منابع مشابه
Flood Hazard Assessment Using Panchromatic Satellite Imagery
Panchromatic (PAN) satellite imagery has been used successfully in different applications such as topographic mapping and terrain modelling. Nevertheless, PAN imagery is still one of the less used digital sources for land-change studies except few processes where the high-resolution of the PAN images is used to improve the visualization quality of the multi-spectral images. This research aimed ...
متن کاملPanchromatic Satellite Image Classification for Flood Hazard Assessment
The study aims to investigate the use of panchromatic (PAN) satellite image data for flood hazard assessment with an aid of various digital image processing techniques. Two SPOT PAN satellite images covering part of the Nile River in Egypt were used to delineate the flood extent during the years 1997 and 1998 (before and after a high flood). Three classification techniques, including the contex...
متن کاملA Mathematical Model for Flood Protection
Many regions in the world are protected against flooding by a dike, which may be either natural or artificial. We deal with a model for finding the optimal heights of such a dike in the future. It minimizes the sum of the investments costs for upgrading the dike in the future and the expected costs due to flooding. The model is highly nonlinear, nonconvex, and infinite-dimensional. Despite this...
متن کاملSpatial Models for Flood Risk Assessment
The problem of computing risk measures associated to flood events is extremely important not only from the point of view of civil protection systems but also because of the necessity for the municipalities of insuring against the damages. In this work we propose, in the framework of an integrated strategy, an operating solution which merges in a conditional approach the information usually avai...
متن کاملFlood hazard risk assessment model based on random forest
http://dx.doi.org/10.1016/j.jhydrol.2015.06.008 0022-1694/ 2015 Elsevier B.V. All rights reserved. ⇑ Corresponding author at: Department of Water Resource and Environment, Geography and Planning School of Sun Yat-Sen University, Guangzhou 510275, China. Tel.: +86 013763316315. E-mail address: [email protected] (C. Lai). Zhaoli Wang , Chengguang Lai a,b,c,⇑, Xiaohong Chen , Bing Yang , S...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Safety and Security Engineering
سال: 2011
ISSN: 2041-9031,2041-904X
DOI: 10.2495/safe-v1-n4-353-362