1. Department of Geological Sciences, Pusan National University, Busan 46241, Korea, kwanghee@pusan.ac.kr
2. Earthquake Research Center, Korea Institute of Geosciences and Mineral Resources, Daejeon 34132, Korea
3. Division of Earth Environmental System Science, Pukyong National University, Busan 48513, Korea
4. School of Earth and Environmental Sciences, Seoul National University, Seoul 08826, Korea
5. Division of Polar Earth‐System Sciences, Korea Polar Research Institute, Incheon 21990, Korea
6. Korea Institute of Ocean Sciences and Technology, Ansan, Gyeonggi‐do 15627, Korea
7. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
8. Also at University of Chinese Academy of Sciences, No.19(A) Yuquan Road, Shijingshan District, Beijing 100049, People’s Republic of China.