Characteristics of landslides induced by an earthquake from a hidden strike-slip active fault in the Cianjur Area of West Java
On November 21, 2022, the Cianjur area in West Java, Indonesia, experienced devastating landslides caused by a magnitude 5.6 earthquake, with the epicenter traced to a hidden active fault approximately 11 kilometers beneath the surface, known as the Cugenang Fault. This study investigates the post-d...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2023-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/84/e3sconf_aiwest-dr2023_01009.pdf |
| _version_ | 1797345509932793856 |
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| author | Gunawan Tejakusuma Iwan Prawiradisastra Firman Sugianti Khori Tohari Adrin Zakaria Zufialdi Trisnafiah Syakira Fitriani Riski Biwas Putra Dimas Pri Martireni Antonina Budiman Bayu |
| author_facet | Gunawan Tejakusuma Iwan Prawiradisastra Firman Sugianti Khori Tohari Adrin Zakaria Zufialdi Trisnafiah Syakira Fitriani Riski Biwas Putra Dimas Pri Martireni Antonina Budiman Bayu |
| author_sort | Gunawan Tejakusuma Iwan |
| collection | DOAJ |
| description | On November 21, 2022, the Cianjur area in West Java, Indonesia, experienced devastating landslides caused by a magnitude 5.6 earthquake, with the epicenter traced to a hidden active fault approximately 11 kilometers beneath the surface, known as the Cugenang Fault. This study investigates the post-disaster landslides and aims to discover the characteristics of the landslides triggered by this earthquake. The methodology involves literature review, lithology descriptions, landslide slip surface analysis, soil analysis, slope assessment, land cover and land use change examination, landslide orientation evaluation, and distance measurements to the earthquake's epicenter and the Cugenang fault. Drones aided spatial landslide analysis. The study highlights the strong link between intense shaking along the active fault and landslide occurrences. Due to lithological bedding control, these landslides all head southwest and are located 0.35 to 0.67 kilometres from the fault. The residual soil, highly weathered breccia, and possible tuff volcanic deposits, which act as a sliding plane, lie in a similar direction to the slope, creating a vulnerable setting for landslides. The morphology and exposures of the Sarampad and Rawacina landslides showed similar phenomena to liquefaction. Land use changes, including slope cutting without proper stabilization measures, contribute to landslides to a certain degree. |
| first_indexed | 2024-03-08T11:18:39Z |
| format | Article |
| id | doaj.art-a273b944024647ce84d16bf9755e16f5 |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-03-08T11:18:39Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-a273b944024647ce84d16bf9755e16f52024-01-26T10:27:53ZengEDP SciencesE3S Web of Conferences2267-12422023-01-014470100910.1051/e3sconf/202344701009e3sconf_aiwest-dr2023_01009Characteristics of landslides induced by an earthquake from a hidden strike-slip active fault in the Cianjur Area of West JavaGunawan Tejakusuma Iwan0Prawiradisastra Firman1Sugianti Khori2Tohari Adrin3Zakaria Zufialdi4Trisnafiah Syakira5Fitriani Riski6Biwas Putra Dimas7Pri Martireni Antonina8Budiman Bayu9Research Center for Geological Disaster, ORKM – BRINResearch Center for Geological Disaster, ORKM – BRINResearch Center for Geological Disaster, ORKM – BRINResearch Center for Geological Disaster, ORKM – BRINFaculty of Geological Engineering, Universitas PadjadjaranResearch Center for Geological Disaster, ORKM – BRINResearch Center for Electronics, OREI – BRINResearch Center for Electronics, OREI – BRINResearch Center for Geological Disaster, ORKM – BRINResearch Center for Mining Technology, ORNM – BRINOn November 21, 2022, the Cianjur area in West Java, Indonesia, experienced devastating landslides caused by a magnitude 5.6 earthquake, with the epicenter traced to a hidden active fault approximately 11 kilometers beneath the surface, known as the Cugenang Fault. This study investigates the post-disaster landslides and aims to discover the characteristics of the landslides triggered by this earthquake. The methodology involves literature review, lithology descriptions, landslide slip surface analysis, soil analysis, slope assessment, land cover and land use change examination, landslide orientation evaluation, and distance measurements to the earthquake's epicenter and the Cugenang fault. Drones aided spatial landslide analysis. The study highlights the strong link between intense shaking along the active fault and landslide occurrences. Due to lithological bedding control, these landslides all head southwest and are located 0.35 to 0.67 kilometres from the fault. The residual soil, highly weathered breccia, and possible tuff volcanic deposits, which act as a sliding plane, lie in a similar direction to the slope, creating a vulnerable setting for landslides. The morphology and exposures of the Sarampad and Rawacina landslides showed similar phenomena to liquefaction. Land use changes, including slope cutting without proper stabilization measures, contribute to landslides to a certain degree.https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/84/e3sconf_aiwest-dr2023_01009.pdf |
| spellingShingle | Gunawan Tejakusuma Iwan Prawiradisastra Firman Sugianti Khori Tohari Adrin Zakaria Zufialdi Trisnafiah Syakira Fitriani Riski Biwas Putra Dimas Pri Martireni Antonina Budiman Bayu Characteristics of landslides induced by an earthquake from a hidden strike-slip active fault in the Cianjur Area of West Java E3S Web of Conferences |
| title | Characteristics of landslides induced by an earthquake from a hidden strike-slip active fault in the Cianjur Area of West Java |
| title_full | Characteristics of landslides induced by an earthquake from a hidden strike-slip active fault in the Cianjur Area of West Java |
| title_fullStr | Characteristics of landslides induced by an earthquake from a hidden strike-slip active fault in the Cianjur Area of West Java |
| title_full_unstemmed | Characteristics of landslides induced by an earthquake from a hidden strike-slip active fault in the Cianjur Area of West Java |
| title_short | Characteristics of landslides induced by an earthquake from a hidden strike-slip active fault in the Cianjur Area of West Java |
| title_sort | characteristics of landslides induced by an earthquake from a hidden strike slip active fault in the cianjur area of west java |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/84/e3sconf_aiwest-dr2023_01009.pdf |
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