2:00 PM - 2:15 PM
[SCG48-07] Determination of sVLFE epicenters around the subducted Kyushu-Palau Ridge from coda interferometry
Keywords:shallow very low frequency earthquake, Hyuga-nada region, Kyushu-Palau Ridge
As a result, the locations of sVLFE during 2014 and 2016 were determined at the northern edge of the Kyushu-Palau Ridge (KPR) (Yamamoto et al. 2013), while those on 2017 and 2018 were estimated to be the southern edge of the KPR. In particular, the sVLFEs on 2015 firstly occurred at the northern edge of the KPR, but occurred near the trough afterwards. Also, comparing the area of slow slip event (SSE) in the Hyuga-nada region (Ozawa 2017), sVLFE region at the northern part of KPR directly connects to the SSE region, indicating that slow earthquakes potentially occur from deep to shallow plate interface around the KPR.
This study was supported by “Research Project for Compound Disaster Mitigation on the Great Earthquakes and Tsunamis around the Nankai Trough Region” of the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan. We thank Shinzaburo Ozawa and Yojiro Yamamoto for providing us SSE and KPR data.