Engineers, Scientific journal
  DOI：https://doi.org/10.2208/jscejb.63.120
  DOI ID：10.2208/jscejb.63.120, CiNii Articles ID：80018415665
• Analysis of the Yuragawa River flood by Typhhon No. 23 in October 2004 using distributed rainfall-runoff model　　　　　　　　　　　　　　　
  小林健一郎; 立川康人; 佐山敬洋; 寶 馨
  PROCEEDINGS OF HYDRAULIC ENGINEERING, Volume：50, First page：313, Last page：318, 2006, [Reviewed], [Lead]
  Japan Society of Civil Engineers, Japanese, Scientific journal
  DOI：https://doi.org/10.2208/prohe.50.313
  DOI ID：10.2208/prohe.50.313, ISSN：0916-7374, CiNii Articles ID：130003842286
• APPLICATION OF HYDROINFORMATIC METHODS AND TECHNIQUES FOR COMPLEX SYSTEMS - QUANTIFICATION OF METHANE-MIGRATION PROCESSES FROM ABANDONED COAL MINES　　　　　　　　　　　　　　　
  R. HINKELMANN; T. BREITING; K. KOBAYASHI; R. HELMIG; H. SHETA
  Hydroinformatics, First page：222, Last page：229, Jun. 2004, [Reviewed]
  WORLD SCIENTIFIC, In book
  DOI：https://doi.org/10.1142/9789812702838_0027
  DOI ID：10.1142/9789812702838_0027
• Comparison of Different Model Concepts for Gas-Water Processes in the Subsurface　　　　　　　　　　　　　　　
  Kobayashi,K; Hinkelmann,R; Helmig,R
  Proceedings of the XXX IAHR Congress, First page：661, Last page：668, 2003, [Reviewed], [Lead]
• 低水路および外郭堤防法線がともに蛇行し位相差を有する複断面蛇行流路内の流れ　　　　　　　　　　　　　　　
  小林健一郎; 玉井信行; Islam Tarekul
  Volume：44, First page：873, Last page：878, 2000, [Reviewed], [Lead]

• アンサンブル予報を用いた洪水のImpact Based Forecasting　　　　　　　　　　　　　　　
  大泉伝; 川畑拓矢; LE Duc; 小林健一郎; 斉藤和雄; 太田琢磨
  Number：123, 2023
  J-Global ID：202402214010245359
• Estimation of Possible Extreme Flood of Yodo River Basin using the output of Pseudo-Global Warming Simulation by Regional Weather Prediction Model　　　　　　　　　　　　　　　
  石川 裕彦; 小林 健一郎; 奥 勇一郎
  Volume：69, Number：10, First page：45, Last page：48, Oct. 2013
  Japanese
  ISSN：0287-9859, CiNii Articles ID：40019859537, CiNii Books ID：AN00041639
• A Deliberation of Extreme Flooding in Yodogawa River Catchment using the Outputs of Extreme Typhoon Experiment by Physical Downscaling　　　　　　　　　　　　　　　
  小林 健一郎; 奥 勇一郎; 寶 馨; 石川 裕彦; 竹見 哲也; 中北 英一
  Number：55, First page：9, Last page：14, 2011
  Japanese
  ISSN：0386-412X, CiNii Articles ID：120004945223, CiNii Books ID：AN00027784
• Simulating Potential Impacts of Climate Change on Sediment Production and Shallow Landslide in Western Japan　　　　　　　　　　　　　　　
  APIP; TAKARA Kaoru; KOBAYASHI Kenichiro; YAMASHIKI Yosuke; NAKAKITA Eiichi
  Number：55, First page：49, Last page：56, 2011
  English
  ISSN：0386-412X, CiNii Articles ID：120004945218, CiNii Books ID：AN00027784
• Statistical Analysis of Present and Future River Water Temperature in Cold Regions Using Downscaled GCMs Data　　　　　　　　　　　　　　　
  HE Bin; TAKARA Kaoru; YAMASHIKI Yosuke; KOBAYASHI Kenichiro; LUO Pingping
  Number：54, First page：103, Last page：111, 2010
  English
  ISSN：0386-412X, CiNii Articles ID：120003551123, CiNii Books ID：AN00027784
• Development of a Yodogawa River Distributed Rainfall-Runoff/Flood Inundation Simulation Model and its Application to Non-life Insurance　　　　　　　　　　　　　　　
  小林 健一郎; 寶 馨; 佐野 肇; 津守 博通; 関井 勝善
  Number：54, First page：129, Last page：135, 2010
  Japanese
  ISSN：0386-412X, CiNii Articles ID：120003551120, CiNii Books ID：AN00027784
• Paleo-hydrology and Paleo-flow Reconstruction in the Yodo River Basin　　　　　　　　　　　　　　　
