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 faultstress, 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 currently affiliated with the Hellenic Mediterranean University Research Center (HMU) in Greece, the Istituto Nazionale di Geofisica e Vulcanologia (INGV) in Italy, Sofia University, and the Space Research and Technology Institute at the Bulgarian Academy of Sciences (SRTI-BAS). His research focuses on LAIC and satellite observations of earthquake-related anomalies using data from DEMETER, Swarm, and CSES.