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Historically, flooding is the most common environmental hazard worldwide, and also one of the most threatening to communities. Hydrological modeling of large river catchments has become a challenging task for water resources engineers due to the complexity of collecting and handling both spatial ...


Amarnath, GirirajAlahacoon, NirangaGismalla, Y.Mohammed, Y.Sharma, Bharat R.Smakhtin, Vladimir U.[Increasing Early Warning Lead Time Through Improved Transboundary Flood Forecasting in the Gash River Basin, Horn of Africa]Increasing Early Warning Lead Time Through Improved Transboundary Flood Forecasting in the Gash River Basin, Horn of Africa

Critical information on a flood-affected area is needed in a short time frame to initiate rapid response operations and develop long-term flood management strategies. This study combined rainfall trend analysis using Asian Precipitation—Highly Resolved Observational Data Integration towards Evalu...


Alahacoon, NirangaMatheswaran, KarthikeyanPani, PeejushAmarnath, Giriraj[A decadal historical satellite data and rainfall trend analysis (2001–2016) for flood hazard mapping in Sri Lanka]A decadal historical satellite data and rainfall trend analysis (2001–2016) for flood hazard mapping in Sri Lanka
Amarnath, GirirajInada, YoshiakiGhosh, SurajitYakob, UmerAlahacoon, NirangaKota, HaradaInoue, RyosukeSchlaffer, S.[Earth observation technologies for flood-risk mapping, modeling and management. Training manual prepared for Capacity Building Workshop on Earth Observation Technologies for Flood-risk mapping, Modeling and Management, Peradeniya, Sri Lanka, 18-21 November 2014.]Earth observation technologies for flood-risk mapping, modeling and management. Training manual prepared for Capacity Building Workshop on Earth Observation Technologies for Flood-risk mapping, Modeling and Management, Peradeniya, Sri Lanka, 18-21 November 2014.

Sri Lanka is facing severe flood events during monsoon rainfall in each year all over the country. The rapid development of remote sensing and widely available satellite images can be used effectively to map the flood inundation in past years. This study is focused on the mapping of flood inundat...


Amarnath, GirirajAlahacoon, NirangaInada, Yoshiaki[Inundations in the Sri Lanka: monitoring and analysis from MODIS [Moderate Resolution Imaging Spectroradiometer] and ALOS [Advanced Land Observing Satellite] instrument]Inundations in the Sri Lanka: monitoring and analysis from MODIS [Moderate Resolution Imaging Spectroradiometer] and ALOS [Advanced Land Observing Satellite] instrument

Over last decades, we have witnessed an upward global trend in natural disaster occurrence. Hydrological and meteorological disasters are the main contributors to this pattern. In 2011, hydrological disaster, such as floods and wet mass movements, represented 52% of the overall disaster reported,...


Amarnath, GirirajRajah, AmeerAlahacoon, NirangaInada, YoshiakiInoue, R.Aggarwal, Pramod K.[Potential of satellite data in catastrophic flood risk mapping and assessment: case studies from Asia and Africa]Potential of satellite data in catastrophic flood risk mapping and assessment: case studies from Asia and Africa

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