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2011 Seafloor Mapping Mission Home

Data

All users are strongly encouraged to download the technical reports (such as the Data Acquisition and Processing Report) in conjunction with any data for a better understanding of the project details, and to guide them in determining appropriate data uses.



Benthic Habitat Viewer Database »

*The online Benthic Habitat Viewer (BHV) database provides **access to over 9,000 underwater seafloor images collected to support comprehensive seafloor characterization of the U.S. Caribbean (Puerto Rico and the U.S. Virgin Islands). The database provides access to a library of underwater imagery, accompanied by information on image location, biological inventory, benthic habitat characterization, geomorphological structure, and seafloor terrain characteristics (i.e., bathymetry, slope, and rugosity). The database will continue to be updated with additional imagery as collected from future missions.

Benthic Habitat Camera System »



All data products are organized by individual project area. Some data products are also available as unified datasets encompassing the data from each of the mission years. The original full resolution datasets are in raw GSF, XTF, ALL and processed HDCS formats (along with the appropriate correctors), and are archived at the National Geophysical Data Center (NGDC). The following deliverables are available for download in zip format:

DISCLAIMER: The National Oceanic and Atmospheric Administration (NOAA) Biogeography Branch does not guarantee the accuracy of the geographic features or attributes contained in this data. Not for navigational use. Please see the technical documentation and the individual metadata records for each data set for complete information on its source, limitations, and proper use. Please cite any use of this data.

Mission 2013

Project Areas 2013

Multibeam data as well as underwater photos and videos were collected from NOAA Ship Nancy Foster between 03/05/2013 and 03/29/2013 south of Isla de Vieques and northeast of Puerto Rico in the U.S. Caribbean. All products made available here are in UTM zone 20N, datum NAD83.

Multibeam Bathymetry

Multibeam data were collected with a hull-mounted Kongsberg EM 1002 multibeam echo sounder for water depths greater than 100 m, and with a moon pool mounted Reson Seabat 7125 multibeam echo sounder for areas shallower than 100 m. The final processed bathymetry data will be made available here later this year.

Multibeam Backscatter

Backscatter data from the EM 1002 and the Seabat 7125 multibeam echosounders were corrected for geometric and radiometric distortions using GeoCoder (FMGT 7.3.3. and Caris 7.1.2.). In particular, the following corrections were applied to the data: AVG Flat, TVG correction, TX Power and RX Gain, Area Correction, Spherical Spreading, Absorbtion, Navigation attitude, Transducer Attitude and Slant-Range Distortion. The mosaics from 2013 were exported as 32 bit GeoTIFFs with corrected decibel backscatter values for use in GIS. A combined mosaic was produced for the whole Northeast Reserve deep area in corrected decibel backscatter values (all raw data from 2012-2013 reprocessed together). A combined mosaic was also was produced for the whole NE Reserve shallow area in relative 8-bit 0 – 255 values (mosaics from 2012 and 2013 adjusted and merged into one).

Multibeam Backscatter:
Project Area Resolution (in meters)
Northeast Grand Reserve, PR - Shallow (2013) 1
Northeast Grand Reserve, PR - Shallow (2012-2013) 1
Northeast Grand Reserve, PR - Deep (2012-2013) 8
Haystack Seamount, PR - Shallow-Deep (2013) 8
Escollo Grapper Seamount, PR - Shallow-Deep (2013) 4
Vieques, PR - Shallow (2013) 1
Vieques, PR - Deep (2013) 8


Underwater Photography & Video Ground Truthing

Underwater photos and videos were collected using a remotely operated vehicle (ROV). The ESRI shapefiles (available for download below) denote their geographic location. These photos and videos will be manually classified into different habitat classes, and integrated with the abiotic data collected by Sonar (Sound Navigation and Ranging) systems to develop a benthic habitat map for the U.S. Caribbean. Habitat maps describe the location of habitat features (in relation to the shoreline), their physical composition and the types of organisms that colonize them. Fundamentally, habitat maps provide critical information about the extent, health and composition of marine resources, which is vital for communicating information about the distribution and abundance of species to resource managers, scientists and the public.

ROV Transects:
Northeast Grand Reserve, PR ROV 2013 Points ROV 2013 Lines

Mission 2012

Project Areas 2012

Multibeam Bathymetry

Multibeam data were collected with a hull-mounted Simrad EM 1002 multibeam SONAR for water depths greater than 75 m, and with a moon pool flange-mounted Reson 7125 multibeam echosounder for areas shallower than 75 m. It was processed by a NOAA contractor using CARIS HIPS/SIPS v.7.1 software. Data was reduced to mean lower low water (MLLW) using final approved tides from NOAA COOPS. All products in the 2012 study sites are in UTM zone 20N, datum NAD83. The products that include data for all the study sites (i.e., 2004-2012) are in UTM zone 20N, datum NAD83. Available bathymetry products include CARIS BAG files (Bathymetric Attributed Grid) and georeferenced TIFF images.

