Data Format and Projection

Vector data: Environmental Systems Research Institute (ESRI) shapefiles, Geographic Coordinate System World Geodetic System 1984 (WGS84).

Raster data: ESRI Grids and georeferenced TIFF images, in meters in Unversal Transverse Mercator (UTM), Zone 19N, WGS84 projection.

Metadata

All spatial data are distributed with Federal Geographic Data Committee (FGDC) compliant metadata in xml, txt, and html formats.

Data Access
These GIS data can be accessed via DVD-ROM or the Internet. A single ZIP file can be downloaded (OFR2010_1091.zip, 143 MB), or individual layers may be downloaded from the Data Catalog section below. Data are compatible with several software systems, including the following:

• ESRI ArcGIS (version 8.x or higher)
• ESRI ArcView (version 3.x)
• ESRI ArcGIS Explorer (available at no cost at http://www.esri.com/software/arcgis/explorer/index.htm)
• Many other GIS software systems

Data Organization
The data are organized in the following folders on the DVD-ROM and on the dowloadable ZIP file:

Data Catalog

Vector Data.—Vector data are in shapefile format in geographic coordinates (WGS84). The link in the "Download" column provides access to a Zip file that contains the shapefile.

Layer (metadata)	Description	Preview	Download
RB_BathyBackscatterTrackline	Tracklines for swath bathymetry and backscatter survey		RB_BathyBackscatterTrackline.zip File size: 0.4 MB
RB_BottomPhotos	Locations of bottom photographs		RB_BottomPhotos.zip File size: 0.1 MB
RB_SedimentSamples	Locations of sediment samples		RB_SedimentSamples.zip File size: 0.1 MB
RB_SeismicShot_500	Locations of seismic shotpoints at 500-shot intervals		RB_SeismicShot_500.zip File size: 0.1 MB
RB_SeismicTrackline	Tracklines for seismic profiles		RB_SeismicTrackline.zip File size: 2.3 MB
RB_SVP	Locations of sound velocity profiles		RB_SVP.zip File size: 0.1 MB

Raster Data.—Raster data are in meters in UTM, Zone 19, WGS84 projection. The link in the "Download" column provides access to a Zip file that contains the raster data.

Layer (metadata)	Description	Preview	Download
RB_Backscatter_1m	Interferometric sonar backscatter mosaic, 1-meter pixels (8-bit unsigned TIFF)		RB_Backscatter_1m.zip File size: 5.3 MB
RB_Backscatter_5m	Interferometric sonar backscatter mosaic, 5-meter pixels (8-bit unsigned TIFF)		RB_Backscatter_5m.zip File size: 0.3 MB
RB_Bathy_1m	Bathymetry grid, 1-meter pixels (32-bit floating point ESRI grid)		RB_Bathy_1m.zip File size: 15.2 MB
RB_Bathy_5m	Bathymetry grid, 5-meter pixels (32-bit floating point ESRI grid)		RB_Bathy_5m.zip File size 0.7 MB
RB_BathyShadedRelief_1m	Color-shaded relief image of bathymetry, 1-meter pixels (24-bit unsigned TIFF)		RB_BathyShadedRelief_1m.zip File size 15.5 MB
RB_BathyShadedRelief_5m	Color-shaded relief image of bathymetry, 5-meter pixels (24-bit unsigned TIFF)		RB_BathyShadedRelief_5m.zip File size 0.7 MB

Hyperlinked Images.—JPEG images that can be linked to by GIS features. The link in the "Download" column provides access to a Zip file that contains the JPEG images.

Layer (metadata)	Description	Preview	Download
RB_BottomPhotos_JPG	Bottom photographs		RB_BottomPhotos_JPG.zip File size: 19.7 MB RB_BottomPhotosFullRes_JPG.zip File size: 737 MB
RB_SeismicProfiles_JPG	Seismic reflection profile images		RB_SeismicProfiles_JPG.zip File size: 61.0 MB
RB_SVP_CSV_JPG	Sound velocity profile images		RB_SVP_CSV_JPG.zip File size: 0.6 MB

Navigation Data.—Raw navigation files recorded during survey operations. The link in the "Download" column provides access to a Zip file that contains the raw navigation files.