Marine Geology & Geophysics
Gulf of Mexico GLORIA CD-ROM Data Set
NGDC DATA ANNOUNCEMENT NUMBER: 90-MGG-04
OUT OF STOCK - FOLLOW USGS LINKS BELOW
GLORIA CDROM INFORMATION at the USGS
The National Geophysical Data Center (NGDC) (now the National Centers for Environmental Information (NCEI)) formerly made available long-range sidescan sonar data collected in the Gulf of Mexico by the US Geological Survey with the GLORIA (Geological Long-Range Inclined Asdic) system owned and operated by the British Institute of Oceanographic Sciences. The data base, compiled on a 4 3/4 inch CD-ROM disc, resulted from the joint efforts of the US Geological Survey (USGS), the National Oceanic and Atmospheric Administration (NOAA) and the National Aeronautics and Space Administration (NASA).
The CD-ROM disc contained three sets of imagery data for the Gulf of Mexico Exclusive Economic Zone (EEZ). The data base consisted of (1) 326 files comprising the complete set of "6-hour" raster- image data, (2) 16 files that were created by electronically mosaicking the appropriate 6-hour data files into composite 2- degree area files and (3) 2 additional composite files representing the complete eastern and western halves of the Gulf. There were also bathymetric contour data digitized from NOAA's bathymetric map series at scales of 1:250,000 and 1:1,000,000 that could be overlaid on these images.
In addition, several DOS PC software programs were provided along with a menu-driven system which accessed and displayed the data as well as integrating the software. The help option provided assistance in using the selection programs. Each "6-hour" data file contained summarized information on latitude, longitude, water depth, and the date and time when the data recorded. A notebook describing the data software and selection processes accompanied each GLORIA CD-ROM disc.
The software supplied with the GLORIA CD-ROM required a DOS PC (286 or 386 recommended) with at least 512 KbRAM, EGA OR VGA graphics, and a hard disc. The "6-hour" data files must be unpacked from the CD-ROM to the PC's hard disc before use.
This item is available through the USGS, please see the link above.