文章基本信息

标题：Alternative Index for Measuring Flood Risk and Its Application in Gombe Metropolis, Nigeria
本地全文：下载
作者：Saidu Idris ; Lal Merving Dharmasiri
期刊名称：Journal of Geography, Environment and Earth Science International
印刷版ISSN：2454-7352
出版年度：2016
卷号：7
期号：3
页码：1-10
DOI：10.9734/JGEESI/2016/28623
语种：English
出版社：Sciencedomain International
摘要：Aim: There is no doubt that the world is now under a serious threat from the environmental hazards due to the fact that the frequency and intensity of hydrological hazards such as floods have been increasing in recent years. Flood risk is a probability of loss which depends on three elements or concepts, namely 1) hazard, 2) vulnerability, and 3) exposure. A clear understanding and distinction between the three elements that create risk- hazard, exposure and vulnerability - gives the necessary information for factoring in most flood-related aspects. This paper focuses on developing a new method for measuring flood risk using the main indicators for geophysical exposure of the risk (percent built-up density, proximity to floodplains and elevation). The new method was afterward applied to study flood risk in Gombe Metropolis using Remote Sensing and GIS so as to achieve the set objectives.
关键词：Flood risk;Gombe metropolis;building density;proximity to floodplains