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USGS Coastal and Marine Geology Program

Field Activity Details for field activity C110NC

AKA: none

Other ID: C-1-10-NC

Status: Completed

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

Funding Program(s): Coastal and Marine Catastrophic Hazards (ZP00C4A)

Principal Investigator(s): Samuel Johnson

Affiliate Investigator(s):

Information Specialist(s): Ray Sliter

Data Type(s): Electro-Magnetic: Magnetics, Location-Elevation: Navigation, Seismics: Boomer, Seismics: Sparker

Scientific Purpose/Goals: characterization of northern San Andreas fault


Start Port/Location: Noyo Harbor, Fort Bragg

End Port/Location: Noyo Harbor, Fort Bragg

Start Date: 2010-08-09

End Date: 2010-08-15

Equipment Used: magnetics, chirp, sparker, navigation

Information to be Derived: Shallow geologic structure and stratigraphy

Summary of Activity and Data Gathered:


Affiliate Staff:



offshore Fort Bragg

North: 39.56208 South: 39.02353 West: -123.965 East: -123.702


photo of Coral Sea
Coral Sea


Beeson, J.W., and Johnson, S.Y., 2019, Offshore shallow structure and sediment distribution, Punta Gorda to Point Arena, northern California: U.S. Geological Survey Open-File Report 2019-1072,

Beeson, J.W., Johnson, S.Y., and Cochran, S.A., 2019, California State Waters Map Series Data Catalog--Punta Gorda to Point Arena Region, California: U.S. Geological Survey data release,

Beeson, J.W., Johnson, S.Y., Goldfinger, C., and Hartwell, S.R., 2016, Marine Geophysical Data - Point Arena to Cape Mendocino: U.S. Geological Survey data release.


FAN C110NC 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
magnetics --- Magnetics
magnetics (published on Science Base; U.S. Geological Survey data release, DOI: 10.5066/F7GT5K8R)
chirp --- Boomer
Seismic FFID/Shot/CDP data c-1-10-nc.410_chirp (Provisional best file)
chirp survey information
sparker --- Sparker
Seismic FFID/Shot/CDP data c-1-10-nc.410_061_sparker (Provisional best file)
GeoMappApp files
sparker survey information
raw SEG-Y (published on Science Base; U.S. Geological Survey data release, DOI: 10.5066/F7GT5K8R)
corrected SEG-Y data (published on Science Base; U.S. Geological Survey data release, DOI: 10.5066/F7GT5K8R)
navigation --- Navigation

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