报告人：Seongryong Kim金成龙

报告时间：3月24日（周五）10:00-11:30

报告地点：舟山校区海科楼418会议室

报告题目：Trans-dimensional Bayesian ambient noise tomography in NE Asia

报告摘要：

Intra-plate volcanism adjacent to active continental margins is not simply explained by plate tectonics or plume interaction. Recent volcanoes in northeast (NE) Asia, including NE China and the Korean Peninsula, are characterized by heterogeneous tectonic structures and geochemical compositions. Here, we apply a trans-dimensional Bayesian tomography to estimate high-resolution images of group and phase velocity variations (with periods between 8 and 70 s). The method provides robust estimations of velocity maps, and the reliability of results is tested through carefully designed synthetic recovery experiments. Our maps reveal two sub-lithospheric low velocity anomalies that connect back-arc regions (in Japan and Ryukyu Trench) with current margins of continental lithosphere where the volcanoes are distributed. Combined with evidences from previous geochemical and geophysical studies, we argue that the volcanoes are related to the low velocity structures associated with back-arc processes and pre-existing continental lithosphere.

VITA: SEOUNGRYONG KIM
Postdoctoral Fellow, Seoul National University

Personal:

Date and place of birth: 2/4/1981

Citizenship: Republic of Korea
Email: srk@snu.ac.kr

Education:

2/2014      Ph.D. Geophysics, Seoul National University, Seoul, Korea.

           Advisor:  Prof. Junkee Rhie               
           Thesis: "Estimation of Regional Seismic Velocity Models and their
                 Uncertainties using various method"

2/2009      M.S. Geophysics, Seoul National University, Seoul, Korea.
           Advisor:  Prof. Chang-Eob Baag             

           Thesis: "Crustal Velocity Structures of the East African Rift System"

2/2007      B.A., Earth and Environmental Science, Seoul National University, Seoul, Korea.

Research/Work Experience:

2/2017 - present        Postdoctoral Fellow, Seoul National University, Seoul, Korea.

10/2014 - 1/2017 Postdoctoral Fellow, The Australian National University,
                                  Canberra, Australia