Pakhrur Razi, J.T.S. Sumantyo, Ming Yam Chua, Ganefri, Daniele Perissin, Takeo Tadono
Ever since the last occurrence of a significant earthquake in the Mentawai megathrust zone in 2000, no significant earthquake events have been recorded, which, according to the earthquake repetition cycle, suggests that the zone is a potential epicenter of future earthquakes. The southern and northern parts of the zone have been struck by a significant earthquake with magnitude M > 8.0; however, in the potential location of the Mentawai Islands, earthquake energy has not been released. This research shows the tectonic activity, velocity, and shift that occurred owing to the thrust of the plate. The information is a vital reference for estimating the epicenter of the earthquake whose energy has not yet been released. We analyzed the tectonic characteristics according to the synthetic aperture radar data and geodetic global positioning system observations. The results show that the Pagai Islands are experiencing consistent tectonic deformations. The northern region of North Pagai and the Northern region of South Pagai are experiencing significant subsidence, while the southwest (SW) region of North Pagai and the south segment of South Pagai are experiencing significant uplift. The government and local authorities can use this information as a guide for developing strategies for disaster preparation. © 2023 The Authors
Physics Department, Math, and Natural Science Faculty, Universitas Negeri Padang, Indonesia; Center of Disaster Monitoring and Earth Observation, Universitas Negeri Padang, Indonesia; Center of Environmental Remote Sensing, Chiba University, Japan; School of Electrical Engineering and Artificial Intelligence, Xiamen University Malaysia, Malaysia; Electrical Department, Faculty of Engineering, Universitas Negeri Padang, Indonesia; Lyle School of Civil Engineering, Purdue University, West Lafayette, United States; Earth Observation Research Center Space Technology Directorate I, Japan Aerospace Exploration Agency (JAXA), Japan
