Freiburg 2024 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 11: Precision Measurements I (joint session Q/A)
Q 11.4: Vortrag
Montag, 11. März 2024, 17:45–18:00, HS 1221
Large ring lasers in geodesy and seismology — •Simon Stellmer1, Jannik Zenner1, Andreas Brotzer2, Jan Kodet3, Heiner Igel2, and Karl Ulrich Schreiber3 — 1Universität Bonn — 2LMU München — 3Geodätisches Observatorium Wettzell und TU München
The rotation of Earth is not as constant as it may seem. On the contrary, it is modulated through various processes at a large range of frequencies. Traditionally, these variations are measured by astronomical techniques such as VLBI, but there is a new kid on the block: large ring lasers have matured to a level that allows for continuous monitoring of variations in the Earth rotation rate at the level of 10−8 and below. We will give an overview on the three large ring lasers currently operated in Germany, latest advances and technology development, as well as applications and future perspectives.
Keywords: ring laser; gyroscope; geodesy; seismology; Earth rotation