Project Area Resolution (in meters)
  CARIS BAG files: TIFF Images (Georeferenced):
2004-2012 Unified - All Project Areas n/a 10
2012 Unified - All Project Area 8 8
Northeast Grand Reserve, PR - South 4 4
Northeast Grand Reserve, PR - North 8 8


Multibeam Backscatter

Backscatter data were collected using a Simrad EM 1002 and a Seabat 7125 multibeam echosounder. The data were corrected for geometric and radiometric distortions using Geocoder. In particular, the following corrections were applied when artifacts were evident: AVG Flat, TX Power and RX Gain, Area Correction, Spherical Spreading, Tx and Rx Beam Patterns, Navigation attitude, Transducer Attitude and Slant-Range Distortion. The final mosaics were exported as GeoTIFFs in relative 8-bit (0 – 255) values for use in a GIS.

Multibeam Backscatter:
Project Area Resolution (in meters)
Northeast Grand Reserve, PR - South 4
Northeast Grand Reserve, PR - North 8


Derived Products: Slope, Rugosity

ESRI grids and georeferenced TIFF images of multibeam bathymetry were used to calculate derived products, such as ESRI grids and georeferenced TIFF images of bathymetric slope and rugosity. Slope in degrees was calculated using the ArcGIS Spatial Analyst extension, while rugosity was generated by the Jennesset toolset called the DEM (Digital Elevation Model) Surface Tools. More detailed information is available in the metadata of individual files.

Slope and Rugosity:
Project Area Resolution (in meters)
  Slope Rugosity
Northeast Grand Reserve, PR - South 4 4
Northeast Grand Reserve, PR - North 8 8


Underwater Photography & Video Ground Truthing

A remotely operated vehicle (ROV) and an underwater drop camera were used to acquire video and high resolution still photos of the seafloor. The locations of these videos and photos are available for download (below) as point and polyline ESRI shapefiles in NAD83 UTM 20N. These videos and photos will be manually classified by Biogeography Branch scientists, and partitioned into distinct geomorphological structure, biological cover and live coral cover categories. A map of the seafloor habitats in the Virgin Passage and St. John Shelf will be developed by integrating this ground truthing dataset with the spatially coincident multibeam imagery.

ROV Transects:
Northeast Grand Reserve, PR ROV 2012 Points ROV 2012 Lines

Mission 2011

Project Areas 2011

LiDAR Bathymetry

LiDAR bathymetry data were collected using a LADS (Laser Airborne Depth Sounder) Mark II Airborne System that was flown by Fugro LADS. Surveys were conducted in the St. Thomas/St. John study areas on 13 separate dates between 1/29/11-2/28/11, and in St. Croix on 2/21/11 and 2/22/11. The data was processed by a Fugro contractor using the LADS Mk II Ground System, and later using CARIS BASE Editor 3.2.0 software. Data was reduced to mean lower low water (MLLW) using final approved tides from NOAA COOPS. All products are in UTM zone 20N, datum NAD83. A NOAA contractor produced the available georeferenced TIFF bathymetry products using ArcGIS 10.0.

Project Area Bathymetric Dataset Resolution
St. Thomas/St.John 3
Buck Island 3
Salt River 5


LiDAR Reflectance

LiDAR relative reflectance (RR) data were collected using the same LADS (Laser Airborne Depth Sounder) Mark II Airborne System. However unlike the bathymetry processing workflow, which only considers the leading edge of the return waveform, RR processing requires an integration of the entire return pulse. Fugro contractors took into account several sources of the pulse energy loss that would distort the seabed reflectivity during this processing. Included among these were air/water interface and water column losses, as well as optical filtering, receiver field of view, and other system-specific losses. The RR as calculated for each pulse therefore represents the ratio between the received (normalized) energy and the transmitted energy. The entire cleaned dataset was then scaled by a NOAA contractor to ensure the full dynamic range is used over the dataset, and later exported as GeoTIFFs in relative 8-bit (0-255) values for use in a GIS.

TIFF Images (Georeferenced)
Project Area Resolution (meters)
St. Thomas/St.John 3.3
Buck Island 3
Salt River 5

Multibeam Bathymetry

Multibeam data were collected with a hull-mounted Simrad EM 1002 multibeam SONAR for water depths greater than 75 m, and with a moon pool flange-mounted Reson 7125 multibeam echosounder for areas shallower than 75 m. It was processed by a NOAA contractor using CARIS HIPS/SIPS v.7.1 software. Data was reduced to mean lower low water (MLLW) using final approved tides from NOAA COOPS. All products in the 2011 study sites are in UTM zone 20N, datum NAD83. The products that include data for all the study sites (i.e., 2004-2011) are in UTM zone 19N, datum NAD83. Available bathymetry products include CARIS BAG files (Bathymetric Attributed Grid), an ESRI Grid for the multi-year unified bathymetry, and georeferenced TIFF images.

