A5064605531- Hydrology and Watershed Management Studies
- Flood Risk Assessment and Management
- Hydrology and Drought Analysis
- Water resources management and optimization
- Disaster Management and Resilience
- Climate variability and models
- Precipitation Measurement and Analysis
- Hydrological Forecasting Using AI
- Meteorological Phenomena and Simulations
- Reservoir Engineering and Simulation Methods
- Groundwater flow and contamination studies
- Soil erosion and sediment transport
- Water-Energy-Food Nexus Studies
- Soil and Unsaturated Flow
- Cryospheric studies and observations
- Infrastructure Resilience and Vulnerability Analysis
- Hydrology and Sediment Transport Processes
- Tropical and Extratropical Cyclones Research
- Soil and Water Nutrient Dynamics
- Plant Water Relations and Carbon Dynamics
- Urban Stormwater Management Solutions
- Transboundary Water Resource Management
- Environmental and Agricultural Sciences
- Climate change and permafrost
- Water Quality and Pollution Assessment
University of Yamanashi
2006-2025
University of the Philippines Visayas
2024
Public Works Research Institute
2009-2022
Takeda (Japan)
2003-2022
National Graduate Institute for Policy Studies
2015-2022
UNESCO
2015
Khulna University
2015
Japan Agency for Marine-Earth Science and Technology
2005
Japan Society of Civil Engineers
1974-2000
Japan Society
1988
Abstract The hydrological response to climate change in the Tarim River Basin was investigated by analysing hydrological, temperature and precipitation data of past 50 years. long‐term trend time‐series, including air temperature, precipitation, streamflow, examined using both parametric non‐parametric techniques plausible association between streamflow method grey correlation analysis. results show that study area became warmer last few decades. experienced a significant monotonic increase...
Abstract. The intensity, duration, and geographic extent of floods in Bangladesh mostly depend on the combined influences three river systems, Ganges, Brahmaputra Meghna (GBM). In addition, climate change is likely to have significant effects hydrology water resources GBM basin may ultimately lead more serious Bangladesh. However, assessment impacts basin-scale by using well-calibrated hydrologic modeling has seldom been conducted due lack observed data for calibration validation. this...
Abstract In the last decade, there have been many destructive floods in various parts of world. Despite extensive investment flood control works, neither occurrences nor damages are decreasing. A possible consequence climate change is an increased frequency extreme meteorological events that may cause floods. Discussion offered some recent large world and experiences combating Japan. Floods over time as societies change. There no single universal remedy against site-specific local efforts...
Abstract For the sustainable management of water quantity and quality, a hydrological model that can simulate hydro-environmental dynamics river basins at arbitrary locations is valuable. There are several streamflow simulation models suitable for such purpose. Yet lack data commonly poses serious problem their application. This encountered resources basin scale. paper describes combination TOPMODEL with Muskingum-Cunge flow routing method to overcome least partially. The resultant...
Abstract Analysis of future Japan Meteorological Agency atmospheric general circulation model (JMA AGCM) based climate scenarios for the Mekong River basin (MRB) indicates that annual mean precipitation will increase in 21st century (2080–2099) by 4·2% averaged across basin, with majority this occurring over northern MRB (i.e. China). Annual temperatures are also projected to approximately 2·6 °C (averaged MRB). As expected, these changes lead significant hydrology MRB. All subbasins...
Despite sincere efforts by concerned agencies and recent improvements in hazard warnings, thousands of at-risk people did not evacuate during Aila, a category-I tropical cyclone that struck southwestern coastal Bangladesh 2009. This study investigated the responses affected Aila to warnings associated evacuation orders, unveiled behavioural aspects explain why they or comply with orders. Utilising primary data collected from 420 households living severely sub-district Koyra, located Khulna...
Flood management is an important topic worldwide. Precipitation the most crucial factor in reducing flood-related risks and damages. However, its adequate quality sufficient quantity are not met many parts of world. Currently, near real-time satellite precipitation products (NRT SPPs) have great potential to supplement gauge rainfall. NRT SPPs several biases that require corrections before application. As a result, this study investigated two statistical bias correction methods with...
ABSTRACT People's vulnerability to disasters depends largely on their social and physical aspects, such as economic disadvantages mobility constraints related age. Those characteristics will influence how individuals experience the disaster recover. Thus, assessing vulnerable population's location exposure hazards floods is important for designing risk reduction policies. This study conducts an analysis considering five disadvantage dimensions: age, gender, race, socioeconomic status,...
Abstract Topography is a dominant factor in hillslope hydrology. TOPMODEL, which uses topographical index derived from simplified steady state assumption of mass balance and empirical equations motion over hillslope, has many advantages this respect. Its use been demonstrated small basins (catchment areas the order 2–500 km 2 ) but not large 10 000–100 000 ). The objective paper to introduce Block‐wise TOPMODEL (BTOP) as an extension concept grid based framework for distributed hydrological...
Abstract This study investigates the Mekong River basin hydrology for 1980–2000 period using a grid‐based distributed hydrological model called Yamanashi Hydrological Model (YHyM). The performance of is evaluated data observed at different locations and results justify physical soundness model. seasonal variations climatic characteristics such as soil moisture, ground water saturation deficit, runoff, precipitation, evapotranspiration, etc. are analysed. On basis simulated results, it...
This flood hazard study is the first step towards linking global and local scales of risk assessment under International Flood Initiative ( IFI ) Flagship Project. To simulate river discharges, we utilised a 600‐arcsec grid block‐wise TOP BTOP model to represent scale constructed 15‐arcsec for Rhine River basin. Both models showed similar statistical performances with observed daily flows, especially 1993 1995 floods. For both scales, calculated peak discharges using Gumbel distribution...