研究者詳細 - 中村　晋一郎

論文 - 中村　晋一郎

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Improvement of socio-hydrological model to capture the dynamics of combined river and urban floods: a case study in Lower Kelani River Basin, Sri Lanka 査読有り

Perera Chamal, Nakamura Shinichiro

HYDROLOGICAL RESEARCH LETTERS 16 巻 ( 2 ) 頁： 40 - 46 2022年4月

防災及び維持管理を考慮した「ため池」の統合的評価指標 −愛媛県西条市を対象として− 査読有り

辻岡義康, 中村晋一郎, 木村匡臣, 乃田啓吾, 西原是良, 田中智大, 渡部哲史

35 巻 ( 2 ) 頁： 122 - 133 2022年3月

A cross-country analysis of behavioral changes in response to COVID-19 social distancing policies

Hiroyoshi Morita, Tsuyoshi Takano, Shinichiro Nakamura, Yoshitsugu Hayashi

Transportation Amid Pandemics: Lessons Learned from COVID-19 頁： 225 - 232 2022年1月

掲載種別：論文集(書籍)内論文

As the COVID-19 pandemic spreads globally, many countries now resort to social distancing policies. However, its effectiveness varies from country to country, and the factors responsible for such variations are not yet known. In this study, we conducted a cross-country analysis of behavioral changes that accompany social distancing policies using Google Community Mobility Reports and Apple’s Mobility Trend Reports. The results revealed that (1) the impact of social distancing policies on people’s behavior varies completely across countries and time periods, even with the same policy stringency, and (2) not only strong behavioral regulations but also income compensation, information provision, and vaccination policies affect behavior. Moreover, considering that long-term behavioral regulations seriously affect people’s physical and mental health and communities, policymakers must well combine direct regulations and indirect policies.

DOI： 10.1016/B978-0-323-99770-6.00014-4

Scopus

The impacts of COVID-19 and social distancing policies on social capital in Japan

Hiroyoshi Morita, Tsuyoshi Takano, Shinichiro Nakamura, Yoshitsugu Hayashi

Transportation Amid Pandemics: Lessons Learned from COVID-19 頁： 233 - 246 2022年1月

掲載種別：論文集(書籍)内論文

We analyze changes in lifestyle, income, and social capital with COVID-19 and social distancing policy, based on a questionnaire survey conducted in Japan during 2020 from a perspective of Ethical, Legal and Social Implications (ELSI). The results of the survey show that (1) the personal impact of social distancing policy varies greatly depending on their socioeconomic situation; (2) lifestyle and income changes can have a significant impact on people’s immediate living standard and state of mind; and (3) throughout the COVID-19 pandemic, social capital in the close social unit has been strengthened, but the pandemic has tended to reduce trust and solidarity in society as a whole. In order to lessen such impacts, it is important for national and local governments to provide more careful support and also to actively demonstrate accountability in policy implementation. In addition, we suggest that it is important to foster community trust on a daily basis and make the best possible use of public support.

DOI： 10.1016/B978-0-323-99770-6.00004-1

Scopus

COMMUNITIES’ DISASTER PREPAREDNESS PROMOTED EVACUATION: A CASE STUDY OF NAGANO CITY DAMAGED BY THE CHIKUMA RIVER FLOODS CAUSED BY TYPHOON HAGIBIS 査読有り

Fuko Nakai, Shinichiro Nakamura, Kensuke Takenouchi

Journal of Japan Society of Civil Engineers 10 巻 ( 1 ) 頁： 56 - 69 2022年

掲載種別：研究論文（学術雑誌）

This study examined the evacuation behavior of two communities—Naganuma and Toyono—in Nagano City, Japan, during typhoon Hagibis. Only two casualties were reported, despite the large size of the inundated area and significant building damage. We analyzed the relationship between (1) the numerical statement of aggregated evacuation behavior, (2) social and hazard circumstances, and (3) the social background, including disaster preparedness plans formulated by the community. The study focused on “the details” of evacuation promotion factors revealed by previous research, rather than “the existence or absence” of such factors. Data were collected from newspaper articles, a post-interview survey conducted by Kansai Television Co. Ltd., minutes from the flood control meetings in the flooded area, and district disaster management plans. The results revealed that the main factors promoting evacuation action differed for the two communities due to their disaster preparedness styles. While Naganuma established a specific (a particular measurement of the water level of the Chikuma River) and socially agreed-upon criterion for evacuation, Toyono had experienced several inland flooding events. It was found that both communities participated in the flood control meetings, formed organizations for voluntary disaster mitigation action, and cultivated common awareness regarding “the sign of a dangerous situation” and “what information is important for evacuation.”

