讲座信息

讲座题目：Multi-Sphere Earth-Space Coupling: LAIC Physics, GEC Electrodynamics, and the Planetary Antenna Paradigm in the IMCP Era

讲座嘉宾：Dimitar P. Ouzounov（利亚索菲亚大学 教授）

讲座主持人：刘芹芹（国家空间科学中心）

时间：2026年10月27日10:00

地点：线上 腾讯会议 411-8560-2478 (点此入会）                                             

          线下 中关村九章大厦A701  

讲座摘要

Earth's lithosphere, atmosphere and geospace operate as an integrated electrodynamic system. This lecture extends Lithosphere-Atmosphere-lonosphere Coupling(LAIC) to space weather and magnetospheric physics. From the bottom up, tectonic stress and radon exhalation may alter boundary-layer conductivity, modulating the Global Electric Circuitand potentially influencing ionospheric electric fields, as investigated using CSES-01/02 observations and GNSS TEC data. From the top down, we introduce the Planetary Antenna concept: during Sudden Storm Commencement (SSC) events, induced telluric currents may concentratein highly conductive zones such as the Sanjiang Tethyan belt, the Southern Tianshan margin and the Balkan-Carpathian region. We explore their possible effects on subsurface fluid migration and fault stress, including reported delays of 0.5-80 days. We also discuss joint observations within the International Meridian Circle Program (IMCP) and physics-informed modelling.

嘉宾介绍

Prof. Dimitar P.Ouzounov is a geophysicist with more than 30 years of experience in geophysics, space physics and natural hazards. He is a Senior Researcher at Sofia University and the Space Research and Technology Institute of the Bulgarian Academy of Sciences, and a VisitingProfessor at Hellenic Mediterranean University, Greece. He previously worked at NASA Goddard Space Flight Center and Chapman University. His research focuses on LAIC and satellite observations of earthquake-related anomalies, using data from DEMETER, Swarm and CSES. He has over 200 scientific publications, is the author oreditor of five monographs,and holds three U.S. patents.