Coronavirus Information for the UC San Diego Community

Our leaders are working closely with federal and state officials to ensure your ongoing safety at the university. Stay up to date with the latest developments. Learn more.

Faculty Candidate Seminar - Nathaniel Lindsey

03/04/2020 - 2:15pm
Eckart 227
Event Description: 


DATE:          March 4th, Wednesday, 2:15 p.m.  

LOCATION:     Eckart 227

SPEAKER:      Nathaniel Lindsey

            Stanford University
TITLE:  Seafloor fiber-optic seismology in Monterey Bay

Distributed Acoustic Sensing (DAS) is an emerging fiber-optic geophysical method that transforms an optical fiber commonly used for modern telecommunications into a massive geophysical array. Although the details of the DAS measurement principle and instrument response characteristics are still an open subject of research, the potential capability to access broadband (0.001 – 1000 Hz) strain wavefields at the meterscale over tens of linear kilometers wherever fiber is available has wide appeal across the geosciences. In this seminar, I will use DAS data recently collected during a brief, 4-day experiment offshore Monterey Bay, CA to argue that DAS is an important new technology for seafloor science. I will show examples of local earthquake wavefields (0.5 – 20 Hz), primary and secondary microseisms (0.05 – 0.5 Hz), tidal bores (f~1-5 Hz), storm-induced sediment transport (f~0.8-10 Hz), infragravity waves (f=0.01-0.05 Hz), and breaking internal waves (f~0.001 Hz). I will conclude by highlighting where, why and how DAS adds value onshore and offshore, and illustrate potential research directions using this and other emerging fiber-optic methods.

Faculty Host:  Ross Parnell-Turner (
For more information on this event, contact:
Event Calendar: