Traditional methods to evaluate flood risk generally focus on heavy storm events as the principal cause of flooding. Conversely, fault tree analysis is a technique that aims at modelling all potential causes of flooding. It quantifies both overall flood probability and relative contributions of individual causes of flooding. This paper presents a fault model for urban flooding and an applicatio...

Abstract Loess Plateau provides a broad growing environment for crops. However, due to the loose soil, soil erosion is serious. Gully Consolidation and Highland Protection key work in construction of ecological civilization Plateau. Using method simulating Protection, terrain conditions are changed, hydrological model used simulate change before after ditch head landfill. In this paper, Yangjia...

Gully erosion susceptibility (GES) maps are essential for managing land resources and control. Choosing the optimal horizontal resolution in GES mapping is a challenge. In this study, complex loess hilly area on Chinese Loess Plateau was tested using two machine learning algorithms. Unmanned aerial vehicle (UAV) images with 9 cm GNSS RTK field-measured data were employed as base datasets, 11 fa...

The topographic threshold is based on the power relationship between area and slope widely applied in gully-erosion research; however, this requires further testing. Accordingly, Alamarvdasht Lamerd Fadagh Larestan regions Fars Province, Iran, were selected as case studies to explore for gullies. Thirty active gullies identified each study during field surveys, data describing land use cover, d...

Ephemeral gully (EG) erosion has an important impact on agricultural soil losses and increases field surface hydrology connectivity transport of pollutants to nearby water bodies. Watershed models including EG component are scarce not yet properly evaluated. The objective this study is evaluate the capacity one such tool, AnnAGNPS, simulate evolution two formed in a conservation tillage system....

Gully rehabilitation is often applied as part of catchment management strategies aimed at reducing downstream sediment yields. However, the influences gully control measures on runoff and transport processes in agroforestry systems have been seldom studied. In this paper, a thorough analysis these was carried out valley-bottom located dehesa from SW Spain. The monitored before after implementat...

A population of northern bottlenose whales (Hyperoodon ampullatus) uses the Gully, a submarine canyon off coast Nova Scotia, Canada. Eleven years photo-identification records has permitted estimation size using mark-recapture techniques. The estimate was small (133 individuals, 95% CI = 111-166 from left side identifications; 127 106-160 right identifications). not closed, with combined mortali...