《科学大讲堂 第255期》Heiner Igel 教授：从地球自转到地面运动研究：环形激光器在大地测量学和地球物理学中的应用

以下内容根据公开信息整理，并经大模型处理生成，可能存在疏漏或误差，请以实际信息为准。

  • 题目: 从地球自转到地面运动研究：环形激光器在大地测量学和地球物理学中的应用
  • 主讲人：Heiner Igel 教授 @ 慕尼黑大学
  • 时间：2026年9月24日 16:00-17:30
  • 地点：理学院地球与空间科学系E3153报告厅

主讲人简介

Heiner Igel is Professor of Seismology at the Department of Earth Sciences at the Ludwig-Maximilians-University Munich, Germany. After undergraduate studies in Karlsruhe and Edinburgh, he obtained his doctoral degree in 1993 from the Institut de Physique du Globe in Paris developing parallel forward and inverse modelling tools for wave propagation problems. He then moved to the Institute of Theoretical Geophysics in Cambridge UK where he developed wave simulation techniques for regional and global problems with spherical geometry. Since his arrival in Munich in 1999 his main interests are (1) using 3-D modelling tools for wave propagation and rupture problems for the estimation of shaking hazard; (2) development of wave propagation tools for unstructured grids; (3) the influence of precipitation on seismicity; (4) rupture at bimaterial interfaces; and (5) the observation and modelling rotational ground motions. He coordinated the EU funded training networks SPICE and QUEST in the field of computational seismology. He obtained an ERC-Advanced grant in 2013 (co-)developing a multicomponent ring laser system for geodesy and seismology. He wrote a first text book on Computational Seismology and offers a video course in computational methods on the COURSERA platform followed by over 27000 students. He is a member of the German National Academy of Sciences Leopoldina, and a Fellow of the American Geophysical Union.

讲座简介

Twenty years ago, the first extensive data study with ring laser observations – originally designed to observe Earth’s rotational motions for geodesy - of the vertical component of rotation and a collocated broadband seismic sensor revealed the potential of joint rotation and translation observations in seismology (six-degree-of freedom, 6 DoF). These initial results triggered the developments in portable rotation sensing but – as of today – there still is no portable sensor that matches the sensitivity of large ring lasers. Therefore, ring lasers – in particular the multi-component ROMY ring laser installed in the Geophysical Observatory in Munich in 2016 – can serve today as the test bed for any future portable high-sensitivity 6 DoF setups. In this talk, the various “first-of-its-kind” observations with ring laser data will be reviewed. This includes surface wave dispersion, Earth’s free oscillations, tilt correction, ocean generated noise and Love-to-Rayleigh amplitude ratios, estimation of seismic anisotropy, as well as seismic source tracking. Furthermore, we discuss the potential of 6 DoF observations in planetary seismology and for structural health monitoring.

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