SUSCEPTIBILITY ASSESSMENT OF EARTHQUAKE-INDUCED LANDSLIDES: THE 2018 PALU, SULAWESI MW 7.5 EARTHQUAKE, INDONESIA

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-01-01 DOI:10.17794/rgn.2023.3.4

Yukni Arifianti, P. Pamela, P. Iqbal, S. Sumaryono, A. Omang, H. Lestiana

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引用次数: 1

Abstract

A catastrophic Palu earthquake on September 28th, 2018 with Mw 7.5 triggered countless slope failures, generating numerous landslides. This paper presents a practical method for susceptibility assessment of earthquake-induced landslides in the Palu region and the surrounding area. The statistical weight of evidence (WoE) model was used to assess the relationship between landslides induced by seismic motion and its causative factors to determine the susceptibility level and derive an earthquake-induced landslide susceptibility map of this study area. The 1273 landslides were classified into two data series, training data for modelling (70%) and test data for validation (30%). The six selected thematic maps as landslide causative factors are lithology, land use, peak ground acceleration (PGA), and slope (gradient, aspect, elevation). The selection of causative factors considerably influences the frequency of landslides in the area. The result is satisfactory because the AUC value of the chosen model excelled the minimum limit, which is 0.6 (60%). The estimated success rate of the model is 85.7%, which shows that the relevancy of the model is good with the occurrence of landslides. The prediction rate of 84.6% indicates that the applied model is very good at predicting new landslides.

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地震诱发滑坡的易感性评估:2018年印度尼西亚苏拉威西岛帕卢7.5级地震

2018年9月28日，帕卢发生了里氏7.5级的灾难性地震，引发了无数次滑坡。本文提出了一种实用的帕卢地区及周边地区地震诱发滑坡易感性评价方法。采用统计证据权(WoE)模型对地震诱发滑坡与其成因之间的关系进行评价，确定地震诱发滑坡的易感性等级，并绘制研究区地震诱发滑坡易感性图。将1273个滑坡分为两个数据序列，用于建模的训练数据(70%)和用于验证的测试数据(30%)。选定的6个专题图为滑坡成因，分别是岩性、土地利用、峰值地面加速度(PGA)和坡度(坡度、坡向、高程)。诱发因素的选择对该地区滑坡的发生频率有很大影响。所选模型的AUC值超过了0.6(60%)的最小限值，结果令人满意。模型的估计成功率为85.7%，表明模型与滑坡发生的相关性较好。预测率为84.6%，表明所应用的模型对新的滑坡具有较好的预测能力。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.