Loading Events

« All Events

  • This event has passed.

January 23 @ 12:00 pm - 1:00 pm CST

Current Research in EEPS Seminar – Dr. Jonathan Ajo-Franklin – Lawrence Berkeley National Laboratory

 

Title:  Exploring the Subsurface with Distributed Acoustic Sensing & Dark Fiber

Abstract:  “Dark Fiber” refers to the large number of fiber optic lines installed for telecommunication purposes but not currently utilized. With the advent of distributed acoustic sensing (DAS), these unused fibers have the potential to become a seismic sensing network with unparalleled spatial extent and density with applications to monitoring both natural seismicity as well as near-surface soil properties. We present results demonstrating the application of DAS to seismic monitoring on a variety of dark “networks of opportunity” including a 20 km run of telecommunications fiber between West Sacramento, CA and Woodland CA, part of the Dark Fiber Testbed maintained by the DOE’s ESnet user facility.  We show that continuous DAS recording on such networks can be leveraged to generate both temporally-resolved near-surface velocity models using infrastructure ambient noise as well as detect local, regional, and teleseismic earthquakes with broadband fidelity. We also show preliminary results from recordings on offshore cables, demonstrating the potential for high-density seismic measurements in previously inaccessible regions.

Details

Date:
January 23
Time:
12:00 pm - 1:00 pm
Event Category:

Venue

Keith-Weiss Geological Laboratories – Room 100
Rice University, 6100 Main Street, MS 126
Houston, TX 77005 United States
+ Google Map
Phone:
713-348-4880
Website:
earthscience.rice.edu

Details

Date:
January 23
Time:
12:00 pm - 1:00 pm
Event Category:

Venue

Keith-Weiss Geological Laboratories – Room 100
Rice University, 6100 Main Street, MS 126
Houston, TX 77005 United States
+ Google Map
Phone:
713-348-4880
Website:
earthscience.rice.edu

For outside visitors, the best way to get to our department is to come in on Rice Blvd and turn into entrance 20 (intersection of Rice and Kent St.). At the stop sign, you will see a visitor parking lot.  From there, walk east to the department.  The google map below shows exactly where our building is.