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USGS Coastal and Marine Geology Program

Field Activity Details for field activity O199SC

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AKA: none

Other ID: O-1-99-SC

Status: Completed

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

Funding Program(s): Southern California Continental Borderland (MU270)

Principal Investigator(s): Bill Normark

Affiliate Investigator(s):

Information Specialist(s): Jane Reid

Data Type(s): Location-Elevation: Navigation, Seismics: Air Gun / Water Gun, Seismics: Boomer, Seismics: Multichannel, Sonar: Single Beam, Sampling: Geology

Scientific Purpose/Goals: Identify the landslide and earthquake hazards as well as related ground deformation processes that have great potential to impact the social and economic well being of the inhabitants of the Southern California coastal region.


Start Port/Location: Redwood City, CA

End Port/Location: San Diego, CA

Start Date: 1999-06-05

End Date: 1999-06-17

Equipment Used: GPS, 12khz, Huntec, 24channel, airgun, core

Information to be Derived: High-resolution multichannel (MCS) and Huntec seismic-reflection profiles to image the faults and to use dating of sediment -core samples to establish timing and rates of movement on the faults.

Summary of Activity and Data Gathered: Continue surveying (the second of four planned data collection cruises) the coastal zone between Santa Monica and San Diego; MCS and Huntec data will be used to identify the active faults in the nearshore zone and to assess the seismic hazards expected.

Staff: Joe Kelly, Larry Kooker, Kevin O'Toole, Fred Payne, Jane Reid, Ray Sliter, Hal Williams

Affiliate Staff:
Dave Holton (Environmental Careers Organization) - Watchstanding: Navigation & Huntec
Graham Standen (Geoforce Consultants) - Huntec Specialist
Jen Quan (Cascadia Research Collective) - Marine Mammal Observer
Annie Douglas (Cascadia Research Collective) - Marine Mammal Observer
Tamara Guenther (Cascadia Research Collective) - Marine Mammal Observer
Russ Brisendine (F/V North Wind
Inc.) - Ship Captain
Jeff Stringer (F/V North Wind
Inc.) - 1st Mate
Dave Malsch (F/V North Wind
Inc.) - Engineer
Mike Hill (F/V North Wind
Inc.) - Cook
Paul Giron (F/V North Wind
Inc.) - 2nd Mate

Notes: physical data holdings
California continental borderland: Pt Conception to San Dieigo, CA Lines with tags a, b, c, etc. are all planned lines. a, b, etc. were added to the full line name when something in the lab changed during the line (i.e., for mcs, the blue screen of death or some other problem, or for huntec, if the paper ran out or the recording disks ran out). a and b indicators were used independently for mcs and huntec, so they will can not be correlated between the two systems. Once or twice we did the a planned line in two segments on different days (I think 247,247a or 245,245a is one time this happened), but this will show up on with the time indicators. The tags "dl" or "dm" mean dog legs, between planned lines. MCS may have been on during this time, but probably were not recorded. "dm" was used as a,b was noted above. 99l: planned line on the 085 degree or 040 degree trends (Im not sure of the actual orientation of the lines, so dont quote me.) In general (but not every time) MCS was on for these. There are a couple of exceptions. 99n: Huntec-only lines run at night in any orientation.

Staff information imported from InfoBank
Bill Normark (USGS Western Region) - Chief Scientist
Jane Reid (USGS Western Region) - Watchstanding: Navigation & Huntec
Ray Sliter (USGS Western Region) - Watchstanding: Mutichannel Seismic
Dave Holton (Environmental Careers Organization) - Watchstanding: Navigation & Huntec
Larry Kooker (USGS Western Region) - Electronics Technician
Fred Payne (USGS Western Region) - Electronics Technician
Kevin O'Toole (USGS Western Region) - Mechanical Technician
Hal Williams (USGS Western Region) - Mechanical Technician
Graham Standen (Geoforce Consultants) - Huntec Specialist
Jen Quan (Cascadia Research Collective) - Marine Mammal Observer
Annie Douglas (Cascadia Research Collective) - Marine Mammal Observer
Tamara Guenther (Cascadia Research Collective) - Marine Mammal Observer
Russ Brisendine (F/V North Wind, Inc.) - Ship Captain
Jeff Stringer (F/V North Wind, Inc.) - 1st Mate
Dave Malsch (F/V North Wind, Inc.) - Engineer
Mike Hill (F/V North Wind, Inc.) - Cook
Paul Giron (F/V North Wind, Inc.) - 2nd Mate
Joe Kelly (F/V North Wind, Inc.) - A/B