DOI： 10.2208/JOURNALOFJSCE.10.1_56

Scopus

ANALYSIS ON FLOOD DAMAGES IN URBANIZATION CONTROL AREA: A CASE STUDY OF DAMAGES BY TYPHOON HAGIBIS IN NAGANUMA DISTRICT, NAGANO CITY, JAPAN 査読有り

Naoya Shibata, Yuma Masuda, Hiroyoshi Morita, Shinichiro Nakamura

Journal of Japan Society of Civil Engineers 10 巻 ( 1 ) 頁： 45 - 55 2022年

担当区分：最終著者,　責任著者掲載種別：研究論文（学術雑誌）

Land use regulation is a fundamental measure of flood mitigation and climate change adaptation for reducing the amount of exposure in floodplains. In Japan, land use regulation for flood mitigation has been considered in the classification area under the City Planning Act and the Location Normalization Plan under the Act on Special Measures Concerning Urban Reconstruction. However, mitigation effects and operational challenges have not been fully elucidated. In this study, we analyzed the characteristics of flood damage in the urbanization control area in Naganuma District of Nagano City, which was severely damaged by the Chikuma River levee break triggered by Typhoon Hagibis in 2019. The analysis, which adopted building point data, determined that land use regulation by area classification played a role in reducing damage in the area. However, at the community level, it was confirmed that more buildings were located in areas with high flood hazards owing to the development of new houses and businesses associated with the development of infrastructure.

DOI： 10.2208/JOURNALOFJSCE.10.1_45

Scopus

Integrated Evaluation of Changing Water Resources in an Active Ecotourism Area: The Case of Puerto Princesa City, Palawan, Philippines 査読有り

Dela Cruz Mark Ace, Nakamura Shinichiro, Hanasaki Naota, Boulange Julien

SUSTAINABILITY 13 巻 ( 9 ) 頁： 4826 - 4826 2021年4月

A review of climate-change impact and adaptation studies for the water sector in Thailand 招待有り査読有り国際共著

Kiguchi Masashi, Takata Kumiko, Hanasaki Naota, Archevarahuprok Boonlert, Champathong Adisorn, Ikoma Eiji, Jaikaeo Chaiporn, Kaewrueng Sudsaisin, Kanae Shinjiro, Kazama So, Kuraji Koichiro, Matsumoto Kyoko, Nakamura Shinichiro, Nguyen-Le Dzung, Noda Keigo, Piamsa-Nga Napaporn, Raksapatcharawong Mongkol, Rangsiwanichpong Prem, Ritphring Sompratana, Shirakawa Hiroaki, Somphong Chatuphorn, Srisutham Mallika, Suanburi Desell, Suanpaga Weerakaset, Tebakari Taichi, Trisurat Yongyut, Udo Keiko, Wongsa Sanit, Yamada Tomohito, Yoshida Koshi, Kiatiwat Thanya, Oki Taikan

ENVIRONMENTAL RESEARCH LETTERS 16 巻 ( 2 ) 頁： 023004 - 023004 2021年2月

明治期から戦後にかけての日本における長期水害データベースの構築査読有り

伊藤悠一郎, 中村晋一郎

土木学会論文集Ｂ１（水工学） 77 巻 ( 1 ) 頁： 74 - 83 2021年

担当区分：最終著者記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：公益社団法人土木学会

水害への対策を検討したり，将来の水害被害を予測するうえで重要となるのが水害被害を記録した長期統計である．日本の水害被害を扱う記録としては1961年より行われている水害統計調査があるが，それ以前の水害の規模や発生地域，発生要因等を把握する長期統計は存在しない．そこで，本研究では，地方気象台等が作成した水害記録を用いて，日本における水害統計調査開始以前の水害データベースを構築した．本データベースは水害統計調査が開始される以前の日本全国の水害被害を記録した最も詳細且つ長期の水害統計である．この水害データベースを分析した結果，これまで記録の無かった1941年から1945年にも1930年代と同等の水害が発生していたこと，水害イベントの発生頻度及び強度は 1950年以降明瞭に増加する傾向が示された．

