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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 2022-334-FA

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Other ID: Boca Chica Reefense Chirp and MBES

Status: Completed

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

Funding Program(s): Defense Advanced Research Protection Agency (DARPA) Reefense (GR.23.MN00.M0Y21.00)

Principal Investigator(s): Emily Wei, Jennifer Miselis

Affiliate Investigator(s): Defense Advanced Research Projects Agency; US Army Corps of Engineers

Information Specialist(s): Arnell Forde, Chelsea Stalk, Emily Wei

Data Type(s): Imagery: Photo, Location-Elevation: Navigation, Sonar: Multibeam, Sonar: Sound Velocity, Seismics: Sub Bottom Profiler

Scientific Purpose/Goals: Bathymetry mapping and geologic assessment of the nearshore ledge off Boca Chica Key in support of efforts to construct an artificial coral reef offshore of Naval Air Station Key West.

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

Start Port/Location: Boca Chica Key, FL

End Port/Location: Boca Chica Key, FL

Start Date: 2022-11-07

End Date: 2022-11-19

Equipment Used: Digital Camera, SP90 GNSS Receiver, Multibeam Bathymetry System, Castaway-CTD, Valeport MiniSVS, Valeport SVP, Chirp 216

Information to be Derived: Seafloor depth, chirp geophysical, and imagery data. Sediment samples to be collected in Spring 2023

Summary of Activity and Data Gathered: Acquired 53 sub-bottom profiles, 129 multi-beam bathymetry tracklines, and 25,485 seafloor images.

Staff: Benjamin Galbraith, Chelsea Stalk, Emily Wei

Affiliate Staff:

Notes: Entries for this field activity are based on entries from Field Activity 2022-312-FA.


Boca Chica Key, FL, United States, Atlantic Ocean

North: 24.56810753 South: 24.55118293 West: -81.71157073 East: -81.65966034


photo of Sallenger



Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Digital Camera --- Photo
2022_334-FA_polecam_images (Images taken at Boca Chica Key, Florida using the polecam system, available in the CMHRP Imagery Data System (IDS))
SP90 GNSS Receiver --- Benchmarks
2022-334-FA_nav (Navigation data for the entire survey, 1000-shot-interval locations, and start of line locations)
Multibeam Bathymetry System --- Multibeam
BocaChica_2022_MBES_xyz (Processed elevation point data (xyz) as derived from a 1-meter grid provided in both WGS84 (G1762) ellipsoid and NAD83 NAVD88 GEOID12B)
BocaChica_2022_MBES_Backscatter (Processed acoustic intensity backscatter mosaic, derived from the 1-meter grid, provided as a 32-point GeoTIFF in WGS84 (G1762) ellipsoid)
Castaway-CTD --- Sound Velocity
Valeport MiniSVS --- Sound Velocity
Valeport SVP --- Sound Velocity
Chirp 216 --- Sub Bottom Profiler
2022-334-FA_segy (Digital chirp subbottom trace data )
2022-334-FA_gis (Subbottom profile data location maps, geospatial files, and images)
2022-334-FA_seisimag (Processed subbottom profile images )

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