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U.S. Geological Survey Open-File Report 2008-1181

Sidescan-Sonar Imagery and Surficial Geologic Interpretations of the Sea Floor in Western Rhode Island Sound


Geographic Information System Data Catalog

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GIS Data Catalog

This report contains both raster and vector data from western Rhode Island Sound. The raster data consist of bathymetry (available in both color-hillshade relief GeoTIFF images and Environmental Systems Research Institute's (ESRI) binary grids) and sidescan-sonar GeoTIFFs. The vector data are in ESRI shapefile format and include a NOAA polygon shoreline, a polygon outline of the study area, and two interpretive polygon layers. The raster data are provided in both a Geographic Coordinate System and a Universal Transverse Mercator (UTM) zone 19 projection, whereas the vector data are available in a Geographic Coordinate System only. In addition, a text file containing the original NOAA bathymetry data is made available (positions are UTM, zone 19). Geographic data layers are provided in the WGS84 datum and UTM data layers are provided in the NAD83 datum in order to be consistent with the preferences of collaborators.

When accessing this report from the DVD-ROM, the top level of the report contains an ArcView 3.3 project file (h11322.apr) and an ESRI ArcMap document (h11322.mxd) created in ArcMap 9.2, but saved as an ArcMap 9.0/9.1 document to make it accessible in older versions. These files contain the data layers of this report already loaded. If the user does not have access to the ESRI software or a compatible GIS data browser, a free viewer, ArcExplorer, is available from ESRI (www.esri.com).

Each GIS data layer from this publication is cataloged below for easy access. The individual data-layer name is linked to a browse graphic which will open a separate browser window displaying an image of the data layer. Federal Geographic Data Committee (FGDC) metadata for the individual data layers are provided in HTML, FAQ HTML, and text versions. Selecting associated metadata files from the table below will open the information in a new browser window.

A 'Zip' compressed, downloadable archive file containing the components of each data layer is also provided. Compressed downloadable files were created using the Windows program WINZIP v9.0. Users who do not have software capable of uncompressing the archived Zip files can obtain a free version of the software from Winzip Computing, Inc., or Pkware, Inc.

Sidescan-Sonar Imagery

Data-Layer Name and Description Metadata Files
h11322_1m_sss_geo_str - stretched sidescan-sonar imagery of NOAA survey H11322 (geographic, WGS84) HTML
FAQ
txt

Zip
(43MB)

h11322_1m_sss_geo - composite sidescan-sonar imagery of NOAA survey H11322 (geographic, WGS84) HTML
FAQ
txt

Zip
(43MB)

h11322_1m_sss_utm_str - stretched sidescan-sonar imagery of NOAA survey H11322 (UTM zone 19, NAD83) HTML
FAQ
txt

Zip
(34MB)

h11322_1m_sss_utm - composite sidescan-sonar imagery of NOAA survey H11322 (UTM zone 19, NAD83) HTML
FAQ
txt

Zip
(34MB)



Bathymetric Imagery

Data-Layer Name and Description Metadata Files
h11322_geo.tif - representation of bathymetric data from NOAA survey H11322 (geographic, WGS84) HTML
FAQ
txt
Zip
h11322_utm.tif - representation of bathymetric data from NOAA survey H11322 (UTM zone 19, NAD83) HTML
FAQ
txt
Zip


Bathymetric Grids

Data-Layer Name and Description Metadata Files
h11322_geo45m - bathymetric grid of NOAA survey H11322 (geographic, WGS84) HTML
FAQ
txt
Zip
h11322_utm45m - bathymetric grid of NOAA survey H11322 (UTM zone 19, NAD83) HTML
FAQ
txt
Zip
h11322_1m_utm19nad83.txt - space-delimited ASCII text file of the bathymetric grid of NOAA survey H11322 (UTM zone 19, NAD83) HTML
FAQ
txt

Zip
(19MB)



Interpretive Data

Data-Layer Name and Description Metadata Files
h11322environs - interpretation of the sedimentary environments in NOAA survey H11322 (geographic, WGS84) HTML
FAQ
txt
Zip
h11322interp - interpretation of the sidescan-sonar and bathymetric imagery from NOAA survey H11322 (geographic, WGS84) HTML
FAQ
txt
Zip


Base-Map Data

Data-Layer Name and Description Metadata Files
nos80k_84 - medium-resolution digital vector U.S. shoreline shapefile for the Rhode Island Sound GIS project area (geographic, WGS84) HTML
FAQ
txt
Zip
h11322outline - outline of sidescan-sonar imagery from NOAA Survey H11322 (geographic, WGS84) HTML
FAQ
txt
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