报告地点：教学行政楼1004会议室 腾讯会议(会议ID：411 4788 6096）
报告时间：2020-11-27 从 15:00 到 16:30
报告人：郭震
报告人简介：
郭震，南方科技大学海洋科学与工程系任助理教授。2015年毕业于北京大学获博士学位，2014年至2017年澳大利亚麦考瑞大学地球与行星科学系助理研究员。担任国际地学组织YES中国区执委，佘山地球物理国家野外科学观测站副站长。研究领域为固体地球物理学，主要从事地震大地构造，地球物理联合反演新技术的开发与应用等研究。2012年至今在国际知名地学杂志发表论文20余篇，包括EPSL，Geology，JGR-SolidEarth，Gondwana Research，GJI，Tectonophysics，GRL等。担任多个高水平国际期刊审稿人。
报告题目：青藏东北缘东向地幔流地震学证据及岩石圈变形机制
报告内容简介
During the last 50 Ma, the East Asian continent has been a wide zone of crustal and lithospheric deformation. However, the actual causes of deformation across almost the entire eastern Eurasia are still not clear. Here we present seismic evidence for the presence of eastward asthenospheric beneath the northeastern Tibetan Plateau. The mantle flow from northern Tibet is being blocked by thick Ordos and Sichuan cratonic keels, so that it must rotate around the Ordos and then transform into strong east-west flow beneath the thinner lithosphere that forms the suture between the two cratonic keels. Our results also demonstrate that broad continental deformation in eastern China overlies the region of eastward-channeled asthenospheric flow from Tibet.