Speaker
Dr
Dominik Husmann
(METAS)
Description
Beyond their main purpose of state-of-the-art frequency dissemination for atomic physics, phase-stabilized fiber-optic networks promise versatile applications as environmental sensors, in particular for seismology. Here we present how such a fiber network can be exploited as an earthquake sensor. We analyze the phase correction signal on a 126 km long fiber leg connecting METAS in Bern to the University of Basel during an M3.9 earthquake in the Mulhouse region. Further, we model the propagation of the seismic waves and simulate their impact onto the fiber, finding a quantitative match between observation and simulation. This validates our system as a quantitative seismic sensor and opens up possiblities for fiber-based earthquake sensing.
Authors
Dr
Dominik Husmann
(METAS)
Dr
Jacques Morel
(METAS)
Prof.
Andreas Fichtner
(ETH Zürich)
Mr
Sebastian Noe
(ETH Zürich)
Mr
Nils Müller
(ETH Zürich)
