Abayomi Osotuyi, Obafemi Awolowo University, Earthquake and Space Weather Laboratory, Geology Department, Ile Ife, Nigeria; Southern University of Science and Technology, Ocean Science and Engineering, Shenzhen, China, Sidao Ni, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, China, Chong Jiajun, CAS Chinese Academy of Sciences, Innovation Academy for Precision Measurement Science and Technology, Wuhan, China, Zhen Guo, Southern University of Science and Technology, Department of Ocean Science and Engineering, Shenzhen, China, Dele Falebita, Obafemi Awolowo University, Earthquake and Space Weather Laboratory, Geology Department,, Ile Ife, Nigeria and John Somiah, Sun Yat-Sen University, School of Earth Sciences and Engineering, Zhuhai Campus, China