Utilizing distributed acoustic sensing and ocean bottom fiber optic cables for submarine structural characterization.

ABSTRACT: The sparsity of permanent seismic instrumentation in marine environments often limits the availability of subsea information on geohazards, including active fault systems, in both time and space. One sensing resource that provides observational access to the seafloor environment are existing networks of ocean bottom fiber optic cables; these cables, coupled to modern distributed acoustic sensing (DAS) systems, can provide dense arrays of broadband seismic observations capable of recording both seismic events and the ambient noise wavefield. Here, we report a marine DAS application which demonstrates the strength and limitation of this new technique on submarine structural characterization. Based on ambient noise DAS records on a 20 km section of a fiber optic cable offshore of Moss Landing

SUBMITTER: Cheng F 

PROVIDER: S-EPMC7946901 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature