NOAA TIFF Image - 4m Sun Illuminated Bathymetry for Red Snapper Research Areas in the South Atlantic Bight, 2010

This dataset contains unified Sun Illuminated Bathymetry GeoTiffs with 4x4 meter cell resolution describing the topography of 15 areas along the shelf edge off the South Atlantic Bight where NOAA South East Fisheries Independent Survey (SEFIS) are conducting research on Red Snapper (lutjanus campechanus). The multibeam data covers a total of 232 sq km and was collected in 2010 by the NOAA Ship Nancy Foster with a hull-mounted Kongsberg Simrad EM 1002 multibeam echo sounder (95 kHz). It was processed by NOAA's NOS/NCCOS/CCMA Biogeography Branch using CARIS HIPS 7.1 software. Data has all correctors applied (attitude, sound velocity) and has been reduced to mean lower low water (MLLW) using final approved tides and zoning from NOAA COOPS. The processed CARIS data was used to generate a CARIS BASE surface using CUBE. The CARIS export option "BASE Surface to ASCII" was then used to create a GeoTiff of the priority areas in ArcGIS 10. Sun Illuminated Bathymetry was derived from this surface using the hillshade function in ArcGIS Spatial Analyst.

The spatial products developed in this project will provide ocean managers and researchers with essential fish habitat information.

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These data were prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Although all data have been used by NOAA, no warranty, expressed or implied, is made by NOAA as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by NOAA in the use of these data or related materials.

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Note: NOT TO BE USED FOR NAVIGATION. These data were prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Although all data have been used by NOAA, no warranty, expressed or implied, is made by NOAA as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by NOAA in the use of these data or related materials.

Microsoft Windows 7; ESRI ArcCatalog 10.0

This GeoTiff is sourced from a CARIS gridded dataset. The original full-resolution multibeam data was used to create a downsampled uniform-resolution CARIS BASE (Bathymetry Associated with Statistical Error) surface grid with a best depth component. The downsampled grid nodes from that depth surface were then exported and used to generate a grid in ArcGIS. Some positional shifts may have occurred between the original data points and the transformed grid.

As the survey was not conducted to meet IHO standards, all users should independently analyze the dataset according to their own needs and standards to determine data usability.