Tomography of the source zone of the 2016 South Taiwan earthquake

On February 6, 2016, a Mw 6.4 earthquake occurred in Kaohsiung City, southern Taiwan, at a depth of 17 km (hereinafter we call it the 2016 South Taiwan earthquake). It caused 116 fatalities and widespread damage to infrastructures, especially in the Tainan city. To clarify the generating mechanism of this damaging earthquake, we conducted seismic tomography for high-resolution 3-D V p, Vs and Poisson’s ratio (σ) structures in the epicentral area. We used 91,703 Pand 51,718 S -wave arrival times from 7,038 local earthquakes (0.6≤M≤5.8) recorded at 41 seismic stations operated by the Central Weather Bureau in South Taiwan during 2000-2011.

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