百年一遇的洪水——一切都是偶然

R. R. Holmes, Karen Dinicola
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引用次数: 49

摘要

洪水是指在河流的任何河段超过天然或人工堤岸的任何相对较高的水流。洪水的发生有很多原因,比如大面积的持续降雨,局部强烈的雷暴降雨,或者伴随或不伴随降雨的大积雪的迅速融化。因为洪水是由许多不同的情况引起的,并不是所有的洪水在规模、持续时间或影响上都是相同的。将洪水置于环境中,可以使社会解决诸如生命和财产风险等问题,并研究和了解洪水对环境的好处。“百年一遇的洪水”这样的说法是在试图将洪水置于语境框架中产生的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
100-Year Flood-It's All About Chance
A flood is any relatively high streamflow overtopping the natural or artificial banks in any reach of a stream. Floods occur for many reasons, such as long-lasting rainfall over a broad area, locally intense thunderstormgenerated rainfall, or rapid melting of a large snow pack with or without accompanying rainfall. Because floods result from many different circumstances, not all floods are equal in magnitude, duration, or effect. Placing floods in context allows society to address such issues as the risk to life and property, and to study and understand the environmental benefits of floods. Trying to place contextual framework around floods is where such terms as “100-year flood” came into being.
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