One of the main factors of water erosion is the natural characteristics of the soil called "erodibility" or"detachability". The present study aims to analyze the variations of soil erodibility factor in different plains and thefactors related to it. Erodibility is one the key factors in some models of erosion and sediment such as Universal SoilLoss Equation (USLE), Revised USLE (RUSLE), and Mod...

The 2020 Elliot Creek landslide-tsunami-flood cascade originated from an 18.3 Mm 3 rock slope failure in quartz diorite bedrock a valley undergoing rapid glacial retreat. We used airborne LiDAR and optical imagery to characterize the its surroundings. Using LiDAR, we determined that two rockslides (2020 older undated one) occurred on this shared common basal rupture surface. mapped main sets of...

Airborne light detection and ranging (LiDAR) data were acquired over the coastal city of Christchurch, New Zealand, prior to and throughout the 2010 to 2011 Canterbury Earthquake Sequence. Differencing of preand post-earthquake LiDAR data reveals land surface and waterway deformation due to seismic shaking and tectonic displacements above blind faults. Shaking caused floodplain subsidence in ex...

Changes in mean earlywood vessel areas in mature Quercus macrocarpa were analyzed to determine possible sources of bias in paleoflood records derived from anatomical tree -ring signatures. Tree -ring cores were collected at intervals along the vertical axis of four Q. macrocarpa in a flood -prone stand near the Red River in Manitoba. The WinCELL PRO image analysis system was used to measure mea...

Title of Document: VARIABILITY OF THE GREAT PLAINS LOW-LEVEL JET: LARGE SCALE CIRCULATION CONTEXT AND HYDROCLIMATE IMPACTS Scott J. Weaver, Doctor of Philosophy, 2007 Directed By: Professor Sumant Nigam, Department of Atmospheric and Oceanic Science Variability of the Great Plains Low-Level Jet (GPLLJ) is analyzed from the perspective of larger-scale, lower-frequency influences and regional hyd...

[1] This paper investigates the potential of low‐cost spaceborne data to approximate longitudinal surface profiles during flood events on large rivers. In February 2000, the Shuttle Radar Topography Mission (SRTM) measured the elevation of most of the Earth’s surface with spatially continuous sampling and an absolute vertical accuracy between 5.6 and 9 m. The vertical error has been shown to ch...

This paper addresses the problem of integrating a data ontology, exactly describing the database schema of the British national mapping agency, with an application ontology, whose purpose is to identify instances of the concept “Flood Defence”, a term not explicit in the data. We outline some of the compromises necessary to map from a closed-world data model to the openworld OWL-DL data ontolog...

In recent years, there has been considerable speculation about the possible effects of climate change on migration, especially in developing countries. Stern (2006) noted that 200 million people worldwide live in at-risk coastal flood plains, which would be threatened by changes in sea-level. Moreover climate change may lead to resource scarcity, drought, floods, and other environmental changes...

Climate change could exacerbate floods on agricultural plains by increasing the frequency of extreme and adverse meteorological events. Flood extent maps be a valuable source information for land decision makers, risk management emergency planning. We propose method that combines various types data processing techniques in order to achieve accurate flood maps. The application aims find percenta...