Project Area Resolution (in meters)
  CARIS BAG files: ESRI Grids: TIFF Images (Georeferenced):
2011 Unified - All Project Areas n/a 8 8
St. Thomas Bank 2 n/a 2
St. John Shelf 2, 4, & 8 n/a 2, 4, & 8


Multibeam Backscatter

Backscatter data were collected using a Simrad EM 1002 and a Seabat 7125 multibeam echosounder. The data were corrected for geometric and radiometric distortions using Geocoder. In particular, the following corrections were applied when artifacts were evident: AVG Flat, TX Power and RX Gain, Area Correction, Spherical Spreading, Tx and Rx Beam Patterns, Navigation attitude, Transducer Attitude and Slant-Range Distortion. The final mosaics were exported as GeoTIFFs in relative 8-bit (0 – 255) values for use in a GIS.

TIFF Images (Georeferenced):
Project Area Resolution (in meters)
St. Thomas Bank 2
St. John Shelf 2 & 4


Derived Products: Slope, Rugosity

ESRI grids and georeferenced TIFF images of multibeam bathymetry were used to calculate derived products, such as ESRI grids and georeferenced TIFF images of bathymetric slope and rugosity. Slope in degrees was calculated using the ArcGIS Spatial Analyst extension, while rugosity was generated by the Jennesset toolset called the DEM (Digital Elevation Model) Surface Tools. More detailed information is available in the metadata of individual files.

Project Area Resolution (in meters)
  Rugosity Slope
St. Thomas Bank 2 2
St. John Shelf 2, 4, & 8 2, 4, & 8


Underwater Photography & Video Ground Truthing

A remotely operated vehicle (ROV) and an underwater drop camera were used to acquire video and high resolution still photos of the seafloor. The locations of these videos and photos are available for download (below) as point and polyline ESRI shapefiles in NAD83 UTM 20N. These videos and photos will be manually classified by Biogeography Branch scientists, and partitioned into distinct geomorphological structure, biological cover and live coral cover categories.  A map of the seafloor habitats in the Virgin Passage and St. John Shelf will be developed by integrating this ground truthing dataset with the spatially coincident multibeam imagery.

Shapefiles:
Shapefile Type File name
Drop Camera (Point) dropcamera_2011_points
Drop Camera (Polyline) dropcamera_2011_lines
ROV (Point) rov_2011_points
ROV (Polyline) rov_2011_lines

Mission 2010

Project Areas 2009

Multibeam Bathymetry

Multibeam data were collected with a hull-mounted Simrad EM 1002 multibeam SONAR for water depths greater than 75 m, and with a moon pool flange-mounted Reson 7125 multibeam echosounder for areas shallower than 75 m. It was processed by a NOAA contractor using CARIS HIPS/SIPS v.7.0 software. Data was reduced to mean lower low water (MLLW) using final approved tides from NOAA COOPS. All products in the 2010 study sites are in UTM zone 20N, datum NAD83. The products that include data for all the study sites (i.e., 2004-2010) are in UTM zone 19N, datum NAD83. Available bathymetry products include ASCII XYZ text files (comma delimited with easting, northing, and depth in meters), an ESRI Grid for the multi-year unified bathymetry, and georeferenced TIFF images.

Project Area Resolution (in meters)
  ASCII XYZ text files: ESRI Grids: TIFF Images (Georeferenced):
      Bathymetry Sun Illuminated Bathymetry
2004 - 2010 Unified - All Project Areas n/a 10 n/a n/a
2010 Unified - All Project Areas n/a n/a 8 n/a
Virgin Passage 1 n/a 1 1
St. John Shelf 1 & 8 n/a 1 & 8 1 & 8


Multibeam Backscatter

Backscatter data were collected using a Simrad EM 1002 and a Seabat 7125 multibeam echosounder. The data were corrected for geometric and radiometric distortions using Geocoder. In particular, the following corrections were applied when artifacts were evident: AVG Flat, TX Power and RX Gain, Area Correction, Spherical Spreading, Tx and Rx Beam Patterns, Navigation attitude, Transducer Attitude and Slant-Range Distortion. The final mosaics were exported as GeoTIFFs in relative 8-bit (0 – 255) values for use in a GIS.