  LUO Pingping; HE Bin; TAKARA Kaoru; APIP; NOVER Daniel; KOBAYASHI Kenichiro; YAMASHIKI Yosuke
  Number：54, First page：119, Last page：128, 2010
  English
  ISSN：0386-412X, CiNii Articles ID：120003551121, CiNii Books ID：AN00027784
• Development of an Integrated Rainfall-Runoff/Flood Inundation Simulation Model and the Economic Damage Estimation Framework due to the Flooding　　　　　　　　　　　　　　　
  小林 健一郎; 寶 馨
  Number：53, First page：7, Last page：14, 2009
  Japanese
  ISSN：0386-412X, CiNii Articles ID：120002515179, CiNii Books ID：AN00027784
• CONSIDERATION ON THE DIFFERENCE BETWEEN DYKE-BREAK AND OVERFLOW INUNDATION SIMULATIONS FOR MAKING A FLOOD HAZARD MAP　　　　　　　　　　　　　　　
  KOBAYASHI Kenichiro; TAKARA Kaoru
  Volume：13, Number：2, First page：917, Last page：918, 19 May 2008
  Japanese
  ISSN：1342-145X, CiNii Articles ID：10024406962, CiNii Books ID：AN10581224
• Economic Loss due to Crop Damages by Flood Inundation : an Integrated Flood Risk Assessment
  小林 健一郎; 寶 馨
  Number：52, First page：19, Last page：27, 2008
  Japanese
  CiNii Articles ID：40019857917
• 最適化手法による分布型降雨流出モデルのパラメータ推定　　　　　　　　　　　　　　　
  小林健一郎; 寶馨; 立川康人
  Volume：51, 2007
  ISSN：1880-8751, J-Global ID：200902204007147763
• Application of a Levenberg-Marquardt optimization algorithm to the parameter estimation of a distributed rainfall-runoff model　　　　　　　　　　　　　　　
  Kenichiro Kobayashi; Kaoru Takara
  Proceedings of the 6th international Conference on Calibration and Reliability in Groundwater Modelling, ModelCARE, Denmark pp.586-591, 2007, [Reviewed]
  English
• Analysis of the Yuragawa River Flood by Typhoon No. 23 in October 2004 Using a Distributed Rainfall-Runoff Model
  KOBAYASHI Kenichiro; TAKARA Kaoru; TACHIKAWA Yasuto
  Number：49, First page：155, Last page：162, 2005
  English
  CiNii Articles ID：40019847214

• 極端台風による兵庫県都賀川の流出・浸水予測 極端台風による兵庫県都賀川の流出・浸水予測　　　　　　　　　　　　　　　
  KOBAYASHI Kenichiro; OKU Yuichiro; KAWASAKI Ryo; FUJITA Ichiro
  水文水資源学会2016年度研究発表会, Sep. 2016, 水文水資源学会, [Domestic conference]
  Japanese, Oral presentation, 福島市
• マルチ温暖化シナリオに基づいた平成２５年台風１８号の擬似温暖化実験　　　　　　　　　　　　　　　
  能登谷拓; KOBAYASHI KENICHIRO; 奥勇一郎; 木村圭佑
  平成28年度土木学会全国大会 第71回年次学術講演会, 2016, [Domestic conference]
  Japanese, Oral presentation
• 分布型降雨流出・氾濫モデルを用いた神戸市京橋ポンプ場流域における浸水シミュレーション　　　　　　　　　　　　　　　
  Nishioka Seigo; Kobayashi Kenichiro; Fujita Ichiro; Kumano Genki
  平成27年度土木学会全国大会第70回年次学術講演会, Sep. 2015, 土木学会, [Domestic conference]
  Japanese, Oral presentation, 岡山大学
• 分布型降雨流出・氾濫モデルによるメコン川流域大規模洪水の再現　　　　　　　　　　　　　　　
  Inoue Shotoku; Kobayashi Kenichiro; Kotera Akihiko; Nagano Takanori
  平成27年度土木学会全国大会第70回年次学術講演会, Sep. 2015, 土木学会, [Domestic conference]
  Japanese, Oral presentation, 岡山大学
• メソ気象モデルを用いたT1318 による大雨の再現と海面水温温暖化数値実験　　　　　　　　　　　　　　　
  NOTOYA Taku; KOBAYASHI Kenichiro; OKU Yuichiro; KIMURA Keisuke
  土木学会関西支部, May 2014, [Domestic conference]
  Japanese, Oral presentation, 大阪産業大学
• 流出・氾濫モデルと避難モデルの統合による大阪市の広域避難に関する一考察　　　　　　　　　　　　　　　
  KOBAYASHI KENICHIRO
  水文水資源学会, Sep. 2013, [Domestic conference]
  Japanese, Poster presentation, 神戸大学
• Ensemble flood forecasting using spatially high resolution numerical rainfalls　　　　　　　　　　　　　　　
  KOBAYASHI KENICHIRO
  Conference on Computational Engineering and Science, Jun. 2013, [Domestic conference]
  Japanese, Oral presentation, 東京大学生産技術研究所
• Development of a Yodogawa River Distribute Rainfall-Runoff/Flood inundation model for flood risk management　　　　　　　　　　　　　　　
