Integration of Microtremor and PS-INSAR Analysis to Investigate the Susceptible Area in the Pronojiwo District (Indonesia) Following the 2021 East Java M6.1 Earthquake

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-07-05 DOI:10.4401/ag-9094

Harun Arrasyid, S. Suwarto, S. Maryanto, Sri Dwi Wuryani, D. R. Santoso, Aris Subagiyo

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Abstract

The East Java M = 6.1 Earthquake struck on April 10, 2021, at the bottom of the Indian Ocean, about 96 km south of Kepanjen District, Malang Regency, Indonesia. The neighbouring Pronojiwo District in Lumajang Regency suffered significant damages and loss of lives. The earthquake aftermath underscored the necessity of examining susceptibility factors in the Pronojiwo area for future mitigation efforts. This research focuses on assessing earthquake vulnerability in Pronojiwo District using two methodologies: microtremor analysis and PS-InSAR. Microtremor data were directly collected, while PS-InSAR data were acquired from the Sentinel-1 satellite and processed using the ranging from 0.579 × 10 to 24.840 × 10 s /cm, in Pronojiwo District, with notably higher values found in areas with Semeru deposits, characterized by soft sediments. PS-InSAR analysis indicates concentrated negative shifts in residential zones, signaling structural damage. Regions with elevated vulnerability index values and negative PS points are considered more prone to earthquakes and subsequent building damages.

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整合微震颤和 PS-INSAR 分析，调查 2021 年东爪哇 M6.1 级地震后印度尼西亚 Pronojiwo 地区的易感区域

2021 年 4 月 10 日，东爪哇 M = 6.1 级地震发生在印度洋海底，印度尼西亚玛琅行政区 Kepanjen 县以南约 96 公里处。邻近的卢马让摄政区（Lumajang Regency）普罗诺吉沃县（Pronojiwo District）遭受了严重破坏和人员伤亡。地震后果突出表明，有必要对普罗诺吉沃地区的地震易感因素进行研究，以便今后开展减灾工作。本研究主要采用两种方法评估普罗诺吉沃地区的地震脆弱性：微震颤分析和 PS-InSAR。Microtremor 数据是直接采集的，而 PS-InSAR 数据是从 Sentinel-1 卫星上获取的，并使用 0.579 × 10 到 24.840 × 10 s /cm 的范围对其进行处理。PS-InSAR 分析表明，居民区集中出现负偏移，表明结构受到破坏。脆弱性指数值较高且 PS 点为负值的地区被认为更容易发生地震，进而造成建筑物损坏。

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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.