DOI： 10.2208/jscejhe.77.1_74

事前の防災活動による避難の促進：令和元年東日本台風千曲川決壊における長野市の事例査読有り

中居楓子, 中村晋一郎, 竹之内健介

土木学会論文集B1(水工学) 76 巻 ( 1 ) 頁： 424 - 436 2020年

市街化調整区域における浸水被害の分析－令和元年東日本台風による長野市長沼地区の被害を例として－査読有り

柴田直弥, 増田有真, 森田紘圭, 中村晋一郎

土木学会論文集B1(水工学) 76 巻 ( 1 ) 頁： 202 - 211 2020年

事前の防災活動による避難の促進：令和元年東日本台風千曲川決壊における長野市の事例査読有り

中居楓子, 中村晋一郎, 竹之内健介

土木学会論文集Ｂ１（水工学） 76 巻 ( 1 ) 頁： 424 - 436 2020年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：公益社団法人土木学会

本研究では，令和元年東日本台風による千曲川の洪水氾濫で被害を受けた長野市長沼と豊野の2地区を対象に，避難促進／抑制要因として知られる「事前の防災活動」と「被災経験」の質的な内容に着目し，避難行動との関連を明らかにした．文献調査と関西テレビ報道センターのヒアリング調査の結果から，避難に影響を与えた要因には両地区で差があり，その差の背景として，長沼は避難を判断する具体的な基準を決めていたこと，豊野は複数の水害経験と治水対策への参加により内水氾濫への理解を形成してきたことがわかった．また，両地区共に組織の中で「普段と違う状況とはどういう状況か」への共通認識を形成し，それを実際の行動に移すレベルまで計画を落とし込んでいたという共通点があった．

DOI： 10.2208/jscejhe.76.1_424

市街化調整区域における浸水被害の分析－令和元年東日本台風による長野市長沼地区の被害を例として－査読有り

柴田直弥, 増田有真, 森田紘圭, 中村晋一郎

土木学会論文集Ｂ１（水工学） 76 巻 ( 1 ) 頁： 202 - 211 2020年

担当区分：最終著者記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：公益社団法人土木学会

土地利用規制は，氾濫原内の暴露量そのものを低減させる根本的な水害対策の一つであるが，その実際の軽減効果や運用的な課題については十分に明らかになっていない．本研究では，令和元年東日本台風による千曲川堤防の決壊によって深刻な被害が発生した長野県長野市長沼地区を対象に市街化調整区域における浸水被害の特徴を建物立地の変遷や治水地形の関係から分析を行い，日本における規制誘導の課題について考察を行った．建物ポイントデータを用いた分析により，区域区分による開発抑制の水害リスク拡大防止の役割が確認されたが，開発許可制度による集落内での住家の新築や用途地域の指定や社会インフラの整備に伴う事業所等の開発によって，浸水リスクの高いエリアへの建物の進出もあり，運用上の課題も示された．

DOI： 10.2208/jscejhe.76.1_202

Study of adaptation measures to climate change on urban area in Bangkok, Thailand

Thidarat Komkong, Sanit Wongsa, Shinichiro Nakamura

22nd Congress of the International Association for Hydro-Environment Engineering and Research-Asia Pacific Division, IAHR-APD 2020: "Creating Resilience to Water-Related Challenges" 2020年

掲載種別：研究論文（国際会議プロシーディングス）

In urban areas especially Bangkok, Thailand at risk from sea-level rise and heat waves, storms, and floods whose frequency and/or intensity climate change is likely to increase. This article aims to study the adaptation measures to climate change for reducing the impact of floods from heavy rainfall cause in urban areas. Through an in-depth case study of the impact of the flood (depth, area, duration) under the current drainage system and the designed drainage system in the future including under the adaptation measures to reduce the impact of flood such as sponge city, retention pond within urban areas by using iRIC (Nays2D Flood) model. It is used to simulate a flood event that occurred at this site and adapted to simulate under heavy rainfall caused by climate change. The procedure is commencing by studying the existing drainage system. The calibration, and validation of the parameter which effects on simulation model such as, a runoff coefficient, a coefficient of Manning's n. From the results, we are realized the existing drainage system could not achieve the design rainfall. Case of the present, flooding in the study areas, depth of flood 15-20 centimeters, and duration about 1-3 hours. Under projected climate change scenarios, the results of flood depths, duration and areas are increased from the present condition more than 1.0 - 3.0 times in the study area. From the adaptation measure cases, it will also reduce the impact of flooding from climate change conditions about 1.0 - 2.0 times in the study areas.

Scopus

Urban Flooding and Adaptation to Climate Change in Sukhumvit Area, Bangkok, Thailand

Wongsa Sanit, Vichiensan Varameth, Piamsa-nga Napaporn, Nakamura Shinichiro

NEW TRENDS IN URBAN DRAINAGE MODELLING, UDM 2018 頁： 644 - 648 2019年