[S-CG40] Science of slow-to-fast earthquakes

[SCG40-P49] ENIGMA: East-Asian Network Initiative for Gravity Measurement Alliance: A Proposal and Science Cases

*Jungkeun John Oh¹, Jeong Woo Kim², Edwin J. Son¹, whansun kim¹, Cheinway Hwang³, Ching-Chung Cheng³, Yoshihiro Ito⁴, Yoshiyuki Tanaka⁵, Wenbin Shen⁶, Wei Luan⁶, Minzhang Hu⁷, Ziwei Liu⁷, Heping Sun⁸, Xiaodong Chen⁸, Sangwook Bae⁹, Heejun Yoon⁹ (1.Gravity Research and Application Team (GReAT), National Institute for Mathematical Sciences, Daejeon, South Korea, 2.Department of Geomatics Engineering, University of Calgary, Calgary, Canada, 3.Department of Civil Engineering, National Yang Ming Chiao Tung University, Hsinchu, Taiwan, 4.Disaster Prevention Research Institute, Kyoto University, Uji, Japan , 5.Department of Earth and Planetary Science, The University of Tokyo, Tokyo, Japan, 6.Department of Geophysics, School of Geodesy and Geomatics, Wuhan University, Wuhan, China, 7.Institute of Seismology, China Earthquake Administration, Wuhan, China, 8.Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, China, 9.Global Science Data-hub Center (GSDC), Korea Institute of Science and Technology Information, Daejeon, South Korea )

Keywords:Superconducting Gravimetry Network, East-Asian Collaboration, Earthquake Detection, Dark matter search inside Earth

We propose the establishment of an observational network comprising micro gravitometers across East Asia including, but not limited to Republic of Korea, Japan, Taiwan, and the Chinese mainland. The network will generate a parallel observation belt within the seismogenic zone that connects the Japan Trench, Ryuku Trenches, and Nankai Through, both constituent components of the Ring of Fire, for the detection of slight changes in micro-gravity for analyzing earthquakes of different magnitudes with different sources and depths. We will establish a data hub for sharing data, managing combined data format, and distributing computing resources for conducting collaborative research. In addition, the network measurement of micro-gravity can be used for searching the dark matter candidate inside Earth. The presentation demonstrates various science cases that could be undertaken by implementing a network of GWR Instruments Inc.’s superconducting gravimeters and a data hub within the East Asian region.