Mark Hansen
2015
Single-Beam derived bathymetric contours of Tampa Bay, Florida (2001-2004) in ESRI shapefile format
bathymetric contours
Archive of Bathymetry Data Collected in South Florida from 1995 to 2015
U.S. Geological Survey Data Series-1031
St. Petersburg, Florida
U.S. Geological Survey
https://pubs.usgs.gov/ds/1031/download/TampaBay/contours/DS1031-TampaBay_UTM17_NAVD88-G03.contours.zip
Tampa Bay and its environs have experienced phenomenal urban growth and significant changes in land-use practices over the past 50 years. This trend is expected to continue, with human activity intensifying and affecting a wider geographic region. Urbanization has created impervious surfaces, which increase storm water run-off and contribute to higher levels of chemicals flowing into the area's waters. These chemicals have contributed to declines of sea-grasses and other marine life. A major focus of the USGS CMGP Tampa Bay Study was to investigate sediments and their associated contaminants, and to develop a bay wide circulation model to determine the routes of sediment transport.
High resolution sea floor mapping was conducted in Tampa Bay between 2001 and 2004 as part of the CMGP Tampa Bay Study. High resolution, acoustic bathymetric surveying is a proven method to map sea and estuary elevations. Data was collected throughout the entire bay including all small, peripheral embaymments and channels.
This report serves as an archive of processed single-beam bathymetry data that were collected in Tampa Bay, Florida in 2001-2004. Geographic information system data products include a XYZ data, bathymetric contours, and USGS quadrangle map. Additional files include formal Federal Geographic Data Committee (FGDC) metadata.
Before models could be accurately applied, updated sea floor elevation mapping data was needed for the entire bay. Baseline maps provide the physical context, background and baseline information for other project research, monitoring, and modeling activities. Sea floor elevation mapping provides critical information for development of circulation, hydrologic, sediment transport, water quality, and urbanization integrated modeling.
2001
2004
Data assumed to be constant over time but may change due to geologic processes.
None planned
-82.77863
-82.38404
28.03317
27.49680
USGS Metadata Identifier
USGS:e0ad3c47-8ea1-4cb7-84cd-3241411b81da
General
bathymetry
circulation model
hydrology
mapping
SANDS
sediment dynamics
System for Accurate Nearshore Depth Surveying
single beam
echosounder
erosion
hydrography
U.S. Geological Survey
USGS
Coastal and Marine Geology Program
CMGP
St. Petersburg Coastal and Marine Science Center
SPCMSC
lidar
soundings
elevation
sea floor
orthometric
water depth
EARRL
Experimental Advanced Airborne Research Lidar
ISO 19115 Topic Category
environment
inlandWaters
elevation
geoscientificInformation
imageryBaseMapsEarthCover
oceans
Department of Commerce, 2001, Countries, Dependencies, Areas of
Special Sovereignty, and Their Principal Administrative Divisions,
Federal Information Processing Standard (FIPS) 10-4, Washington,
D.C., National Institute of Standards and Technology
United States
US
U.S. Department of Commerce, 1987, Codes for the identification of
the States, the District of Columbia and the outlying areas of the
United States, and associated areas (Federal Information Processing
Standard 5-2): Washington, D. C., NIST
Florida
FL
Department of Commerce, 1990, Counties and Equivalent Entities of
the United States, Its Possessions, and Associated Areas, FIPS 6-3,
Washington, DC, National Institute of Standards and Technology
Tampa Bay
Tampa
St. Petersburg
Hillsborough River
Manatee River
Alafia River
Egmont Key
The U.S. Geological Survey requests that it be referenced as the originator of this dataset in any future products or research derived from these data.
These data should not be used for navigational purposes.
Mark Hansen
U.S. Geological Survey
Oceanographer
mailing and physical address
600 Fourth Street South
St. Petersburg
FL
33701
USA
(727) 502-8000
mhansen@usgs.gov
USGS Coastal and Marine Geology Program provided funding for the study. The project was conducted as a cooperative study by personnel from the USGS in St. Petersburg, FL. Mark Hansen was the USGS principal investigator. Gina Perry, Nancy DeWitt, and B.J. Reynolds performed a significant portion of bathymetric survey data collection and processing.
