Estimating fault slip directly from GPS phase data: For understandings of postseismic slip

2015 Fiscal Year Final Research Report

• Project/Area Number: 24540453
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Solid earth and planetary physics
• Research Institution: Kyoto University
• Principal Investigator: miyazaki shinichi 京都大学, 理学(系)研究科(研究院), 准教授 (00334285)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: GPS / 断層すべり

Outline of Final Research Achievements

We developed a program to infer the slip on the fault under the condition that the slip is uniform over the entire fault. This is applicable only for a limited area up to 10km because the error is not corrected. We also estimated 2.5 years of afterslip and viscoelastic rebound simultaneously for the 2011 Tohoku-Oki earthquake. We quantitatively evaluated contributions of afterslip and viscoelastic relaxation. The latter causes landward movements at the ocean bottom GPS/Acoustic stations.

Free Research Field

測地学