Effects of rainfall pattern classification methods on the probability estimation of typhoon-induced debris-flow occurrence

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS

ACS Applied Bio Materials Pub Date : 2024-05-23 DOI:10.2166/hydro.2024.286

Zhixu Bai, Youjian Yang, Lin Guo, Leman Lin

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引用次数: 0

Abstract

The frequent occurrence of typhoons causes geological disasters, such as debris flow and landslide, by bringing extreme rainfall events. Due to the lack of data collection on extreme rainfall events caused by typhoons, the relationship between rainfall patterns and debris flow has not been deeply studied. Therefore, based on hourly rainfall data during typhoons in Wenzhou from 1980 to 2017, this study used a variety of methods to classify the rainfall events and analyze the characteristics of typhoon-induced rainfall events and their impacts on the probability of debris-flow occurrence. Three classification techniques, including dynamic time warping, K-Means cluster, and self-organizing maps, are applied with two ways to normalize rainfall records, including dimensionless rainfall density curves and dimensionless rainfall cumulation curves, for extracting rainfall patterns from recorded 1 h rainfall data. The rainfall patterns are then used for the estimation of typhoon-induced debris-flow occurrence probability. Results show that different methods present different rainfall patterns. The probability of debris flows varies with different patterns of rainfall events. The research results help deepen the understanding of typhoon rainfall events and debris-flow disaster prevention in the region and contribute to regional flood control and disaster reduction.

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降雨模式分类方法对台风诱发泥石流发生概率估算的影响

台风的频繁发生会带来极端降雨事件，从而引发泥石流和滑坡等地质灾害。由于缺乏对台风造成的极端降雨事件的数据收集，降雨模式与泥石流之间的关系尚未得到深入研究。因此，本研究基于1980年至2017年温州台风期间的小时降雨数据，采用多种方法对降雨事件进行分类，分析台风诱发降雨事件的特征及其对泥石流发生概率的影响。采用动态时间扭曲、K-Means聚类和自组织图等三种分类技术，并采用无量纲降雨密度曲线和无量纲降雨累积曲线等两种降雨记录归一化方法，从记录的1 h降雨数据中提取降雨模式。然后利用降雨模式估算台风诱发泥石流的发生概率。结果表明，不同的方法呈现出不同的降雨模式。泥石流发生概率随降雨事件的不同模式而变化。该研究成果有助于加深对台风降雨事件和该地区泥石流灾害预防的理解，为地区防洪减灾做出贡献。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Applied Bio Materials Chemistry-Chemistry (all)

CiteScore

9.40

自引率

2.10%

发文量

464

期刊介绍： ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.