Field Activity 1995-301-FA

Identifier 1995-301-FA
Purpose Detailed, high-resolution maps of Florida Bay mudbank elevations are needed to understand sediment dynamics and provide input into water quality and circulation models. The bathymetry of Florida Bay had not been systematically mapped in nearly 100 years, and some shallow areas of the bay have never been mapped. An accurate, modern bathymetric survey provides a baseline for assessing future sedimentation rates in the Bay, and a foundation for developing a sediment budget. Due to the complexity of the Bay and age of existing data, a current bathymetric grid (digitally derived from the survey) is critical for numerical models. Numerical circulation and sediment transport models being developed for the South Florida Ecosystem Restoration Program are being used to address water quality issues in Florida Bay. Application of these models is complicated due to the complex sea-floor topography (basin/mudbank morphology) of the Bay. The only complete topography data set of the Bay is 100 years old. Consequently, an accurate, modern sea-floor bathymetry map of the Bay is critical for numerical modeling research. A modern bathymetry data set will also permit a comparison to historical data in order to help access sedimentation rates within the Bay.
Location Florida Bay, FL
Summary Number of soundings: 2,138,572 in comma-delimited and Esri point shapefile formats.
Info derived Single beam bathymetry (X,Y,Z) data. Products are ASCII text files of the sounding data and point shapefiles representing seafloor elevations.
Comments This dataset includes bathymetric data south from the Florida Everglades to the Florida Keys and west from Key Largo to Marathon Key. All data were processed relative to the WGS84 (G1150) ellipsoid. Entries for this field activity are based on entries from Field Activity 2001-301-FA Entries for this field activity are based on entries from Field Activity 2001-302-FA
Start Florida Bay, FL 1995-01-01
End Florida Bay, FL 1999-01-01
West -80.85662842
East -80.73162842
North 25.01888433
South 24.89388433
Marine operations Yes


600 Fourth Street South
St. Petersburg, FL33701-4846
(727) 502-8000
Principal investigators Mark Erik Hansen
Crew members
Nancy T DeWitt
Scientist, Staff
Mark Erik Hansen
Scientist, Staff
Information specialist(s)
Nancy T DeWitt
Specialist, Information

Data types and categories

Data category: Location-Elevation, Sonar
Data type: Navigation, Single Beam

Equipment used

Equipment Usage description Data types Datasets
TSS DMS-05 Motion Sensor Interferometric, Single Beam (no data reported)
Ashtech Z-Xtreme DGPS Benchmarks, Navigation (no data reported)
Choke Ring Antenna Benchmarks, Navigation (no data reported)
Marimatech Echosounder Single Beam 3


Datasets produced in this activity

Dataset name Equipment Description Dataset contact Marimatech Echosounder Bathymetric contours in Esri polyline shapefile format. Nancy T DeWitt Marimatech Echosounder Singlebeam soundings in Esri point shapefile format. Nancy T DeWitt Marimatech Echosounder Singlebeam soundings in comma-delimited text format. Nancy T DeWitt


Samples collected during this field activity