EXPLOITING REAL TIME DATA FROM THE MONTEREY OCEAN FLOOR BROADBAND OBSERVATORY (MOBB)

Details EXPLOITING REAL TIME DATA FROM THE MONTEREY OCEAN FLOOR BROADBAND OBSERVATORY (MOBB) EXPLOITING REAL TIME DATA FROM THE MONTEREY OCEAN FLOOR BROADBAND OBSERVATORY (MOBB)

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufm.s51d..04r&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #S51D-04

Mathematics

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[7219] Seismology / Seismic Monitoring And Test-Ban Treaty Verification, [7220] Seismology / Oceanic Crust, [7230] Seismology / Seismicity And Tectonics, [7294] Seismology / Seismic Instruments And Networks

Scientific paper

The Monterey Ocean Bottom Broadband (MOBB) observatory has been acquiring broadband seismic data and auxiliary channels (differential pressure and current meter) since its installation on the ocean floor in Monterey Bay, at 1000 m water depth and 40 km off-shore. Operating autonomously for almost 7 years, the system was successfully connected to the MARS cable (www.mbari.org/mars) on February 26th, 2009, via a 3.6 km extension cable from the MARS science node. The system works as designed and is currently streaming data from seismic, pressure, and water-current sensors to the Berkeley Seismological Laboratory, where it joins data from other broadband stations on land and is archived at the Northern California Earthquake Data Center. The availability of real-time MOBB broadband seismic data provides an opportunity for improving earthquake-monitoring capability in central California, particularly near the Santa Cruz Mountains segment of the San Andreas fault, and the San Gregorio fault. While buried in the mud, MOBB is affected by oceanic sources of noise, which are particularly strong in the infragravity wave band, and care must be taken to reduce this background noise in post-processing. We present examples of data analysis and illustrate how MOBB contributes to the determination of source parameters and regional structure.

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