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


GIS Data Catalog

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GIS Data Catalog

This report contains several data layers (or themes) that show bathymetric and sidescan sonar imagery of Rhode Island Sound. GeoTIFFs produced from grids of the NOAA sidescan sonar and bathymetric surveys are provided in geographic and universal transverse mercator projections, along with the bathymetry grids. Available vector data consists of polygon data layers that provide the coastline for the Rhode Island Sound GIS project area, interpretive data layers, and an outline of the study area.

Data layers are provided with geographic coordinates to allow the data to be integrated into a Geographic Information System (GIS). Data layers archived here do not require additional processing to be utilized within the Environmental Systems Research Institute's (ESRI) ArcView and ArcGIS software. This does not mean that a user will not wish to do additional processing, especially if utilizing a different GIS software package or spheroid, but that it is not necessary to do additional processing simply to utilize the data in its minimum archive format.

For those who do not have the ESRI software or a compatible GIS data browser available on their computer, a free viewer, ArcExplorer, is available from ESRI. The key functionality of ArcExplorer is the viewing of spatial data. The user will need to add the selected data layers by using ArcExplorer's add data button.

Each GIS data layer from this publication is cataloged below for easy access. The individual data layers are described below and include the GeoTIFF, grid, or shapefile name (e.g. h11321_45m_geo) which is linked to a browse graphic showing the data layer extent and coverage. Selecting the data layer name will result in the browse graphic being displayed in a separate browser window.

When accessing this report from the DVD-ROM, the top level of the report contains an ArcView project file (h11321.apr) created in ArcView 3.3 and an ESRI ArcMap document (h11321.mxd) created in ArcMap 9.2, but saved as an ArcMap 9.0/9.1 document to make it accessable in older versions.

Federal Geographic Data Committee (FGDC) metadata for the individual data layers is 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 the ESRI shapefile for each data layer is also provided. Compressed downloadable files were created using the Windows program WINZIP v9.0. For those users who do not have software capable of uncompressing the archived zip files, they may obtain a free version of the software from Winzip Computing, Inc. or Pkware, Inc.

Sidescan Sonar Imagery

Data Layer Name and Description Metadata Files
h11321_1m_sss_geo_str - stretched sidescan sonar imagery of NOAA survey H11321 (geographic) HTML
FAQ
txt
zip
h11321_1m_sss_geo - composite sidescan sonar imagery of NOAA survey H11321 (geographic) HTML
FAQ
txt
zip
h11321_1m_sss_utm_str - stretched sidescan sonar imagery of NOAA survey H11321 (UTM zone 19, NAD83 spheroid) HTML
FAQ
txt
zip
h11321_1m_sss_utm - composite sidescan sonar imagery of NOAA survey H11321 (UTM zone 19, NAD83 spheroid) HTML
FAQ
txt
zip


Bathymetric Imagery

Data Layer Name and Description Metadata Files
h11321_geo.tif - representation of bathymetric data from NOAA survey H11321 (geographic) HTML
FAQ
txt
zip
h11321_utm.tif - representation of bathymetric data from NOAA survey H11321 (UTM zone 19, NAD83 spheroid) HTML
FAQ
txt
zip


Bathymetric Grids

Data Layer Name and Description Metadata Files
h11321_geo45m - bathymetric grid of NOAA survey H11321 (geographic) HTML
FAQ
txt
zip
h11321_utm45m - bathymetric grid of NOAA survey H11321 (UTM zone 19, NAD83 spheroid) HTML
FAQ
txt
zip
h11321_1m_utm19nad83.txt - space delimited ASCII text file of the bathymetric grid of NOAA survey H11321 (UTM zone 19, NAD83 spheroid) HTML
FAQ
txt
zip


Interpretive Data

Data Layer Name and Description Metadata Files
h11321environs - interpretation of the sedimentary environments in NOAA survey H11321 (geographic) HTML
FAQ
txt
zip
h11321interp - interpretation of the sidescan sonar and bathymetric imagery from NOAA survey H11321 (geographic) HTML
FAQ
txt
zip


Basemap 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) HTML
FAQ
txt
zip
h11321outline - outline of sidescan sonar imagery from NOAA Survey H11321 (geographic) HTML
FAQ
txt
zip

Links

ESRI: http://www.esri.com
Winzip Computing, Inc.: http://www.winzip.com
Pkware, Inc.: http://www.pkware.com
FGDC: http://www.fgdc.gov

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This page last modified on Monday, 24-Nov-2014 12:30:06 EST