River floods frequently occur when tropical cyclones hit land. Nonetheless, systematic, long-term discharge data remain rather scarce in many countries, which prevent proper analysis of peak discharges occurring during floods. The Térraba catchment is the biggest and most dynamic Costa Rica. In this study, we developed regional flood-frequency analyses combining tree-ring based estimation measu...

Predicting runoff producing areas and their corresponding risks of generating storm runoff is important for developing watershed management strategies to mitigate non-point source pollution. However, few methods for making these predictions have been proposed, especially operational approaches that would be useful in areas where variable source area (VSA) hydrology dominates storm runoff. The o...

Soil moisture is an important component of the hydrological cycle. In the framework of modern flood warning systems, the knowledge of soil moisture is crucial, due to the influence on the soil response in terms of infiltrationrunoff. Precipitation-runoff processes, in fact, are related to catchment’s hydrological conditions before the precipitation. Thus, an estimation of these conditions is of...

This study analyzes multi-temporal LiDAR data of high accuracy and high resolution by installing a geomorphometric model for extracting landslides. First, two sets of LiDAR data were acquired for before and after a heavy rainfall event. The landslides which took place from 2005 to 2009 were classified automatically by satellite images, and subsequently the landslides were interpreted and edited...

The Mw 7.8 Gorkha earthquake of 25 April 2015 triggered thousands of landslides in the central part of the Nepal Himalayas. The main goal of this study was to generate an ensemble-based map of co-seismic landslide susceptibility in Sindhupalchowk District using model comparison and combination strands. A total of 2194 co-seismic landslides were identified and were randomly split into 1536 (~70%...

The presence of impermeable surfaces in urban areas hinders natural drainage and directs the surface runoff to storm systems with finite capacity, which makes these prone pluvial flooding. occurrence flooding depends on existence minimal for generation concentration. Detailed hydrologic hydrodynamic simulations are computationally expensive require intensive resources. This study compared evalu...

[1] Lateral water flow in catchments can produce important patterns in water and nutrient fluxes and stores and also influences the long-term spatial development of forest ecosystems. Specifically, patterns of vegetation type and density along hydrologic flow paths can represent a signal of the redistribution of water and nitrogen mediated by lateral hydrologic flow. This study explores the use...

Tai is a family of related languages and dialects, a subgroup of the Tai-Kadai languages, spoken by more than 85 million speakers in southern China and Southeast Asia. This paper uses GIS to map the spatial distribution of Tai toponyms (Muang, Chiang and Viang) and analyzes their relationship with terrain characteristics. In Tai, Muang means flat ‘‘basin’’, Chiang means ‘‘town’’, and Viang prov...