Speaker: Itzhak Lior
Distributed acoustic sensing (DAS) holds great potential for underwater seismology by transforming standard telecommunication cables, such as those currently traversing our world’s oceans, into dense seismic arrays. By probing the fiber from its on-shore end, this technology allows for ground deformation measurements across tens-of-kilometers of underwater fibers. Since most seismic observations are obtained on-land, these new measurements fill a severe observational gap. Several underwater DAS applications will be presented, including the detection capabilities of earthquakes and ambient noise, the comparison between DAS and seismometers, the ability to resolve subsurface geological structures, earthquake early warning applications and more.