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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 2017-324-FA

Other ID: 17BIM05, 17BIM06, 17BIM07, 17BIM08

Status: Completed

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

Funding Program(s): Barrier Island Comprehensive Monitoring - BICM (GR.20.MN00.FT954.00)

Principal Investigator(s): James Flocks

Affiliate Investigator(s):

Information Specialist(s): Julie Bernier, Chelsea Stalk

Data Type(s): Location-Elevation: Benchmarks, Location-Elevation: Navigation, Seismics: Sub Bottom Profiler, Sonar: Single Beam, Sonar: Sound Velocity

Scientific Purpose/Goals: Collect single beam bathymetry and seismic profiles along the Louisiana Chenier Plain coastline from Marsh Island to Sabine Pass, TX.

Vehicle(s): Rental Vehicle, White Dodge Pickup - White, Ford F-350 Dually White (GSA)

Start Port/Location: Abbeville, LA

End Port/Location: Rockefeller NWR, LA

Start Date: 2017-07-06

End Date: 2017-07-18

Equipment Used: Choke Ring Antenna, Ashtech ProFlex 800 GNSS Receiver, ODOM-Echotrac CV-100, Castaway-CTD, Ashtech ProFlex 500 GNSS Receiver, Collapsible Tripod, Other, Other, Chirp 424

Information to be Derived: Single beam bathymetry and sub-bottom profiles.

Summary of Activity and Data Gathered: 683 SBB lines were collected for a total of 1,935 Km of data along the southern LA coast from Rockefeller NWR to Sabine Pass. Four sub-bottom profiles were collected.

Staff: Julie Bernier, Nancy DeWitt, Andrew Farmer, James Flocks, Joseph Fredericks, Kyle Kelso, Chelsea Stalk, Hunter Wilcox

Affiliate Staff:

Notes: This will be leg 2 of 2 trips to survey the full extent:
Sub FANs:
17BIM05 = R/V Sallenger - SBB + chirp
17BIM06 = R/V TwinVee - SBB
17BIM07 = R/V Shark (White = WVR1) - SBB
17BIM08 = R/V Chum (Blue = WVR2) - SBB

Entries for this field activity are based on entries from Field Activity 2017-323-FA


Leg 2: Western Chenier Plain

North: 29.7588636 South: 29.44806262 West: -93.8575 East: -91.74951088


photo of Personal Water Craft (Blue WVR2 - Chum)
Personal Water Craft (Blue WVR2 - Chum)
photo of Personal Water Craft (White WVR1 - Shark)
Personal Water Craft (White WVR1 - Shark)
photo of Sallenger
photo of Twin Vee (Jabba Jaw)
Twin Vee (Jabba Jaw)


Flocks, J.G., Forde, A.S., Bernier, J., 2022, Chenier Plain region bathymetric and topographic datasets: Methodology report: U.S. Geological Survey Open-File Report 2022-1014, 21 p.,

Forde, A.S., Fredericks, J.J., Flocks, J.G., 2019, Archive of chirp subbottom profile data collected in 2017 From the Louisiana Chenier Plain: U.S. Geological Survey data release,


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Choke Ring Antenna --- Benchmarks
No data was collected
Ashtech ProFlex 800 GNSS Receiver --- Benchmarks
ODOM-Echotrac CV-100 --- Single Beam (Bathymetry Digital Elevation Model (DEM) 200m cell size in both WGS84 ITRF00 (G1150) and NAD83 NAVD88 Geoid 12A) (Single-beam tracklines in WGS84 ITRF00 (G1150)) (Single-beam x,y,z data in both WGS84 ITRF00 (G1150) and NAD83 NAVD88 Geoid 12A)
Castaway-CTD --- Sound Velocity
Ashtech ProFlex 500 GNSS Receiver --- Benchmarks
Collapsible Tripod --- Benchmarks
No data was collected
Other --- --- ---
Other --- --- ---
Chirp 424 --- Sub Bottom Profiler (Survey trackline locations (.mxd, .kml, .shp)) (Navigation data (.txt)) (Unprocessed digital chirp subbottom trace data (.sgy)) (Processed subbottom profile images (.gif))

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