نتایج جستجو برای: flood delineation

تعداد نتایج: 32267  

2000
Inge Sandholt

This study focuses on the use of Synthetic Aperture Radar (SAR) data for mapping the extent of flooding events. A small test area in the middle Senegal River valley in the western part of Sahel is studied. Four ERS2 SAR PRI scenes have been used in the analysis for delineation of flooded areas. Change images have been produced by using the latest non-flood image (August 1999) as reference and d...

2013
J. F. Breilh

This study aims to assess the performance of raster-based flood modeling methods on a wide diversity of coastal marshes. These methods are applied to the flooding associated with the storm Xynthia, which severely hit the western coast of France in February 2010. Static and semi-dynamic methods are assessed using a combination of LiDAR data, post-storm delineation of flooded areas and sea levels...

Journal: :Remote Sensing 2012
Thomas R. Allen

Coastal lagoons mix inflowing freshwater and tidal marine waters in complex spatial patterns. This project sought to detect and measure temperature and spatial variability of flood tides for a constricted coastal lagoon using multitemporal remote sensing. Advanced Spaceborne Thermal Emission Radiometer (ASTER) thermal infrared data provided estimates of surface temperature for delineation of re...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2013
João P Leitão Maria do Céu Almeida Nuno E Simões André Martins

Pluvial or surface flooding can cause significant damage and disruption as it often affects highly urbanised areas. Therefore it is essential to accurately identify consequences and assess the risks associated with such phenomena. The aim of this study is to present the results and investigate the applicability of a qualitative flood risk assessment methodology in urban areas. This methodology ...

Journal: :Water 2023

The accurate delineation of flood hazard maps is a key element risk management policy. Flood inundation models are fundamental for reproducing the boundaries flood-prone areas, but their calibration limited to information available on areas affected by during observed events (typically fragmentary photo, video or partial surveys). In recent years, Earth Observation data have supported monitorin...

Journal: :Nucleation and Atmospheric Aerosols 2022

On January 2019, the biggest flood in last decade struck Gowa and Makassar. The claimed enormous number of victims caused severe damage to many buildings; this can be anticipated by Flood Routing. This study aims analyze hydrograph, propagation time, determine inundation model during downstream Bili-Bili reservoir. research was conducted through three phases: delineation watershed using ArcGis ...

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