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Water disaster risk research lab
東北大学災害科学国際研究所
Water is the most abundant substance on the earth, the principal constituent of all living things, and a major force constantly shaping the surface of the earth. It is also a key factor in air-conditioning the earth for human existence and in influencing the progress of civilization. Changes in the distribution, circulation, or temperature of the earth’s waters can have far-reaching effects, and these changes may be caused by human activities, in particular, since the latter half of the 20th century. Therefore, I aim to understand this water cycle and its change, and solve the world's water issues.
水の循環は、自然現象として時間的・空間的に偏在しており、また人間活動によって変化します．これらによる地球・地域・流域スケールの水循環の変化は、水需給バランスの不均衡による水不足や水域汚染と水生生態系の悪化、渇水や豪雨など水災害ポテンシャルの増大につながります．そこで、この水の循環を理解して、世界の水問題を解決することを目指しています．
Staff/Study
Daisuke Komori
小森 大輔
Daisuke Komori
小森 大輔
Specially Appointed Professor
Water is the most abundant substance on the earth, the principal constituent of all living things, and a major force constantly shaping the surface of the earth. It is also a key factor in air-conditioning the earth for human existence and in influencing the progress of civilization. Changes in the distribution, circulation, or temperature of the earth’s waters can have far-reaching effects; the ice ages, for instance, were a manifestation of such effects. Changes may be caused by human activities, in particular, since the latter half of the 20th century. People cultivate the soil, irrigate crops, fertilize the land, clear forests, pump groundwater, build dams, dump wastes into rivers and lakes, and do many other constructive or destructive things that affect the circulation and quality of water in nature. Besides, an expanding population and a rapidly growing economy especially in Asia and Africa are hindering sustainability on the globe.
Our studies and challenges have been focused on solving the world water issuers by understanding water circulation, along with the following subjects: (1) Impact assessment on the hydrological change under the changing climate and the land use change at a global and local scale; (2) Mechanism of slope failure and wood debris by torrential rains; (3) Socio-hydrology: trade-offs between urban flood resilience and urbanisation; (4) Numerical study on water pollution in the inundation areas; (5) Long-term heat, vapour and carbon dioxide fluxes observation for an impact assessment on the interaction between land and atmosphere.
Furthermore, the following inter-/trans-disciplinary research has been focused on achieving local sustainability: (6) Understanding requirements for sustainability of community-based programs; (7) Value-based co-creation of technology and lifestyle for a society based on a virtuous materials cycle.
Amalia Nafisah Rahmani Irawan
Amalia Nafisah Rahmani Irawan
Assistant Professor
Climate change is intensifying hydro-meteorological extremes such as droughts, floods, and heatwaves, creating complex challenges for disaster risk reduction and sustainable development. My research focuses on understanding these evolving hazards and their interactions with human systems, particularly in vulnerable and rapidly developing regions.
In particular, I have been working on disaster risk assessments under a changing climate, with a primary focus on agricultural drought, as well as flood and heatwave hazards. My approach combines observed data with satellite-based and remote sensing datasets to enable high-resolution spatial and temporal analyses. This integration allows for assessments at the community level, where the impacts of climate extremes are most acutely felt, and where adaptation measures must be effectively targeted.
By integrating hazard characterization, exposure mapping, and vulnerability analysis, my work aims to identify risk hotspots and provide scientific evidence to support adaptation and disaster risk reduction strategies. Through this research, I seek to contribute to the development of methodologies and insights that can bridge the gap between large-scale climate information and local-scale decision-making.