Microsoft Windows 7 Enterprise, Service Pack 1; ESRI ArcGIS 10.2.1 Build 3497
Hansen, Mark
Yates, Kim
2006
Gulf of Mexico Integrated Science - Tampa Bay Study
report
USGS Gulf of Mexico Integrated Science
Web report
St. Petersburg, FL
U.S. Geological Survey
http://gulfsci.usgs.gov/tampabay/data/1_bathymetry_sonar/index.html
The accuracy of the data is determined during data collection. This dataset is derived from multiple research cruises using identical equipment, set-ups, and staff; therefore, it is internally consistent. Methods are employed to maintain data collection consistency aboard the platform. During mobilization, each piece of equipment is isolated to obtain internal and external offset measurements with respect to the survey platform. All the critical measurements are recorded manually and digitally entered into their respective programs. Offsets between the single-beam transducers and the Ashtech antenna reference point (ARP) were measured and accounted for in post-processing. Bar checks were performed as calibration efforts and accounted for any drift in the Marimatech Echosounder. Differential Geographic Positioning System (DGPS) coordinates were obtained using post-processing software packages developed by the National Oceanic and Atmospheric Administration (NOAA)/National Geodetic Survey (NGS) Online Positioning User Service (OPUS), National Aeronautics and Space Administration (NASA)/Jet Propulsion Laboratory (JPL) Online Positioning User Service (GIPSY), and Scripps Orbit and Permanent Array Center Online Positioning User Service (SCOUT). Boat trajectories were computed with PNAV v2.0 software by ASHTECH, Inc. These bathymetric data have not been independently verified for accuracy.
This dataset was acquired on multiple research cruises between 2001 and 2004 with identical hardware and software systems.
These are complete post-processed X,Y,Z bathymetric data points from acoustic single-beam system collected in 2001-2004 on Tampa Bay, Florida.
The GPS antenna and receiver acquisition configuration used at the reference station was duplicated on the survey vessel (rover). The base receiver and the rover receiver record their positions concurrently at 1Hz recording intervals throughout the survey. All processed measurements are referenced to the base station coordinates.
GPS base or differential reference stations were operated within approximately 15 to 20 km of the survey area. Nine new temporary ground-control points or benchmarks (surveyed to within 1 cm to 2 cm accuracy) were established throughout the study area for use as reference receiver sites using standard benchmarks procedures. The new benchmarks were surveyed using Ashtech Z-12, 12 channel dual-frequency GPS receivers. Full-phase carrier data were recorded on each occupied benchmark in Ashtech proprietary BIN format with daily occupations ranging from 6 to 12 hours. BIN files were then converted to RINEX-2 format for position processing.
All static base station GPS sessions were submitted for processing to the online OPUS, GIPSY, and SCOUT system software. The computed base location results were entered into a spreadsheet to compute one final positional coordinate and error analysis for that base location. The final positional coordinate (latitude, longitude, and ellipsoid height) is the weighted average of all GPS sessions. For each GPS session, the weighted average was calculated from the total session time in seconds; therefore, longer GPS occupation times held more value than shorter occupation times. Results were computed relative to ITRF00 coordinate system. The established geodetic reference frame for the project was WGS84. Therefore, final reference coordinates used to process the rover data were transformed from ITRF00 to WGS84 using National Oceanic and Atmospheric Administration/National Geodetic Survey(NOAA/NGS) HTDP software v2.1.
OPUS, GIPSY, and SCOUT results provide an error measurement for each daily solution. Applying these error measurements, the horizontal accuracy of the base station is estimated to be 0.04 (m) root mean squared (RMS).
The kinematic (rover) trajectories were processed using PNAV v2.0, by ASHTECH, Inc. A horizontal error measurement, RMS is computed for each epoch. The horizontal trajectory errors for varied between 0 and 0.08(m).
The combined horizontal error from base station coordinate solutions and rover trajectories range from 0 and 0.12 (m), with the average approximately 0.06 (m).
0.04
Static GPS data was processed using OPUS, GIPSY, and SCOUT software and kinematic GPS data was processed with PNAV v2.0 software by ASHTECH, Inc. and SANDS v1.2
The GPS antenna and receiver acquisition configuration used at the reference station was duplicated on the survey vessel (rover). The base receiver and the rover receiver record their positions concurrently at 1Hz recording intervals throughout the survey. All processed measurements are referenced to the base station coordinates.
GPS base or differential reference stations were operated within approximately 15 to 20 km of the survey area. Nine new temporary ground-control points or benchmarks (surveyed to within 1 cm to 2 cm accuracy) were established throughout the study area for use as reference receiver sites using standard benchmarks procedures. The new benchmarks were surveyed using Ashtech Z-12, 12 channel dual-frequency GPS receivers. Full-phase carrier data were recorded on each occupied benchmark in Ashtech proprietary BIN format with daily occupations ranging from 6 to 12 hours. BIN files were then converted to RINEX-2 format for position processing.
All static base station GPS sessions were submitted for processing to the online OPUS, GIPSY, and SCOUT system software. The computed base location results were entered into a spreadsheet to compute one final positional coordinate and error analysis for that base location. The final positional coordinate (latitude, longitude, and ellipsoid height) is the weighted average of all GPS sessions. For each GPS session, the weighted average was calculated from the total session time in seconds; therefore, longer GPS occupation times held more value than shorter occupation times. Results were computed relative to ITRF00 coordinate system. The established geodetic reference frame for the project was WGS84. Therefore, final reference coordinates used to process the rover data were transformed from ITRF00 to WGS84 using National Oceanic and Atmospheric Administration/National Geodetic Survey(NOAA/NGS) HTDP software v2.1.
OPUS, GIPSY, and SCOUT results provide an error measurement for each daily solution. Applying these error measurements, the vertical accuracy of the base station is estimated to be 0.04 (m) root mean squared (RMS).
The kinematic (rover) trajectories were processed using PNAV v2.0, by ASHTECH, Inc. A vertical error measurement, RMS is computed for each epoch. The vertical trajectory errors for varied between 0 and 0.08(m).
The combined vertical error from base station coordinate solutions and rover trajectories range from 0 and 0.14 (m), with the average approximately 0.08 (m).
0.08
Static GPS data was processed using OPUS, GIPSY, and SCOUT software and kinematic GPS data was processed with PNAV v2.0 software by ASHTECH, Inc. and SANDS v1.2
Hansen, Mark
Yates, Kim
2015
Gulf of Mexico Integrated Science - Tampa Bay Study
report
2001
2004
ground condition
USGS Gulf of Mexico Integrated Science
Original processed single-beam bathymetric data
Data Acquisition - The sea-floor of Tampa Bay was mapped by using an outboard motor boat, equipped with a high-precision Global Positioning Systems (GPS) coupled with a high-precision depth sounder. To accomplish this task, the SANDS (System for Accurate Nearshore Depth Surveying) system was developed by Mark Hansen (SPCMSC) and Jeff List (WHSC) of the U.S. Geological Survey. SANDS consists of two components, hardware and processing software.
Survey track lines were spaced 500-meters apart and orientated in a north/south orientation. Channels and inlets were surveyed in greater detail. Track lines collected parallel to the bay shoreline (intersecting track lines) functioned to serve as a cross-check and to assess the relative vertical accuracy of the survey. Crossing lines are critical because they serve as a check on the internal accuracy of the data. Soundings were collected along each track line at 3 m spacing. In shallow areas, data were collected in a minimum of 0.3 m water depth except where there was potential damage to the bottom environment or the boat/motors.
Reference GPS reference stations were operated on an USGS benchmark, typically located within approximately 15 km of the farthest single-beam track line. Reference and rover GPS receivers recorded the 12-channel full-carrier-phase positioning signals (L1/L2) from satellites via ASHTECH choke-ring antennas. The reference and rover receivers record their positions concurrently at 1-second(s) recording intervals throughout the survey.
Boat motion was recorded at 50-millisecond (ms) intervals using a TSS Dynamic Motion Sensor 05 (TSS DMS-05). Bathymetric soundings were recorded at 10-ms intervals using a Marimatech EC-100 survey grade echo-sounder. The single-beam data were acquired using the hydrographic software HYPACK version 5. All data strings from the instruments were streamed in real time and recorded through HYPACK software.
2004
Raw sensor data files in ASCII text format and GPS Carrier-phase data in binary format.
U.S. Geological Survey
Mark Hansen
Oceanographer
mailing and physical
600 4th Street South
St. Petersburg
FL
33701
USA
(727) 502-8000
mhansen@usgs.gov
Differentially Corrected Navigation Processing- The coordinate values of the reference GPS base stations obtained from OPUS were provided in the ITRF00 coordinate system. All survey data for the project was referenced to WGS84. Consequently, reference station coordinates were transformed to WGS84 coordinates using the NOAA/NGS software HTDP v1.3. The respective reference (base) station coordinates utilized as reference positions were imported into PNAV v2.0 software by ASHTECH, Inc. Differentially corrected rover trajectories were computed by merging the master and rover the GPS data. During processing, steps were taken to ensure that the trajectories between the base and rover were clean, resulting in fixed positions. By analyzing the graphs, trajectory maps, and processing logs that GrafNav produces for each GPS session, GPS data from satellites flagged by the program as having poor health or satellite time segments that had cycle slips could be excluded, or the satellite elevation mask angle could be adjusted to improve the position solutions. The final differentially corrected precise DGPS positions were computed for each rover GPS session and exported in ASCII text format.
