Strain accumulation in the Mentawai Forearc Sliver, Indonesia, inferred from continuous GNSS-derived strain rate
The Mentawai Forearc Sliver (MFS) is characterized by oblique deformation formed as slip partitioned between normal and parallel trench plate convergence. The surge of great earthquakes from 2004 to 2012 along the adjacent Sunda trench left a large unbroken segment known as the Mentawai Seismic Gap....
Saved in:
| Main Authors: | , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2025-01-01
|
| Series: | Geodesy and Geodynamics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674984724000363 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841544039888846848 |
|---|---|
| author | Leni Sophia Heliani Cecep Pratama Adi Wibowo David Prambudi Sahara Susilo Susilo Sidik Tri Wibowo Ayu Nur Safii Oktadi Prayoga Ajat Sudrajat Mizan Bustanul Fuady Bisri Evi Dwi Kurniasari Sheilla Evelinda Nicholas Genta Setiawan Gunawan |
| author_facet | Leni Sophia Heliani Cecep Pratama Adi Wibowo David Prambudi Sahara Susilo Susilo Sidik Tri Wibowo Ayu Nur Safii Oktadi Prayoga Ajat Sudrajat Mizan Bustanul Fuady Bisri Evi Dwi Kurniasari Sheilla Evelinda Nicholas Genta Setiawan Gunawan |
| author_sort | Leni Sophia Heliani |
| collection | DOAJ |
| description | The Mentawai Forearc Sliver (MFS) is characterized by oblique deformation formed as slip partitioned between normal and parallel trench plate convergence. The surge of great earthquakes from 2004 to 2012 along the adjacent Sunda trench left a large unbroken segment known as the Mentawai Seismic Gap. Here, we adopted continuous Global Navigation Satellite System (GNSS) observation data to identify the present regional crustal deformation using geodetic strain rates. The principal strain rate, dilatation rate, and maximum shear strain rate are about 0.13 microstrain/yr, 0.2 microstrain/yr, and 0.1 microstrain/yr, respectively, with the range of its uncertainties between 0.01 and 0.04 microstrain/yr. The dilatation and maximum shear strain rates reveal the spatial coverage of strike-slip duplex and backthrust tectonics along the Mentawai Forearc Sliver. |
| format | Article |
| id | doaj-art-54d400596aef41018fa62df9baf0fa8f |
| institution | Kabale University |
| issn | 1674-9847 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Geodesy and Geodynamics |
| spelling | doaj-art-54d400596aef41018fa62df9baf0fa8f2025-01-13T04:18:34ZengKeAi Communications Co., Ltd.Geodesy and Geodynamics1674-98472025-01-0116116Strain accumulation in the Mentawai Forearc Sliver, Indonesia, inferred from continuous GNSS-derived strain rateLeni Sophia Heliani0Cecep Pratama1Adi Wibowo2David Prambudi Sahara3Susilo Susilo4Sidik Tri Wibowo5Ayu Nur Safii6Oktadi Prayoga7Ajat Sudrajat8Mizan Bustanul Fuady Bisri9Evi Dwi Kurniasari10Sheilla Evelinda11Nicholas Genta Setiawan Gunawan12Department of Geodetic Engineering, Universitas Gadjah Mada, Yogyakarta, IndonesiaDepartment of Geodetic Engineering, Universitas Gadjah Mada, Yogyakarta, Indonesia; Corresponding author.Department of Computer Science, Universitas Diponegoro, Semarang, IndonesiaGlobal Geophysics Research Group, Institut Teknologi Bandung, Bandung, IndonesiaResearch Center for Geological Disaster, National Research and Innovation Agency, Bandung, IndonesiaGeospatial Information Agency, Cibinong, IndonesiaGeospatial Information Agency, Cibinong, IndonesiaGeospatial Information Agency, Cibinong, IndonesiaMeteorological, Climatological, and Geophysical Agency, Jakarta, IndonesiaGraduate School of International Cooperation Studies, Kobe University, JapanGraduate School of Geodetic Engineering, Universitas Gadjah Mada, Yogyakarta, IndonesiaGraduate School of Geodetic Engineering, Universitas Gadjah Mada, Yogyakarta, IndonesiaGraduate School of Geodetic Engineering, Universitas Gadjah Mada, Yogyakarta, IndonesiaThe