RT info:eu-repo/semantics/conferenceObject T1 Photonic Seismology A1 González Herráez, Miguel A1 Fernández Ruiz, María del Rosario A1 Teixeira Magalhaes, Regina Manuela A1 Pereira da Costa, Luis Duarte A1 Fidalgo Martins, Hugo A1 García Ruiz, Andrés A1 Martín López, Sonia A1 Williams, Ethan A1 Zhan, Zhongwen A1 Vantilho, Roel K1 Fiber optics sensors K1 Scattering, Rayleigh K1 Remote sensing and sensors K1 Optical time domain reflectometry K1 Velocimetry K1 Electrónica K1 Electronics AB One of the greatest outstanding challenges in seismology is the sparsity of instrumentation across the Earth, particularly in the oceans. In this work we show that optical fiberbased distributed acoustic sensors (DAS) can represent a low-cost solution (basically inexistent so far) for monitoring seismicity in remote areas of the ocean. This solution can retrofit existing telecommunication optical fiber cables lying in the ocean and transform them (with no basic change in the cable itself) into powerful seismic sensing arrays. With a single optoelectronic unit in the end of the cable (onshore), a full span of 50-100 km can be monitored, with thousands of measuring points interrogated. SN 978-1-943580-72-9 YR 2019 FD 2019-11-11 LK http://hdl.handle.net/10017/41370 UL http://hdl.handle.net/10017/41370 LA eng NO International Photonics and OptoElectronics Meetings 2019, OFDA, 11/11/2019-14/11/2019, Wuhan, China. NO European Commission DS MINDS@UW RD 28-mar-2024