Member/Thesis
[Lab Members]
[Lab Members]
<Laboratory Staff>
Research Fellow: Eishin Hata
Administrative Assistants: Chizuko Itoga
[Doctoral course students]
D3
- Muthiah Sadidah (Indonesia) : Sociohydrology (Flood)D2
- Gu Zhaolong (China) : Sociohydrology (Flood)D1
- Liu Yunhao (China) : Disaster Science (Landslides and Large Wood Debris)
- Pamela (Indonesia) : Disaster Science (Landslides)
[Master course students]
M1
- Rizka Qurrota’aina (Indonesia): Disaster Science (Debri flows)
- Viengkhamsone Latdavanh (Laos) : Social Science (Community-based activity)
Members and research topics in 2024
Members and research topics in 2024
Komori Laboratory
[Doctoral dessertation]
Amalia Nafisah Rahmani Irawan (Indonesia): Drought Vulnerability in Indonesian Rice Farmer Communities: A Comparative Study of Dam and Community-based Water Resources
Sartsin Phakdimek (Thailand): Development of Integrated Approach for Shallow and Deep-Seated Landslide Assessments Triggered by Extreme Rainfall Events
[Master's thesis]
Gu Zhaolong (China): Understanding tradeoff between flood risk and urbanization: Case study in Chiang Mai, Thailand
Liu Yunhao (China): Physical understanding of model parameters in large wood discharge model
Members and research topics in 2023
Members and research topics in 2023
Komori Laboratory
[Doctoral dessertation]
Mohammad Naser Sediqi (Afganistan): Integrated Assessment of Climate Change Impact on Drought Severity, Water Sustainability, and Agriculture Potential in Afghanistan
[Master's thesis]
Muthiah Sadidah (Indonesia): Modeling the Socio-Hydrological Dynamics between Flood Hazard and Society in Citarum Watershed, Indonesia
阿部祐太: 日本全域の山地流域における流木流出モデルの適用／Application of the large wood export model at moutainous watersheds in Japan
立川凌平: 内水氾濫頻発区域における地域社会と内水氾濫の相互作用の解析／Analysis of the Interaction between Local Communities and Urban Pluvial Flooding in Frequent Urban Pluvial Flooding Areas
Members and research topics in 2022
Members and research topics in 2022
Komori Laboratory
[Doctoral dessertation]
Vempi Satriya (Indonesia): Global crop vulnerability to drought and various climate extremes and the possible factors
[Master's thesis]
小柳津唯花: 和歌山市における内水氾濫頻発区域の分布特性とその動態解析／Distribution Characteristics and Dynamic Analysis of frequent pluvial flooding areas in Wakayama City, Japan
中村雅志: 日本のダム流域における流木災害リスク評価／RISK ASSESSMENT OF LARGE WOOD-RELATED HAZARDS AT DAM RESERVOIR CATCHMENTS IN JAPAN
[Bachelor's thesis]
井下雄揮: 中国四川省における斜面崩壊モデルの適用
只木想太: 社会水文学モデリングによる大阪市の内水氾濫と人間活動の相互作用の理解
Members and research topics in 2021
Members and research topics in 2021
Komori Laboratory
[Master's thesis]
Amalia Nafisah Rahmani Irawan (Indonesia): Correlation Analysis of Agricultural Drought Risk on Wet Crop and Meteorological Drought Index in Tropical Humid Region
[Bachelor's thesis]
阿部祐太: 阿武隈川水系における流木流出特性の解明
立川凌平: 名古屋市における内水氾濫頻発区域の分布とその特性
Members and research topics in 2020
Members and research topics in 2020
Komori Laboratory
[Master's thesis]
Meng Linghao (China): Assessing the impact of vegetation restoration on natural water cycle - A case study of Northeast China
Erwan Wahyu Wibowo (Indonesia): How wealthy level and participation of community based on environmental activities affect on environmental awareness? A Case study of waster banks in Pati Regency
横山光: 日本のダム流域における流木流出特性の評価／EVALUATION OF THE CHARACTERISTICS OF LARGE WOOD EXPORT AT THE WATERSHED SCALE IN JAPAN
[Bachelor's thesis]
小柳津唯花: 都市化に伴う内水氾濫発生要因の変化
中村雅志: 流木流出プロセスの把握
Members and research topics in 2019
Members and research topics in 2019
Komori Laboratory
[Doctoral dessertation]
Chatuphorn Somphong (Thailand): Adaptation to future sandy beach loss due to sea level rise by consideration of turism benefit
[Master's thesis]
Vempi Satriya (Indonesia): Understanding Flood Impact Characteristic on Agricultural Crop Yield
Sopha Soliya (Laos): Adoption of Innovation and its Diffusion among Grape Farmers – a Case Study: Takahata City, Yamagata Prefecture, Japan
猪俣亮介: 内水氾濫頻発区域におけるリスク変遷の要因解析
市塲昭裕: 日本全国を対象としたダムにおける流木量と斜面崩壊の相関の分析
[Bachelor's thesis]
古谷龍一: 乱流フラックス観測からの植物由来フラックス抽出方法の開発
Members and research topics in 2018
Members and research topics in 2018
Komori Laboratory
[Doctoral dessertation]
Thapthai Chaithong (Thailand): Recruitment and Entrainment Processes of Woody Debris Cused by Disastrous Landslides and Debris Flows
[Master's thesis]
Danila Aleksandrovich Podobed (Russia): Understanding the differences in permeation of soil water under tree grass cover
Eilif Kurnia Deda Djamres (Indonesia): Understanding the characteristic of frequent rainfall inundation areas in Tangerang City
Rini Purwanti (Indonesia): Effectiveness of local people's perception on ecotourism participation in Bromo Tengger Semeru National Park, Indonesia
坂井七海: 乱流フラックス観測と蒸散モデルを用いた植物生理応答の解明
中口幸太: 日本の都市における内水氾濫頻発区域の分布特性
平山博信: 名取川水系における神社空間の洪水脆弱性の分析
杉井健太郎: 東北地方の霧の頻発地点の抽出と特性解析
包賀年 (China): Impact of land use change and flood inundation area -A case study in the Ping River Basin, Thailand
[Bachelor's thesis]
横山光: 九州北部地域における流木流出特性の解明
Members and research topics in 2017
Members and research topics in 2017
Komori Laboratory
[Doctoral dessertation]
Prem Rangsiwanichpong (Thailand): Modeling Landslide and Erosion as Sediment Sources to Assess Cost and Benefit of Sedimentation
Nurul Fajar Jaruriyadi (Indonesia): Evaluation of Adaptation Measures for Flood Risk under Future Scenarios Using an Integrated Hydrodynamic-economic Model
[Master's thesis]
Christ Bangun Dwi Samekto (Indonesia): Understanding requirements for satisfaction of Community -Based Settlement Reconstruction Program
助川友斗: タンクモデルを用いた平成28年台風10号における流木流出メカニズムの解明
[Bachelor's thesis]
猪股亮介: 大阪市の都市部と郊外部における降水の空間偏差とその経年変化の実態
Members and research topics in 2016
Members and research topics in 2016
Komori Laboratory
[Master's thesis]
Diah Pamulasari Suyanto (Indonesia): How Farmer’s Incentive Affect Success of Community Based Bioenergy Program
Gunawan Makkawaru Salihun (Indonesia): Understanding Requirements for Sustainability of Community-based Environment Sanitation Program
Ananya Sritawan (Thailand): The impact of heterogeneous surface on turbulence characteristic of surface boundary layer
Pharakonkham Sengphrachanh (Laos): Proposing the flood risk index in view of forest and climate change
佐藤郁: カンボジアメコン河流域における地表水中ヒ素濃度推定モデルの構築とその影響評価
青山恭尚: 河川遡上津波に伴う地形変化が河川環境に与える影響の評価
金子祐人: 津波の海岸堤防越流に伴う地形変化とその背後域への影響
[Bachelor's thesis]
近将史: 不均一地表面における熱・水・CO2フラックスの動態解析
坂井七海: 植生が接地境界層内のCO2フラックスに及ぼす影響
Members and research topics in 2015
Members and research topics in 2015
Komori Laboratory
[Master's thesis]
小山峻平: 乱流フラックスの不確実性の定量化によるデータ品質評価
[Bachelor's thesis]
助川友斗: 日本全国の流木流出量の評価
中口幸太: 大都市における内水氾濫頻発区域の分布とその特性
How to join our team?／国際防災戦略イニシアティブ研究室に興味がある研究者・学生はこちら。
Current open positions
Note: We currently don’t have funding for additional Postdoc and PhD positions. However, we can welcome Postdoc if you have a fellowship. Students must have a scholarship or be self-funded. We are happy to support you after you apply to our group.
Application to Postdoc position
If you want to join us as a posdoc, please email us first. Also, we can chat about the possibility of applying to a fellowship:
For international postdoc: You can apply to the JSPS International Fellowship. Please contact to us at least two months before the JSPS deadline of JSPS.
For Japanese postdoc: Please consider applying to JSPS Postdoctoral Fellowship. Please contact to us in advance if you are applying for the fellowship.
Application to PhD and Master courses
If you are interested in working with us as a PhD or master student, please consider apply to the Graduate School of Environmental Studies (GSES), Tohoku University.
International Student Program at Graduate School of Environmental Studies
If you are non-Japanese and living outside in Japan, please apply to the international scholarship program of GSES through IESLP (International Environmental Security Leadership Program). The information on applicable scholarships and application timings are shown in the IESLP webpage.
Entrance exam to Graduate School of Environmental Studies
If you are Japanese (or Foreigner living in Japan), please take entrance exam of Graduate School of Environmental Studies, Tohoku University. The entrance exam is held in late February and August every year.
Info in Japanese
国際防災戦略イニシアティブ究室に修士/博士学生として加わりたい場合は、東北大学大学院環境科学研究科 環境・地理群の 大学院入試を受験 してください。研究室見学は随時受け付けています。
JSPS特別研究員のホストは常時受け付けています。興味がある場合は連絡お願いします。
Contact/Links
Contact/Links
Contact Info
468-1, Aoba, Aramaki, Aoba-ku, Sendai, Miyagi, 980-0845, JAPAN
daisuke.komori.e8 [at] tohoku.ac.jp
Links
東北大学／Tohoku University
https://www.tohoku.ac.jp/japanese/東北大学グリーン未来創造機構／Green Goals Initiative
https://www.ggi.tohoku.ac.jp/東北大学大学院環境科学研究科／Graduate School of Environmental Studies
https://www.kankyo.tohoku.ac.jp/東北大学災害科学国際研究所／International Research Institute of Disaster Science (IRIDeS)
https://irides.tohoku.ac.jp/
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