TIFF Images (Georeferenced):
Project Area Resolution (in meters)
Virgin Passage 1
St. John Shelf 1


Derived Products: Slope, Rugosity

ESRI grids and georeferenced TIFF images of multibeam bathymetry were used to calculate derived products, such as ESRI grids and georeferenced TIFF images of bathymetric slope and rugosity. Slope in degrees was calculated using the ArcGIS Spatial Analyst extension, while rugosity was generated by the ArcGIS toolset called the Benthic Terrain Modeler (BTM). More detailed information is available in the metadata of individual files.

Project Area Resolution (in meters)
  Rugosity Slope
2004 – 2010 Unified - All Project Areas 10 10
2010 Unified - All Project Areas 8 8
Virgin Passage 1 1
St. John Shelf 1 & 8 1 & 8


Underwater Photography & Video Ground Truthing

A remotely operated vehicle (ROV) and an underwater drop camera were used to acquire video and high resolution still photos of the seafloor. The locations of these videos and photos are available for download (below) as point and polyline ESRI shapefiles in NAD83 UTM 20N. These videos and photos will be manually classified by Biogeography Branch scientists, and partitioned into distinct geomorphological structure, biological cover and live coral cover categories.  A map of the seafloor habitats in the Virgin Passage and St. John Shelf will be developed by integrating this ground truthing dataset with the spatially coincident multibeam imagery.

Shapefiles:
Shapefile Type File name
Drop Camera (Point) dropcamera_2010_points
Drop Camera (Polyline) dropcamera_2010_lines
ROV (Point) rov_2010_points
ROV (Polyline) rov_2010_lines

Mission 2009

Project Areas 2009

Multibeam Bathymetry

Multibeam data were collected with a hull-mounted Simrad EM 1002 multibeam SONAR for water depths greater than 75 m, and with a moon pool flange-mounted Reson 7125 multibeam echosounder for areas shallower than 75 m. It was processed by a NOAA contractor using CARIS HIPS/SIPS v.6.1 software. Data will be reduced to mean lower low water (MLLW) using final approved tides from NOAA COOPS. All products limited to 2009 study sites will be in UTM zone 20N, datum NAD83. For those with an expanded extent that includes 2004-2009 sites, the data will be projected in UTM zone 19N, datum NAD83.

Available bathymetry products include ASCII XYZ text files (comma delimited with easting, northing, and depth in meters values), an ESRI Grid for the multi-year unified bathymetry, and georeferenced TIFF images.

Project Area Resolution (in meters)
  ASCII XYZ text files: ESRI Grids: TIFF Images (Georeferenced):
      Bathymetry Sun Illuminated Bathymetry
2004/2005/2006/2007/2008/2009 Unified - All Project Areas n/a 10 n/a n/a
2009 Unified - All Project Areas n/a n/a 2 n/a
South Bank 2 n/a 2 9
El Seco 1 n/a 1 9


Multibeam Backscatter

Backscatter data were collected using a Simrad EM 1002 and a Seabat 7125 multibeam echosounder. The data were corrected for geometric and radiometric distortions using Geocoder. In particular, the following corrections were applied when artifacts were evident: AVG Flat, TX Power and RX Gain, Area Correction, Spherical Spreading, Tx and Rx Beam Patterns, Navigation attitude, Transducer Attitude and Slant-Range Distortion. The final mosaics were exported in dBs (decibels) as GeoTIFFs for use in a GIS.

TIFF Images (Georeferenced):
Project Area Resolution (in meters)
South Bank 3
El Seco .75


Derived Products: Slope, Rugosity

ESRI grids and georeferenced TIFF images of multibeam bathymetry were used to calculate derived products, such as ESRI grids and georeferenced TIFF images of bathymetric slope and rugosity. Slope in degrees was calculated using the ArcGIS Spatial Analyst extension, while rugosity was generated by the ArcGIS toolset called the Benthic Terrain Modeler (BTM). More detailed information is available in the metadata of individual files.

Project Area Resolution (in meters)
  Rugosity Slope
2004/2005/2006/2007/2008/2009 Unified - All Project Areas 10 10
2009 Unified - All Project Areas 2 2
South Bank 2 2
El Seco 1 1


Underwater Photography & Video Ground Truthing

An underwater drop camera, equipped with GPS, lasers, a video camera and a high resolution still camera, was used to acquire seafloor groundtruthing observations. The resulting video data was manually classified by Biogeography Branch scientists into structure, substrate, and biotic cover categories, as well as degree of vertical relief. The classified habitat data is available as an ESRI shapefile in UTM projection, and the original video is available in Windows media video format (.wmv). The point shapefile contains the individual data points and associated habitat information, while the line shapefile merely reflects transect location and contains no individual data points.