  KOBAYASHI KENICHIRO
  2nd International Conference on Water Resources, Nov. 2012, [International conference]
  English, Oral presentation, Bayview Hotel, Langkawi, Kedah, Malyasia
• NUMERICAL SIMULATION OF NIIGATA-FUKUSHIMA SEVERE RAINSTORM DISASTER IN JULY 2011　　　　　　　　　　　　　　　
  KOBAYASHI KENICHIRO
  Conference on Computational Engineering and Science, Jun. 2012, [Domestic conference]
  Japanese, Oral presentation

• Present
  数学演習
• Theories on River Catchment Planning, Kobe University
• Seminar for Creative Thinking I-b, Kobe University
• Seminar for Creative Thinking I-a, Kobe University
• Practice in Civil Engineering and Safety Guidance Ⅱ, Kobe University
• Practice in Civil Engineering and Safety Guidance Ⅰ, Kobe University
• Hydrology and GIS, Kobe University
• Hydrology, Kobe University
• Basic Hydraulics and Practice, Kobe University
• Basic Hydraulics, Kobe University

• Japan Society of Civil Engineers

• Development of flood prediction method using particle filter and gaussian process regression　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Apr. 2023 - Mar. 2026
  Japan, Meteorological Research Institute
  Grant amount(Total)：4290000, Direct funding：3300000, Indirect funding：990000
  Grant number：23K04052
• Basin flood control and enviromental management based on probabilistic information using innovative technology　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Apr. 2023 - Mar. 2026
  Saitama University (former Kobe University)
  Grant amount(Total)：4550000, Direct funding：3500000, Indirect funding：1050000
  Grant number：23K04044
• Research for optimal evacuation method based on probabilistic flood forecasting with enough lead time　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Apr. 2019 - Mar. 2022
  Kobe University, Principal investigator
  Grant amount(Total)：4420000, Direct funding：3400000, Indirect funding：1020000
  Grant number：19K04618
• 高分解能土砂災害警戒情報の確率的指標作成と活用に関する研究　　　　　　　　　　　　　　　
  Apr. 2016 - Mar. 2019
  Competitive research funding
• A Comprehensive Study on the Disaster due to the 2015 Kanto-Tohoku Torrential Rainfall　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Special Purposes, Grant-in-Aid for Special Purposes, Oct. 2015 - Mar. 2016
  TANAKA Shigenobu; NIINO Hiroshi, Kyoto University, Coinvestigator
  Grant amount(Total)：17000000, Direct funding：17000000
  Cumulonimbus clusters as many as 3150 were generated, and rainfall in longer durations exceeded the historical records at many points in the upper reaches of the Kinu River. The embankment of Kinu River breached, and the maximum inundation volume on the inundation area of which ground had been subsided was 38 million m3. Because of the direct damage to paddy field crops and the difficulty in draining flood water, the importance of considering sediment deposition was pointed out. The issuance of heavy rain emergency warning was effective in establishing task forces at municipalities, and the hotline to the municipalities from river administrators worked effectively for decision making. Since synthetic judgment of large to small river was required, sharing both realtime and forecast water level, importance of improving knowledge about flood disaster process of citizens along river was pointed out.
