Hypocenter Relocation along the Sunda Arc in Indonesia, Using a 3D Seismic-Velocity Model

Andri D. Nugraha, Hasbi A. Shiddiqi, Sri Widiyantoro

Penerbit : Seismological Research Letters

Tahun : 2018

The tectonics of the Sunda arc region is characterized by the junction of the Eurasian and Indo-Australian tectonic plates, causing complex dynamics to take place. High-seismicity rates in the Indonesian region occur due to the interaction between these tectonic plates. The availability of a denser network of seismometers after the earthquakes of Mw 9.1 in 2004 and Mw 8.6 in 2005 supports various seismic studies, one of which regards the precise relocation of the hypocenters. In this study, hypocenter relocation was performed using a teleseismic double-difference (DD) relocation method (teletomoDD) combining arrival times of P and S waves from stations at local, regional, and teleseismic distances.

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