Shapefiles:
Shapefile Type File name
Point Available Soon
Line Available Soon

Mission 2008

Project Areas 2008

Multibeam Bathymetry

Multibeam data were collected with a hull-mounted Simrad EM 1002 multibeam SoNAR and was processed by a NOAA contractor using CARIS HIPS/SIPS v.6.1 software. Data was reduced to mean lower low water (MLLW) using final approved tides from NOAA COOPS and are in UTM zone 19N, datum NAD83. The one exception is the Vieques Island area, which is projected in UTM zone 20N. Available bathymetry products include ASCII XYZ text files (comma delimited with easting, northing, and depth in meters), ESRI Grids, and georeferenced TIFF images (color by depth, sun illuminated with azimuth option 1, sun illuminated with azimuth option 2).

Project Area Resolution (in meters)
  ASCII XYZ text files: ESRI Grids: TIFF Images (Georeferenced):
      Sun Illuminated- Azimuth 1 Sun Illuminated- Azimuth 2
2004 - 2008 Unified - All Project Areas n/a 9 n/a n/a
2008 Unified - All Project Areas n/a 9 n/a n/a
Tourmaline Bank 3, 6, 9 Combined 3, 6, 9 Combined 9 9
Mona Island (north) 3, 6, 9 Combined 3, 6, 9 Combined 9 9
Vieques Island 3 3 3 n/a


Multibeam Backscatter

Backscatter was collected with a hull-mounted Simrad EM 1002 multibeam SONAR. The data were corrected for geometric and radiometric distortions using Geocoder 3.2.1. In particular, the following corrections were applied when artifacts were evident: AVG Trend, TX Power and RX Gain, Area Correction, Spreading, Slant-Range and Beam Pattern. The final mosaics were exported in dBs (decibels) as ESRI GRIDs for use in a GIS.

TIFF Images (Georeferenced):
Project Area Resolution (in meters)
Tourmaline Bank 3
Mona Island (north) 3
Vieques Island 3


Derived Products: Slope, Rugosity

ESRI grids of multibeam bathymetry were used to calculate derived products, such as ESRI grids of bathymetric slope and rugosity. Slope in degrees was calculated using the ArcGIS Spatial Analyst extension, while rugosity was generated by the ArcGIS toolset called the Benthic Terrain Modeler (BTM). More detailed information is available in the metadata of individual files.

Project Area Resolution (in meters)
  Rugosity Slope
2004 - 2008 Unified - All Project Areas 10 10
2008 Unified - All Project Areas 9 9
Tourmaline Bank 3, 6, 9, Combined 3, 6, 9, Combined
Mona Island (north) 3, 6, 9, Combined 3, 6, 9, Combined
Vieques Island 3 3


Underwater Photography & Video Ground Truthing

Underwater photos and videos were collected using a remotely operated vehicle (ROV) between 02/25/2008 and 03/08/2008 around Isla de Mona and west of Mayaguez, Puerto Rico in the U.S. Caribbean. The ESRI shapefiles (available for download below) denote their geographic location. These photos and videos will be manually classified into different habitat classes, and integrated with the abiotic data collected by SoNAR (Sound Navigation and Ranging) systems to develop a benthic habitat map for the U.S. Caribbean. Habitat maps describe the location of habitat features (in relation to the shoreline), their physical composition and the types of organisms that colonize them. Fundamentally, habitat maps provide critical information about the extent, health and composition of marine resources, which is vital for communicating information about the distribution and abundance of species to resource managers, scientists and the public.

Shapefiles:
Shapefile Type File name
Point rov_2008_transects_points
Line rov_2008_transects_lines

Mission 2007

Project Areas 2007

Multibeam Bathymetry

Multibeam data was collected with a hull-mounted Simrad EM 1002 and a hull-mounted Reson 8124 multibeam SONAR and were processed by a NOAA contractor using CARIS HIPS/SIPS v.6.1 software. Data will be reduced to mean lower low water (MLLW) using final approved tides from NOAA COOPS and will be in UTM zones 19, datum NAD83.

Available bathymetry products include ESRI Grids, and georeferenced TIFF images (sun illuminated with azimuth option 1, sun illuminated with azimuth option 2).

Project Area Resolution (in meters)
  ASCII XYZ text files: ESRI Grids: TIFF Images (Georeferenced):
      Sun Illuminated- Azimuth 1 Sun Illuminated- Azimuth 2
2004/2005/2006/2007 Unified - All Project Areas n/a 10 n/a n/a
2007 Unified - All Project Areas 10 10 n/a n/a
Bajo de Cico 3, 5, 10 3, 5, 10 3, 5, 10 3, 5, 10
Abrir La Sierra Bank 3, 5, 10 3, 5, 10 3, 5, 10 3, 5, 10
Mona Island (south) 3, 5, 10 3, 5, 10 3, 5, 10 3, 5, 10


Multibeam Backscatter

Backscatter was collected with a hull-mounted Simrad EM 1002 and a hull-mounted Reson 8124 multibeam SONAR. The data (in Simrad and XTF formats) were corrected for geometric and radiometric distortions using Geocoder 3.0. In particular, the following corrections were applied when artifacts were evident: AVG Trend, TX Power and RX Gain, Area Correction, Spreading, Slant-Range and Beam Pattern. The final mosaics were exported in dBs (decibels) as geotiffs for use in a GIS.