  Thus, the integrated browser for flood disaster timeline has been developed.
  Grant number：15H06923
• 最先端遠隔探査手法を用いた富士山周辺の水循環過程の解明と流域管理への応用　　　　　　　　　　　　　　　
  Apr. 2013 - Mar. 2016
  Competitive research funding
• International Networking Project to Cope with Natural Hazards on the Periphery of Bengal Bay　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), 01 Apr. 2009 - 31 Mar. 2014
  ANDO Kazuo, Kyoto University
  Grant amount(Total)：48100000, Direct funding：37000000, Indirect funding：11100000
  The project research implementation hubs have been set in Bangladesh Agricultural University and DUS of NGO in Bangladesh, Yezin Agricultural University, SEAMEO-CHAT and FREDA of NGO in Myanmar, Sherubtse College in Bhutan, Guahati University in India, Faculty of Agriculture, Laos National University in Laos PDR, and the CSEAS, Kyoto University in Japan. The international workshop and the participatory learning & action on Environment Changing, Sustainable Development were implemented by such a hub organizations in 2010 and 2013 in Bangladesh, in 2011 and 2012 in Myanmar, and 2013 in Bhutan. The international workshop for the final result of the project was held in January of 2014 in Yangon. As the out-come of the project, an action research model of " Practice-oriented Area Studies challenging the global issues with Asian Zaich(local communities) international collaboration in order to overcome the issues as natural hazards, de-population and abandoning farming as the global issues.
  Grant number：21251005
• 次世代型広域・領域洪水モデルの並列化とナウキャスト　　　　　　　　　　　　　　　
  Apr. 2012 - Mar. 2014
  Principal investigator
  Competitive research funding
• Development of a Distributed Rainfall-Runoff/Flood Inundation Model for the Catchment Flood Control　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), 2010 - 2011
  KOBAYASHI Kenichiro, Kyoto University, Principal investigator
  Grant amount(Total)：3900000, Direct funding：3000000, Indirect funding：900000
  The purpose of the research is to develop, what we call, the Distributed Rainfall-Runoff/Flood-Inundation(DRR/FI) model which can simulate the rainfall-runoff and dike-break/inland flood inundation processes in an integrated/seamless manner. Until now, many physically-based rainfall-runoff models have been developed in such a way that the surface flow is routed with 1D kinematic wave model by deciding the flow direction a-priori of the simulation. However, in the model concept here, the surface flow is simulated with 2D dynamic wave model based on a Shallow Water equation, which thus enables the simultaneous routing of the runoff and flood inundation processes. Likewise 1D dynamic wave model is used with regard to the river flow instead of a 1D kinematic wave model. Thus the DRR/FI model can reproduce the backwater effect at the river confluences and outlets to the lake/ocean. Specifically, the Sayogawa river catchment model, Hyogo Prefecture, Japan and Yodogawa river catchment model in the Kansai area are developed with DRR/FI. These results are presented in e. g. Journals of Japan Society of Civil Engineers(JSCE). The catchment size of the Yodogawa river model is 8240km2. The application of such model concept as DRR/FI for such a large river basin is seldom seen in Japan. The model can simulate the flood inundation depth anywhere in the catchment though it requests the local calibration. In other words, after the calibration the model can estimate the flood hazard and risk based on the hazard anywhere in the catchment. The risk includes the economic losses due to the flood. Moreover, the dam operation rules are also incorporated in the DRR/FI model, thus the flood control capacity of the dam can also be considered. As the DRR/FI model can consider the spatio-temporal distribution of the rainfall, e. g. the Radar-Composite, Radar-AMeDAS and pseudo climate change experiment rainfalls are given to the DRR/FI model and the simulated results are summarized in the Journal papers. The interface with the evacuation model is also developed.
  Grant number：22760370