揭示洪水灾害的复杂性:全面审查特征和风险评估

Adib Jafar, Nordin Sakke, M. T. Mapa, Ramli Dollah, Abdul Khair Beddu Asis, Mokhtar Jaafar, Frankie Marcus Ata, Azlan Abas
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引用次数: 0

摘要

了解洪水灾害的特征至关重要,因为它是确定损失风险水平的基本指标之一。对灾害要素的解释往往内涵各异,尤其是洪水灾害。事实上,在不同的研究中,衡量洪灾危害程度的特征和尺度也各不相同。因此,本文旨在通过回顾以往的研究,了解洪水灾害的特征及其对损失风险等级的影响。一般来说,洪水灾害等级可根据某些特征来确定,如水深、流速、持续时间、排水量、洪流力、洪水强度和能量头。根据这些特征,洪水灾害等级可分为三至四级:低、中、高;或低、中、高、特大。例如,从深度方面来看,高度小于 0.5 米和大于 1.5 米的洪水分别被划分为低和高危害等级。从频率来看,每年发生少于 6 次的洪水被视为低危害等级,而每年发生超过 11 次的洪水则被列为极度危害等级。一个地区的洪水灾害等级越高,损失风险就越大。因此,了解洪水灾害的特征将有助于确定或评估任何特定地区的损失风险。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Unravelling the Complexity of Flood Hazards: A Comprehensive Review of Characteristics and Risk Assessment
Understanding the characteristics of flood hazards is crucial since it is one of the basic indicators for determining the risk of loss level. The elements of a hazard are often interpreted with varying connotations, especially flood hazards. In fact, the characteristics and scales that measure a flood hazard level also vary from one study to another. Therefore, the aim of this paper is to understand the characteristics of flood hazards and their influence on the risk of loss level by reviewing previous research. Generally, the flood hazard level can be determined according to certain characteristics, such as depth, velocity, duration, amount of discharge, flood flow force, flood intensity and energy head. Based on these characteristics, the flood hazard level can be classified into three or four levels: low, medium, high; or low, medium, high and extreme. From the aspect of depth, for example, floods with a height less than 0.5 meters and more than 1.5 meters are categorised as low and high hazard levels, respectively. In terms of frequency, floods that occur less than 6 times a year are considered as low hazard level, while those that occur more than 11 times a year are classified as extremely hazardous. The higher the flood hazard level in an area, the greater the risk of loss. Therefore, understanding the characteristics of a flood hazard will aid in determining or assessing the risk of loss in any particular area.
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