TIFF Images (Georeferenced):
Project Area Resolution (in meters)
Bajo de Cico 1
Abrir La Sierra Bank 1
Mona Island (south) 2


Derived Products: Slope, Rugosity

ESRI grids of multibeam bathymetry were used to calculate derived products, such as ESRI grids of bathymetric slope and rugosity. Slope in degrees was calculated using the ArcGIS Spatial Analyst extension, while rugosity was generated by the ArcGIS toolset called the Benthic Terrain Modeler (BTM). More detailed information is available in the metadata of individual files.

Project Area Resolution (in meters)
  Rugosity Slope
2004/2005/2006/2007 Unified - All Project Areas 10 10
2007 Unified - All Project Areas 10 10
Bajo de Cico 3, 5, 10 3, 5, 10
Abrir La Sierra Bank 3, 5, 10 3, 5, 10
Mona Island (south) 3, 5, 10 3, 5, 10


ROV Groundtruthing- Habitat Classifications

An underwater drop camera, equipped with GPS, lasers, a video camera and a high resolution still camera, was used to acquire seafloor groundtruthing observations. The resulting video data was manually classified by Biogeography Branch scientists into structure, substrate, and biotic cover categories, as well as degree of vertical relief. The classified habitat data is available as an ESRI shapefile in UTM projection, and the original video is available in Windows media video format (.wmv). The point shapefile contains the individual data points and associated habitat information, while the line shapefile merely reflects transect location and contains no individual data points.

Shapefiles:
Shapefile Type File name
Point NF-07-06_ROV_Transects_Points.zip
Line Available Soon

Mission 2006

Project Areas (2006)

Multibeam Bathymetry

Multibeam data was collected with a hull-mounted Simrad EM 1002 multibeam sonar and will be processed by a NOAA contractor using CARIS HIPS/SIPS v.6.0 software. Data will be reduced to mean lower low water (MLLW) using final approved tides from NOAA COOPS and will be in UTM zones 19 and 20, datum NAD83.

Available bathymetry products include ASCII XYZ text files (comma delimited with easting, northing, and depth in meters values), ESRI Grids, and georeferenced TIFF images (color by depth, sun illuminated with azimuth option 1, sun illuminated with azimuth option 2).

Project Area Resolution (in meters)
  ASCII XYZ text files: ESRI Grids: TIFF Images (Georeferenced):
      Color By Depth Sun Illuminated- Azimuth 45 Sun Illuminated- Azimuth 315 Sun Illuminated- Azimuth 225
2004/2005/2006 Unified- All Project Areas 10 10 10 n/a n/a n/a
2006 Unified - All Project Areas 10 10 10 n/a n/a n/a
Buck Island- NPS Monument (St. Croix) 3 3 2 10 10 n/a
La Parguera (Puerto Rico) 3 3 2 10 n/a 10


Multibeam Backscatter

Backscatter was collected with a hull-mounted Simrad EM 1002 multibeam sonar. The data (in Simrad format) were corrected for geometric and radiometric distortions using Geocoder 2.8. In particular, the following corrections were applied when artifacts were evident: AVG Trend, TX Power and RX Gain, Area Correction, Spreading, Slant-Range and Beam Pattern. The final mosaics were exported in dBs (decibels) as geotiffs for use in a GIS.

TIFF Images (Georeferenced):
Project Area Resolution (in meters)
2006 Unified- All Project Areas 3
Buck Island- NPS Monument (St. Croix) 3
La Parguera ( Puerto Rico) 3


Derived Products: Slope, Rugosity

ESRI grids of multibeam bathymetry were used to calculate derived products, such as ESRI grids of bathymetric slope and rugosity. Slope in degrees was calculated using the ArcGIS Spatial Analyst extension, while rugosity was generated by the ArcGIS toolset known as the Benthic Terrain Modeler (BTM). More detailed information is available in the metadata of individual files.

