PhD Oral Defense of Rino Salman: Integrating Geodetic Images and Physics-Based Modeling towards Understanding Earthquake Ruptures in Indonesia
- Oral Defense
About the Event:
To help with efforts to mitigate earthquake hazards, we need to understand how faults have behaved in the past -- for example, how far earthquake ruptures propagate along strike and depth of the faults, and what mechanisms control the extent of earthquake ruptures along the faults -- so that we can ultimately provide insight into their future rupture behaviour. In my thesis, I integrate geodetic data with physics-based modelling and with insights from seismology, geology, and volcanology to better understand how tectonic structures and fault properties affect earthquake ruptures. I study the 2008 Mw 7.2 North Pagai earthquake on the Mentawai patch offshore west Sumatra, a number of Mw ~6 strike-slip earthquakes between 2007 and 2016 on the Sumatran Fault Zone, and the 2018 Mw ~6 thrust earthquakes on the Flores thrust north of Lombok, eastern Indonesia. The study shows that the extent of these earthquake ruptures was controlled by either internal factors such as frictional properties of the fault or external factors such as step-overs and geothermal anomalies.
- Professor Benjamin Horton (Chairman), Nanyang Technological University, Singapore
- Assistant Professor Aron Meltzner (Internal Examiner), Nanyang Technological University, Singapore
- Assistant Professor Judith Hubbard (Oral Examiner), Nanyang Technological University, Singapore
- Associate Professor Emma Hill (Main Supervisor), Nanyang Technological University, Singapore
About the Speaker:
Rino Salman received his Bachelor’s degree in Geodetic Engineering (2010) and Master’s degree in Earth Science (2012) from the Institut Teknologi Bandung, Indonesia. In the Fall of 2014, he joined Nanyang Technological University as a PhD student with Assoc. Prof. Emma Hill. His PhD’s research focused on understanding source characteristics of earthquakes by modeling GPS and InSAR data. Currently, he is working on large-scale InSAR processing and its time series analysis over the Sumatra and Java regions. The goals are to study interseismic strain accumulation of the Sumatran Fault and other interesting topics such as volcano deformation, peatland and groundwater-related subsidence.