Hypocentral Depth Determination of Gyeongju Earthquake Aftershock Sequence

경주 지진 여진의 진원 깊이 연구

  • Chung, Tae Woong (Department of Energy & Mineral Resources Engineering, Sejong University) ;
  • Iqbal, Muhammad Zafar (Department of Energy & Mineral Resources Engineering, Sejong University)
  • Received : 2016.12.30
  • Accepted : 2017.02.21
  • Published : 2017.02.28


Hypocentral depths of 103 aftershocks of the 12 September 2016 Gyeongju earthquake (ML 5.8) were inverted by epicentral relocation, using HYPO71 and HYPOINVERSE. From the comparison of seven models that reflect regional velocity structure in the southern Korean Peninsula, HYPO71 with linear weighting over the whole range showed less residuals than HYPOINVERSE for the model near the epicenter. Less uncertainties of focal depths were observed for the events with large magnitude and short range of the closest S-phase distance.


Supported by : 기상산업진흥원


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