The 2019 Mw 7.0 Banten, Indonesia, intraslab earthquake: investigation of the coseismic slip, tsunami modelling and Coulomb stress change
Abstract The 2019 Mw 7.0 Banten, Indonesia, earthquake occurred at a 49 km depth in a relatively unknown region, where the geological structure did not clearly show the fault. In this study, we use the Global Navigation Satellite System data to analyse the fault source of the earthquake. Following t...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-06-01
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| Series: | Geoenvironmental Disasters |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s40677-022-00215-4 |
| _version_ | 1818253112915263488 |
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| author | Endra Gunawan Widjo Kongko Munawar Kholil Bayu Triyogo Widyantoro Sri Widiyantoro Pepen Supendi Nuraini Rahma Hanifa Ira Mutiara Anjasmara Cecep Pratama Aditya Riadi Gusman |
| author_facet | Endra Gunawan Widjo Kongko Munawar Kholil Bayu Triyogo Widyantoro Sri Widiyantoro Pepen Supendi Nuraini Rahma Hanifa Ira Mutiara Anjasmara Cecep Pratama Aditya Riadi Gusman |
| author_sort | Endra Gunawan |
| collection | DOAJ |
| description | Abstract The 2019 Mw 7.0 Banten, Indonesia, earthquake occurred at a 49 km depth in a relatively unknown region, where the geological structure did not clearly show the fault. In this study, we use the Global Navigation Satellite System data to analyse the fault source of the earthquake. Following the earthquake’s focal mechanism, we modelled a total of four fault models using two possible fault strikes, with each of the fault strikes investigated for shallow top depth and deeper top depth. This study also utilises the tide gauge data to confirm the tsunami waveform, modelled using the estimated coseismic slip. We present evidence of the shallow rupture of the 2019 Mw 7.0 Banten, Indonesia, intraslab earthquake from an ENE-WSW fault direction. The tsunami modelling of a shallow top depth of an ENE-WSW fault direction is a better fit in predicting the tide gauge waveform. We also present evidence that the 2019 Banten intraslab earthquake generated very few aftershocks for a magnitude 7-class earthquake. The stress transfer of a shallow rupture ENE- WSW fault model was able to explain the relocated two weeks of aftershocks. |
| first_indexed | 2024-12-12T16:34:54Z |
| format | Article |
| id | doaj.art-982205c758ce4ce0b9e3edff6d82b0b7 |
| institution | Directory Open Access Journal |
| issn | 2197-8670 |
| language | English |
| last_indexed | 2024-12-12T16:34:54Z |
| publishDate | 2022-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Geoenvironmental Disasters |
| spelling | doaj.art-982205c758ce4ce0b9e3edff6d82b0b72022-12-22T00:18:41ZengSpringerOpenGeoenvironmental Disasters2197-86702022-06-019111210.1186/s40677-022-00215-4The 2019 Mw 7.0 Banten, Indonesia, intraslab earthquake: investigation of the coseismic slip, tsunami modelling and Coulomb stress changeEndra Gunawan0Widjo Kongko1Munawar Kholil2Bayu Triyogo Widyantoro3Sri Widiyantoro4Pepen Supendi5Nuraini Rahma Hanifa6Ira Mutiara Anjasmara7Cecep Pratama8Aditya Riadi Gusman9Global Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Bandung Institute of TechnologyLaboratory for Harbor Infrastructure and Coastal Dynamics Technology, National Research and Innovation AgencyGeospatial Information AgencyGeospatial Information AgencyGlobal Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Bandung Institute of TechnologyAgency for Meteorology, Climatology and GeophysicsResearch Center for Geological Disaster, National Research and Innovation AgencyDepartment of Geomatics Engineering, Sepuluh Nopember Institute of TechnologyDepartment of Geodetic Engineering, Gadjah Mada UniversityGNS ScienceAbstract The 2019 Mw 7.0 Banten, Indonesia, earthquake occurred at a 49 km depth in a relatively unknown region, where the geological structure did not clearly show the fault. In this study, we use the Global Navigation Satellite System data to analyse the fault source of the earthquake. Following the earthquake’s focal mechanism, we modelled a total of four fault models using two possible fault strikes, with each of the fault strikes investigated for shallow top depth and deeper top depth. This study also utilises the tide gauge data to confirm the tsunami waveform, modelled using the estimated coseismic slip. We present evidence of the shallow rupture of the 2019 Mw 7.0 Banten, Indonesia, intraslab earthquake from an ENE-WSW fault direction. The tsunami modelling of a shallow top depth of an ENE-WSW fault direction is a better fit in predicting the tide gauge waveform. We also present evidence that the 2019 Banten intraslab earthquake generated very few aftershocks for a magnitude 7-class earthquake. The stress transfer of a shallow rupture ENE- WSW fault model was able to explain the relocated two weeks of aftershocks.https://doi.org/10.1186/s40677-022-00215-4Coseismic slip2019 Banten intraslab earthquakeGNSSTsunamiAftershocksCoulomb stress change |
| spellingShingle | Endra Gunawan Widjo Kongko Munawar Kholil Bayu Triyogo Widyantoro Sri Widiyantoro Pepen Supendi Nuraini Rahma Hanifa Ira Mutiara Anjasmara Cecep Pratama Aditya Riadi Gusman The 2019 Mw 7.0 Banten, Indonesia, intraslab earthquake: investigation of the coseismic slip, tsunami modelling and Coulomb stress change Geoenvironmental Disasters Coseismic slip 2019 Banten intraslab earthquake GNSS Tsunami Aftershocks Coulomb stress change |
| title | The 2019 Mw 7.0 Banten, Indonesia, intraslab earthquake: investigation of the coseismic slip, tsunami modelling and Coulomb stress change |
| title_full | The 2019 Mw 7.0 Banten, Indonesia, intraslab earthquake: investigation of the coseismic slip, tsunami modelling and Coulomb stress change |
| title_fullStr | The 2019 Mw 7.0 Banten, Indonesia, intraslab earthquake: investigation of the coseismic slip, tsunami modelling and Coulomb stress change |
| title_full_unstemmed | The 2019 Mw 7.0 Banten, Indonesia, intraslab earthquake: investigation of the coseismic slip, tsunami modelling and Coulomb stress change |
| title_short | The 2019 Mw 7.0 Banten, Indonesia, intraslab earthquake: investigation of the coseismic slip, tsunami modelling and Coulomb stress change |
| title_sort | 2019 mw 7 0 banten indonesia intraslab earthquake investigation of the coseismic slip tsunami modelling and coulomb stress change |
| topic | Coseismic slip 2019 Banten intraslab earthquake GNSS Tsunami Aftershocks Coulomb stress change |
| url | https://doi.org/10.1186/s40677-022-00215-4 |
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