2004
Boat trajectory data files in ASCII text format.
Mark Hansen
U.S. Geological Survey
Oceanographer
mailing and physical address
600 Fourth St. South
St. Petersburg
FL
33701
727-502-8000
727-502-8032
mhansen@usgs.gov
Single-beam Bathymetry Processing- All data were processed using SANDS version 1.2. The primary purpose of SANDS is to time synchronize processed trajectories, soundings, and heave/pitch/roll, then to merges all data strings. SANDS applies latency errors, applies geometric corrections for antenna staff pitch and roll, applies geometric corrections for antenna transducer pitch and roll (beam correction), time synchronizes the GPS trajectory and HYPACK files for each GPS epoch, and converts WGS84 latitude/longitude coordinates to North American Datum of 1983 NAD83/GRS80 UTM coordinates (m), and applies a geoid separation based upon NOAA/NGS the Geoid99 model. Latitude/longitude conversion to UTM coordinates was accomplished using NOAA/NGS UTM v2.0 software. Intermediate output files are comma delimited text files containing: time of day (seconds of day), UTM X coordinate (m), UTM Y coordinate (m), ellipsoid height, orthometric height, smoothed raw depths, PNAV RMS value, and HYPACK line number. A header line indicates the attributes entry for each column.
Completely processed final XYZ files representing sea-floor elevations.
2004
Final processed bathymetry data files in ASCII text format.
Mark Hansen
U.S. Geological Survey (USGS) - St. Petersburg Coastal and Marine Science Center
Oceanographer
mailing and physical address
600 4th Street South
St. Petersburg
FL
33701
USA
727-502-8000
727-502-8032
mhansen@usgs.gov
The sounding data was entered into a gridding and contouring software packages CPS3 (Radian). Contours were generated using an inverse distance weighting and grid step-down operation. Contours vectors were output then entered into Adobe Illustrator (Adobe) that utilized a plug-in tool Map Publisher. Contours were then overlaid on USGS rectified aerial photograph digital orthometric quarter quadrangle (DOQQ). Using the Illustrator pencil tool, the contours were manually edited based upon operator local knowledge and bathymetric contouring expertise.
2004
U.S. Geological Survey
Mark Hansen
Oceanographer
mailing and physical
600 4th Street South
St. Petersburg
FL
33701
USA
(727) 502-8000
mhansen@usgs.gov
Added keywords section with USGS persistent identifier as theme keyword.
20201013
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Vector
Ring composed of arcs
1355
0.0000001
0.0000001
decimal degrees
WGS84-G1150
WGS84
6378137.0
298.257223563
NAVD88
0.01
meters
Explicit depth coordinate included with horizontal coordinates
DS1031-TampaBay_UTM17_NAVD88-G03.contours.shp
Post-processed, bathymetric contours of Tampa Bay, Florida.
USGS
FID
Internal feature number
ESRI
Sequential unique whole numbers that are automatically generated
Shape
Feature geometry
ESRI
Polyline
Length
Length of feature
ESRI
0
100000.0
meters
0.001
Contour
NAVD88 elevation contour
USGS
-2
-30
meters
1
Mark E. Hansen
U.S. Geological Survey
Oceanographer
mailing and physical address
600 Fourth St. South
St. Petersburg
FL
33701
(727) 502-8000
(727) 502-8032
mhansen@usgs.gov
Single-beam bathymetry, vessel (R/V Streeterville) acquired bathymetric data.
The data have no explicit or implied guarantees. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein.
ASCII
https://pubs.usgs.gov/ds/1031/download/TampaBay/contours/DS1031-TampaBay_UTM17_NAVD88-G03.contours.zip
none
20201013
U.S. Geological Survey
Mark Hansen
Oceanographer
mailing and physical
600 4th Street South
St. Petersburg
FL
33701
USA
(727) 502-8000
mhansen@usgs.gov
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
The U.S. Geological Survey requests that it be referenced as the originator of this dataset in any future products or research derived from these data.
None
Unclassified
None