Non USGS data manager = Christina Gutmacher


Southern California

North: 34.1515 South: 32.5517 West: -119.7704 East: -117.23454


photo of Ocean Olympic
Ocean Olympic


Alongi, T., Balster-Gee, A.F., Kluesner, J.W., Sliter, R.W., 2022, Reprocessed multichannel seismic reflection data acquired offshore Southern California during USGS field activity O-1-99-SC: U.S. Geological Survey data release,

Fisher, M., Normark, W., Langenheim, V., Calvert, A., and Sliter, R., 2004, Marine geology and earthquake hazards of the San Pedro shelf region, Southern California: U. S. Geological Survey Professional Paper 1687, 39 p.,

Normark, W.R., Reid, J.A., Sliter, R.W., Holton, D., Gutmacher, C.E., Fisher, M., A., and Childs, J.R., 1999, Cruise Report for 01-99-SC: Southern California Earthquake Hazards Project: U.S. Geological Survey Open-File Report 99-560,

Ryan, H.F., Conrad, J.E., Paull, C.K., McGann, M., 2012, Slip Rate on the San Diego Trough Fault Zone, Inner California Borderland, and the 1986 Oceanside Earthquake Swarm Revisited: Bulletin of the Seismological Society of America, v. 102 no. 6, pp. 2300–2312, doi: 10.1785/0120110317.

Ryan, H.F., Legg, M.R., Conrad, J.E., and Sliter, R.W., 2009, Recent faulting in the Gulf of Santa Catalina; San Diego to Dana Point; Earth science in the urban ocean; the Southern California continental borderland, in Lee, H.J., and Normark, W.R., eds., Earth Science in the Urban OceanâThe Southern California Continental Borderland: Geological Society of America Special Paper 454, pp. 291–315, doi: 10.1130/2009.2454(4.2).

Schreppel, H.A., Degnan, C.H, Dadisman, S.V., and Metzger, D.R., 2013, Archive of U.S. Geological Survey Selected Single-Beam Bathymetry Datasets, 1969â2000: U.S. Geological Survey Data Series 757,

Sliter, R.W., Normark, William R., and Gutmacher, Christina E., 2005, Multichannel seismic-reflection data acquired off the coast of southern California-Part A 1997, 1998, 1999, and 2000: U.S. Geological Survey Open-File Report 2005-1084,


FAN O199SC has data viewable in the GeoMappApp/Virtual Ocean applications. To view this data in these applications go to and See the instructions for locating USGS data in these applications. You can also view the imagery created from the SEGY data at

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
GPS --- Navigation
Best file with nav in ArcInfo E00 format
Survey information
Global positioning system (GPS) data o-1-99-sc.060
Global positioning system (GPS) data o-1-99-sc.061 (Provisional best file)
Global positioning system (GPS) data o-1-99-sc.061_degree
12khz --- Single Beam
Survey information
Raw depth (bathymetry) data o-1-99-sc.300
Raw depth (bathymetry) data o-1-99-sc.301
Raw depth (bathymetry) data o-1-99-sc.302
Raw depth (bathymetry) data o-1-99-sc.302_061 (Provisional best file)
NGDC MGD77 data - bathy
Huntec --- Boomer
Survey information
24channel --- Multichannel
Survey information
Reprocessed multichannel seismic reflection data (Multichannel seismic (MCS) data were collected by the U.S. Geological Survey (USGS) in June of 1999 in the coastal zone and continental shelf between Los Angeles and San Diego, offshore California (USGS field activity O199SC). In 2021 these data were reprocessed to improve accuracy and resolvability of geologic structures and fault systems of California’s continental margin.)
Multichannel data (stack data)
airgun --- Air Gun / Water Gun
core --- Biology

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