Mentawai Forearc Sliver (MFS) is characterized by oblique deformation formed as slip partitioned between normal and parallel trench plate convergence. The surge of great earthquakes from 2004 to 2012 along the adjacent Sunda trench left a large unbroken segment known as the Mentawai Seismic Gap. Here, we adopted continuous Global Navigation Satellite System (GNSS) observation data to identify the present regional crustal deformation using geodetic strain rates. The principal strain rate, dilatation rate, and maximum shear strain rate are about 0.13 microstrain/yr, 0.2 microstrain/yr, and 0.1 microstrain/yr, respectively, with the range of its uncertainties between 0.01 and 0.04 microstrain/yr. The dilatation and maximum shear strain rates reveal the spatial coverage of strike-slip duplex and backthrust tectonics along the Mentawai Forearc Sliver.http://www.sciencedirect.com/science/article/pii/S1674984724000363MentawaiForearcDilatationShearGeodetic |
| spellingShingle | Leni Sophia Heliani Cecep Pratama Adi Wibowo David Prambudi Sahara Susilo Susilo Sidik Tri Wibowo Ayu Nur Safii Oktadi Prayoga Ajat Sudrajat Mizan Bustanul Fuady Bisri Evi Dwi Kurniasari Sheilla Evelinda Nicholas Genta Setiawan Gunawan Strain accumulation in the Mentawai Forearc Sliver, Indonesia, inferred from continuous GNSS-derived strain rate Geodesy and Geodynamics Mentawai Forearc Dilatation Shear Geodetic |
| title | Strain accumulation in the Mentawai Forearc Sliver, Indonesia, inferred from continuous GNSS-derived strain rate |
| title_full | Strain accumulation in the Mentawai Forearc Sliver, Indonesia, inferred from continuous GNSS-derived strain rate |
| title_fullStr | Strain accumulation in the Mentawai Forearc Sliver, Indonesia, inferred from continuous GNSS-derived strain rate |
| title_full_unstemmed | Strain accumulation in the Mentawai Forearc Sliver, Indonesia, inferred from continuous GNSS-derived strain rate |
| title_short | Strain accumulation in the Mentawai Forearc Sliver, Indonesia, inferred from continuous GNSS-derived strain rate |
| title_sort | strain accumulation in the mentawai forearc sliver indonesia inferred from continuous gnss derived strain rate |
| topic | Mentawai Forearc Dilatation Shear Geodetic |
| url | http://www.sciencedirect.com/science/article/pii/S1674984724000363 |
| work_keys_str_mv | AT lenisophiaheliani strainaccumulationinthementawaiforearcsliverindonesiainferredfromcontinuousgnssderivedstrainrate AT ceceppratama strainaccumulationinthementawaiforearcsliverindonesiainferredfromcontinuousgnssderivedstrainrate AT adiwibowo strainaccumulationinthementawaiforearcsliverindonesiainferredfromcontinuousgnssderivedstrainrate AT davidprambudisahara strainaccumulationinthementawaiforearcsliverindonesiainferredfromcontinuousgnssderivedstrainrate AT susilosusilo strainaccumulationinthementawaiforearcsliverindonesiainferredfromcontinuousgnssderivedstrainrate AT sidiktriwibowo strainaccumulationinthementawaiforearcsliverindonesiainferredfromcontinuousgnssderivedstrainrate AT ayunursafii strainaccumulationinthementawaiforearcsliverindonesiainferredfromcontinuousgnssderivedstrainrate AT oktadiprayoga strainaccumulationinthementawaiforearcsliverindonesiainferredfromcontinuousgnssderivedstrainrate AT ajatsudrajat strainaccumulationinthementawaiforearcsliverindonesiainferredfromcontinuousgnssderivedstrainrate AT mizanbustanulfuadybisri strainaccumulationinthementawaiforearcsliverindonesiainferredfromcontinuousgnssderivedstrainrate AT evidwikurniasari strainaccumulationinthementawaiforearcsliverindonesiainferredfromcontinuousgnssderivedstrainrate AT sheillaevelinda strainaccumulationinthementawaiforearcsliverindonesiainferredfromcontinuousgnssderivedstrainrate AT nicholasgentasetiawangunawan strainaccumulationinthementawaiforearcsliverindonesiainferredfromcontinuousgnssderivedstrainrate |