Resource Description: 2002 Oculina Banks Multi-beam and Sidescan Bathymetry
University of North Carolina at Wilmington, 20021231, Oculina Banks Bathymetry 2002 from Multi-beam and Sidescan Sonar Surveys (NODC Accession 0090252): NOAA Undersea Research Center at UNCW, Wilmington, NC.This is part of the following larger work.
University of North Carolina at Wilmington, 20021231, Oculina Banks Geographic Information System: National Undersea Research Center at UNCW, Wilmington, NC.
This is a Raster data set. It contains the following raster data types:
Planar coordinates are encoded using Row and Column
Abscissae (x-coordinates) are specified to the nearest 5.0
Ordinates (y-coordinates) are specified to the nearest 5.0
Planar coordinates are specified in Meters
The horizontal datum used is North American Datum of 1927.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.4.
The flattening of the ellipsoid used is 1/294.98.
The goal of OGIS is to provide interactive access to a variety of data sources that characterize fish populations and habitat condition in the OHAPC, for use by fisheries managers, scientists and the general public. The 2002 multi-beam survey provides the highest resolution bathymetric map ever acoustically recorded in the OHAPC. Survey products will be used to 1) assess topographic and habitat change in the OHAPC over time, and 2) accurately position past in situ underwater observations, and guide future sampling and dives, e.g., grab samples, ROV transects, and submersible dives.
The multi-beam system was mated to a Differential GPS unit, DMSO 5 TSS motion sensor (quantified heave, pitch and roll), and a SG Brown gyrocompass (measures yaw). HYPACK navigation system was used to maintain vessel course throughout the survey. Sensor data were compiled in ISIS Shipboard Data Acquisition and Image Processing System and initially logged to .xtf data files. Files were post-processed using CARIS software to remove outliers, correct for sound velocity and tidal stage.
Person who carried out this activity:
0.05% of water depth
The initial surveys produced an extremely large dataset (62 CDs) of raw data in Caris' cross-track format. To create the geotifs presented in the OGIS, this data set was reduced by post-survey processing including: corrections for sound velocity and tidal stage, removal of outliers and data gaps, and calculation and assignment of mean values for 3m X 3m cells throughout the survey area.
Data are believed to be logically consistent, though no tests were performed.
Are there legal restrictions on access or use of the data?
- There are no constraints for use of geotif files included on the OGIS CD, which is available from the P.O.C.
- Use_Constraints: Not for legal use
These data not intended for navigational purposes.
Although these data have been used by NOAA, these data and information are provided with the understanding that they are not guaranteed to be useable, timely, accurate, or complete. Users are cautioned to consider carefully the provisional nature of these data and information before using them for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Conclusions drawn from, or actions undertaken on the basis of such data and information are the sole responsibility of the user. Neither the U.S. Government nor any agency thereof, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any data, software, information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights.
Trade, firm, or product names and other references to non-USGS products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by UNCW, NOAA, the US Department of Commerce, or the U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy.
Disclaimer - NOAA makes no warranty regarding these data, expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA and NODC cannot assume liability for any damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system.
Two ZIP files of ASCII bathymetry data.
Sample of bathymetry XYZ ASCII file Longitude, Latitude, Elevation -86.57406,30.06655,-48.497 in format ASCII
|Data format:||Two files of geoTIFF bathymetry data. in format geoTIFF|