Abstract
North Sulawesi Trench or Minahasa subduction area is a subduction zone between the oceanic crust of Sulawesi Sea and the North Sulawesi Arm located at the triple junction in Eastern Indonesia. This subduction activity causes the North Arm of Sulawesi as an earthquake-prone area. Tectonic activities in the region can be studied through geodetic monitoring using GNSS GPS observations and by physical modelling from the rate of geodetic geometric results. Yearly GNSS GPS campaign have been conducted in the region from 1997 to 2008 and continuously observed by BIG from 2008 to 2016 using permanent GNSS GPS stasion. The coordinates of monitoring stations realized in ITRF-2008 provide residual RMS values of 3.13 mm, 4.15 mm and 7.26 mm for the northern, eastern and vertical components, where this indicates a high degree of accuracy. A simple estimation profile using GNSS GPS data based on the Okada elastic equation for the subduction zone shows a subduction movement ranging from 4 to 5 cm/yr with a locking depth of about 50 km, a dip 300 and ending in the post-seismic phase due to the sequence of earthquakes occurring in Minahasa since January 1, 1996 Mw 7.9 to 16 June 2002 Mw 5.9.
Original language | English |
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Title of host publication | International Symposium on Earth Hazard and Disaster Mitigation, ISEDM 2017 |
Subtitle of host publication | The 7th Annual Symposium on Earthquake and Related Geohazard Research for Disaster Risk Reduction |
Editors | Irwan Meilano, Takeo Ito, Phil R. Cummins, Zulfakriza |
Place of Publication | New York, NY, USA |
Publisher | American Institute of Physics |
Number of pages | 8 |
Volume | 1987 |
ISBN (Electronic) | 978-0-7354-1703-8 |
DOIs | |
Publication status | Published - 2018 |
Event | 7th International Symposium on Earth Hazard and Disaster Mitigation, ISEDM 2017 - Bandung, Indonesia Duration: 20 Nov 2017 → 21 Nov 2017 |
Conference
Conference | 7th International Symposium on Earth Hazard and Disaster Mitigation, ISEDM 2017 |
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Country/Territory | Indonesia |
City | Bandung |
Period | 20/11/17 → 21/11/17 |