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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 2014-645-FA

AKA: none

Other ID: none

Status: Completed

Organization(s): USGS, Pacific Coastal and Marine Science Center, USGS, Woods Hole Coastal and Marine Science Center

Funding Program(s): Coastal and marine earthquake, tsunami, and landslide active margin field studies (ZP00EQV)

Principal Investigator(s): Daniel Brothers

Affiliate Investigator(s):

Information Specialist(s): James Conrad, Ray Sliter

Data Type(s): Location-Elevation: Navigation, Seismics: Multichannel, Seismics: Sparker, Seismics: Sub Bottom Profiler

Scientific Purpose/Goals: low-energy, high-resolution multichannel seismic reflection survey offshore southern California to assess the earthquake and submarine landslide hazards

Vehicle(s): None

Start Port/Location: San Diego, California

End Port/Location: San Diego, California

Start Date: 2014-11-12

End Date: 2014-11-25

Equipment Used: navigation, Other, Sparker, multichannel, 512 chirp

Information to be Derived: seismic stratigraphy, fault/basin structure, tectonic deformation

Summary of Activity and Data Gathered: raw data Sproul_2014 on FAD

Staff: Jackson Currie, Robert Wyland

Affiliate Staff:

Notes: Cruise will be aboard the R/V Robert Gordon Sproul using 48-ch MCS streamer, SC single channel 500 joule acoustic sparker from Woods Hole and and 512 chirp from PCMG.
Chuck Worley of WHSC will also participating


Southern California Borderlands

North: 34.22542902 South: 32.75509185 West: -120.443 East: -117.26803153


photo of Robert Gordon Sproul
Robert Gordon Sproul


Balster-Gee, A.F., Kluesner, J.W., Brothers, D.S., Conrad, J.E., and Sliter, R.W., 2017, Minisparker and chirp seismic-reflection data of field activity 2014-645-FA; offshore Santa Barbara, southern California from 2014-11-12 to 2014-11-25 (ver. 2.0, March 2020): U.S. Geological Survey data release,

Conrad, J.E., Prouty, N.G., Walton, M.A.L., Kluesner, J.W., Maier, K.L., McGann, M., Brothers, D.S., Roland, E.C., and Dartnell, P., 2018, Seafloor fluid seeps on Kimki Ridge, offshore southern California: Links to active strike-slip faulting: Deep Sea Research Part II: Topical Studies in Oceanography, Special Issue 'Results of Telepresence-Enabled Oceanographic Exploration', v. 150, pp. 82–91, URL:

Kluesner, J., Brothers, D., Hart, P., Miller, N., and Hatcher, G., 2019, Practical approaches to maximizing the resolution of sparker seismic reflection data: Marine Geophysical Research, v. 40 no. 3, pp. 279–301, URL:

Walton, M.A.L., Brothers, D.S., Conrad, J.E., Maier, K.L., Roland, E.C., Kluesner, J.W., and Dartnell, P., 2020, Morphology, structure, and kinematics of the San Clemente and Catalina faults based on high-resolution marine geophysical data, southern California Inner Continental Borderland (USA): Geosphere, , URL:


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
navigation --- Navigation
Other --- --- ---
Sparker --- Sparker
multichannel --- Multichannel
512 chirp --- Sub Bottom Profiler

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