Project Area Resolution (in meters)
  Rugosity Slope
2004/2005/2006 Unified- All Project Areas 10 10
2006 Unified - All Project Areas 10 10
Buck Island- NPS Monument (St. Croix) 3 3
La Parguera (Puerto Rico) 3 3


ROV Groundtruthing- Habitat Classifications

A Seaeye Falcon Remotely Operated Vehicle (ROV), run by SeaVision Marine Services, with an attached underwater video camera was used to acquire seafloor groundtruthing observations. The resulting video data was manually classified by Biogeography Branch scientists into structure, substrate, and biotic cover categories, as well as degree of vertical relief. The classified habitat data is available as an ESRI shapefile in UTM projection, and the original video is available in Windows media video format (.wmv). The point shapefile contains the individual data points and associated habitat information, while the line shapefile merely reflects transect location and contains no individual data points. For a full description of the video classification methodology, download this summary of 2006 ROV Video Classification Methodology.

Shapefiles:
Shapefile Type File name
Point NF-06-03_ROV_Transects_Points
Line NF-06-03_ROV_Transects_Lines


LiDAR Bathymetry & Reflectivity

These images were collected in southwestern Puerto Rico between 4/7/2006 and 5/15/2006 using a LiDAR (Light Detection and Ranging) ADS Mk II Airborne System. The 900 Hertz (1064 nm) A Nd: Yag laser acquired 4x4 meter spot spacing and 200% seabed coverage. In total, 265 square nautical miles of LiDAR were collected between -20 m (topographic) and up to 50 m (depth). The spatial resolution of the bathymetric surface is 4 meters. The spatial resolution of the reflectivity surface is 5 meters. Please see the DAPR, Reflectivity Descriptive Report and the dataset metadata files for more details.

TIFF Images (Georeferenced)
Project Area Resolution (in meters)
  Bathymetry Reflectivity
Southwest Puerto Rico 4 5

Mission 2005

Project Areas (2005)

Multibeam Bathymetry

Multibeam data was collected with a pole-mounted Reson 8101 multibeam sonar and processed by a NOAA contractor using CARIS HIPS/SIPS v.5.4 software. Data has been reduced to mean lower low water (MLLW) using final approved tides from NOAA COOPS and are in UTM zone 20, datum WGS84.

Available bathymetry products include ASCII XYZ text files (comma delimited with easting, northing, and depth in meters values), ESRI Grids, and georeferenced TIFF images (color by depth, sun illuminated with azimuth 45, sun illuminated with azimuth 135).

Project Area Resolution (in meters)
  ASCII XYZ
text files
ESRI Grids TIFF Images (Georeferenced)
      Color By Depth Sun Illuminated- Azimuth 45 Sun Illuminated- Azimuth 135
2004/2005 Unified- All Project Areas 5 5 5 n/a n/a
2005 Unified - All Project Areas 2 2 2 n/a n/a
NPS Inshore (St. John) 1 1 1 1 1
NPS Offshore (St. John) 2 2 2 2 2
Buck Channel (St. Croix) 1 1 1 1 1
Salt River (St. Croix) 2 2 2 2 2
Grammanik Bank 2 2 2 2 2
Mid Shelf Reef (MSR) 1 1 1 1 1


Multibeam Backscatter

Backscatter was collected with a pole-mounted Reson 8101 multibeam sonar. The data (in Generic Sensor Format) from Grammanik Bank and the Mid Shelf Reef were processed by the University of Hawaii's Hawaii Mapping Research Group (HMRG) using the HAWAII MR1 Sidescan Sonar Software Suite. The data were corrected for angle varying gain, transmit power and pulse width. Electronic and acoustic noise, such as striping due to across track variations in amplitude and speckling due to transducer motion, were removed.

The data (in Generic Sensor Format) from Salt River and the Buck Channel, St. Croix were corrected for geometric and radiometric distortions using Geocoder 2.8. In particular, the following corrections were applied when artifacts were evident: AVG Trend, TX Power and RX Gain, Area Correction, Spreading, Slant-Range and Beam Pattern. The final mosaics for all areas were exported as geotiffs for use in a GIS.

TIFF Images (Georeferenced):
Project Area Resolution (in meters)
Buck Channel (St. Croix) 1
Salt River (St. Croix) 2
Grammanik Bank (East) .5
Grammanik Bank (West) .5
Mid Shelf Reef .5
NPS Inshore (St. John) 1
NPS Offshore (St. John) 1


Derived Products: Slope, Rugosity

ESRI grids of multibeam bathymetry were used to calculate derived products, such as ESRI grids of bathymetric slope and rugosity. Slope in degrees was calculated using the ArcGIS Spatial Analyst extension, while rugosity was generated by the ArcGIS toolset known as the Benthic Terrain Modeler (BTM). More detailed information is available in the metadata of individual files.

