Abstract by Tara Nye
Modeling of stress accumulation along faults in Sumatra for use in seismic hazard evaluation
Sumatra, Indonesia is one of the most tectonically-active regions in the world. Because it is located along a subduction trench and is bisected by the Sumatra strike-slip fault, it faces frequent major earthquakes, sometimes resulting in tsunamis. Despite this region experiencing great tectonic activity, many of the residents are unaware of the seismic hazard risks or how to prepare for them. Stress accumulation along the faults within the Sumatra region has been modeled using a variety of techniques to better inform residents of the locations of greatest seismic hazard risk. Such techniques involve evaluating GPS data and recent seismic activity as well as using Coulomb to model stress accumulation before and after major events. Results indicate the greatest risk for a major earthquake to be near Padang in the West Sumatra province as well as in some locations along the trench in the southernmost part of Sumatra.