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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 2021-322-FA

Other ID: none

Status: Completed

Organization(s): USGS, St. Petersburg Coastal and Marine Science Center

Funding Program(s): Gulf Island National Seashore - GUIS Sediment Budget (GR.22.MN00.M1B01.00)

Principal Investigator(s): James Flocks

Affiliate Investigator(s):

Information Specialist(s): Arnell Forde

Data Type(s): Seismics: Sub Bottom Profiler, Sonar: Single Beam, Sonar: Sound Velocity

Scientific Purpose/Goals: Investigate nearshore geologic controls and surface morphology.

Vehicle(s): Ford F-350 Dually Grey (GSA)

Start Port/Location: Pensacola, Florida

End Port/Location: Pensacola, Florida

Start Date: 2021-06-02

End Date: 2021-06-09

Equipment Used: Chirp 216, ODOM-Echotrac CV-100, Castaway-CTD

Information to be Derived: Holocene stratigraphy

Summary of Activity and Data Gathered: 95 sub-bottom profile lines were collected, 91 were processed.

Staff: Nancy DeWitt, Joseph Fredericks

Affiliate Staff:

Notes: Chirp 216 is being rented from Echo81, which is located in Hartwell, GA.


Santa Rosa Island, Florida

North: 30.47486376 South: 30.28753159 West: -87.41928513 East: -86.72332843


photo of Sallenger


Forde, A.S., DeWitt, N.T., and Flocks, J.G., 2022, Archive of chirp subbottom profile and single-beam bathymetry data collected in 2021 from Santa Rosa Island, Florida: U.S. Geological Survey data release,


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Chirp 216 --- Sub Bottom Profiler (Digital chirp subbottom trace data) (Navigation data for the entire survey, 1000-shot-interval locations, and start of line locations) (Processed subbottom profile images) (Geospatial files representing the subbottom profile location data ) (Single-beam bathymetry xyz data in both WGS84 (G1762) ellipsoid and NAD83 NAVD88 GEOID12A)
ODOM-Echotrac CV-100 --- Single Beam
Castaway-CTD --- Sound Velocity

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