 
Project Area Resolution (in meters)
  Rugosity Slope
2005 Unified - All Project Areas 5 5
NPS Inshore ( St. John ) 1 1
NPS Offshore ( St. John ) 2 2
Buck Channel ( St. Croix ) 1 1
Salt River ( St. Croix ) 2 2
Grammanik Bank 2 2
Mid Shelf Reef (MSR) 1 1


ROV Groundtruthing- Habitat Classifications

A Phantom S2 Remotely Operated Vehicle (ROV) with an attached underwater video camera was used to acquire seafloor groundtruthing observations. The resulting video data was manually classified by Biogeography Branch scientists, at 10 second interval test locations, into structure, substrate, and biotic cover categories, as well as degree of vertical relief. The classified habitat data is available as an ESRI shapefile in UTM projection. The point shapefile contains the individual data points and associated habitat information, while the line shapefile merely reflects transect location and contains no individual data points. For a full description of the video classification methodology, download this summary of 2005 ROV Video Classification Methodology.

Shapefiles:
Shapefile Type File name
Point NF-05-05_ROV_Transects_Points
Line NF-05-05_ROV_Transects_Lines

Mission 2004

All data products are organized by island project area -St. Croix ( Buck Island ), St. Thomas, and St. John. The original full resolution dataset in raw XTF format, along with the appropriate correctors, is archived at the National Geophysical Data Center (NGDC).The following deliverables are available for download in zip format:

Project Areas (2004)

Multibeam Bathymetry

Multibeam data was collected with a pole-mounted Reson 8101 multibeam sonar and processed by a NOAA contractor using CARIS HIPS/SIPS v.5.4 software. Data has been reduced to mean lower low water (MLLW) using final approved tides from NOAA COOPS and are in UTM zone 20, datum WGS84. There is an irregular artifact (averaging 0.5m high) in the dataset.

Available bathymetry products include ASCII XYZ text files (comma delimited with values of easting, northing, and depth in meters), ESRI Grids, georeferenced TIFF images (color by depth, sun illuminated with azimuth 225, sun illuminated with azimuth 315), and non-georeferenced JPEG sample graphics. Due to the large size of the St. John project area, the 1m resolution XYZ files and ESRI Grids for St. John have been subdivided into four smaller areas which must be downloaded separately. The component project areas, named 1-4 from west to east, are shown together in this Overview graphic for reference.

 
Project Area Resolution (in meters) Bathymetry DTM Backscatter Mosaic
  ASCII XYZ text files: ESRI Grids: TIFF Images (Georeferenced): Sample JPEG Graphics (Non-georeferenced):
      Color by Depth Sun Illuminated-
Azimuth 225
Sun Illuminated-
Azimuth 315
   
St. Croix 1 1 5 5 5 STC Bathymetry Sample STC Backscatter Sample
St. John 1 1 5 5 5 STJ Bathymetry Sample STJ Backscatter Sample
St. Thomas 1 1 5 5 5 STT Bathymetry Sample STT Backscatter Sample


Multibeam Backscatter

Backscatter was collected with a pole-mounted Reson 8101 multibeam sonar. The data (in Generic Sensor Format) were corrected for geometric and radiometric distortions using Geocoder 2.7. In particular, the following corrections were applied when artifacts were evident: AVG Trend, TX Power and RX Gain, Area Correction, Spreading, Slant-Range and Beam Pattern. The final mosaics were exported as geotiffs for use in a GIS.

TIFF Images (Georeferenced):
Project Area Resolution (in meters)
St. Croix 0.5
St. John 0.5
St. Thomas 0.5


Derived Products: Slope, Rugosity

ESRI grids of multibeam bathymetry were used to calculate derived products, such as ESRI grids of bathymetric slope and rugosity. Slope in degrees was calculated using the ArcGIS Spatial Analyst extension, while rugosity was generated by the ArcGIS toolset known as the Benthic Terrain Modeler (BTM). More detailed information is available in the metadata of individual files.

 
Project Area Resolution (in meters)
  Rugosity: Slope:
2004 Unified- All Project Areas n/a n/a
St. Croix 1 1
St. John 1 1
St. Thomas 1 1


ROV Groundtruthing- Habitat Classifications

A Phantom S2 Remotely Operated Vehicle (ROV) with an attached underwater video camera was used to acquire seafloor groundtruthing observations. The resulting video data was manually classified by Biogeography Branch scientists, at 10 second interval test locations, into structure, substrate, and biotic cover categories, as well as degree of vertical relief. The classified habitat data is available as an ESRI shapefile in UTM projection. The point shapefile contains the individual data points and associated habitat information, while the line shapefile merely reflects transect location and contains no individual data points. For a full description of the video classification methodology, download this summary of 2005 ROV Video Classification Methodology.

Shapefiles:
Shapefile Type File name
Point minibat_2004_points
Line minibat_2004_lines