This report contains several data layers with geographic coordinates that can be used to create views of the Long Island Sound region within a Geographic Information System (GIS). A GIS is defined as a system of hardware and software to support the display, manipulation, and analysis of spatial data for mapping and complex data solving. Geotiffs and grids produced during NOAA multibeam bathymetric survey H11255 are provided in geographic and universal transverse mercator. Available vector data consists of a polygon data layer, nos80k that provides the coastline for the Long Island Sound GIS project area. This integrated package provides researchers the ability to integrate, analyze and map the various datasets to help with economic and social policy-making decisions regarding the environment.
Data layers contained within this report should not require additional processing to be utilized by the Environmental Systems Research Institute's (ESRI) ArcView and ArcGIS software. Additional processing may be done if utilizing a different GIS software package or spheroid, but additional processing is not necessary to use the data in its minimum archive format.
For those who do not have ESRI software or a compatible GIS data browser available on their computer, a free viewer, ArcExplorer, is available from ESRI here. Please note that the ArcExplorer software is limited to the Microsoft Windows operating systems. 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. h11255_geo_2mbathy.tif) 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.
Federal Geographic Data Committee (FGDC) metadata for the individual data layers is provided in a text version. 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 ArcView shapefile for each data layer is also provided. Compressed downloadable files were created using the Windows program WINZIP v8.0. Users who do not have software capable of uncompressing the archived zip files, may obtain a free version of the software from Winzip Computing, Inc. or Pkware, Inc.
Multibeam Bathymetric Imagery
Multibeam Bathymetry Grids