| Autor: |
Divyesh Rohit, Hemanta Hazarika, Tsubasa Maeda, Wa Ode Sumartini, Takaji Kokusho, Siavash Manafi Khajeh Pasha, Sukiman Nurdin |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Progress in Earth and Planetary Science, Vol 8, Iss 1, Pp 1-20 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2197-4284 |
| DOI: |
10.1186/s40645-021-00452-5 |
| Popis: |
Abstract The Sulawesi earthquake with a moment magnitude of M w 7.5 struck the Central Sulawesi region of the Sulawesi Island, Indonesia, on September 28, 2018. The epicenter of the earthquake was located in the mountainous region of Donggala Regency, in the neck of the Minahasa Peninsula in the Central Sulawesi Province of Indonesia. Although the epicenter was located in Donggala Regency, the greatest devastating effects were observed about 70 km south of the epicenter in the Palu Valley. The event was the first of its kind to cause large-scale flowslides simultaneously at four key locations such as Balaroa, Petobo, Jono Oge, and Sibalaya with extensive ground displacements ranging from several hundred meters to more than 1 km. This article reviews the field observations of geotechnical failures and infrastructure damage caused by liquefaction resulting from the shallow strike-slip earthquake at Palu City, Donggala Regency, and Sigi Regency. A geo-spatial analysis was performed on data collected from aerial drone imagery, along with portable dynamic cone penetration testing (PDCPT) in the field. The investigation revealed a highly stratified ground with alternating soil layers of varying permeability and very low bearing resistance at shallow depths. The investigation also helped in assessing the extent of damage caused by geotechnical failure to the residential infrastructures, irrigation structures, and roads. Graphical Abstract |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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