Most of the data on this disk are stored either
in raster or vector forms. Raster data are stored in geotiff format
to ease importing of the raster imagery into various GIS software and/or
image analysis software. The vector data consist of line information
(bathymetry contour lines), point data (sample location and point attribute
information), and polygon coverages as geologic interpretive overlays.
These data layers are stored in ESRI's ArcView shapefile format.
In addition, to the ArcView shapefiles, the bathymetry contours and sample
information are stored in simple ASCII files.
view and interact with the archived data sets, the user should have one
of the following Environmental Systems Research Institute's (ESRI) software
For more information regarding the ESRI Arc/Info
and ArcView programs and other available software, visit the ESRI
home page at www.esri.com.
However, due to differences in how common browsers work within different operating systems this goal was not easily attained. What we discovered was that in the Windows world you could open an ArcView project file with Netscape but not with Internet Explorer and vice-a-versa for ArcExplorer. Thus, we have supplied project files tailored for each of the programs and web browsers. Please note that this is only relative to opening the project file from within a specific web browser and these notes apply to your default web browser defined on the computer system being used. Assuming the proper application software is properly installed on your computer, either project file may be opened using the application software itself by double-clicking the project name in the Windows Explorer. The project files may be found in the data/ directory at the top level of this CD-ROM.
There are three complete project files available. Each file contains
a view with all the available data coverages. Due to restrictions
in ArcExplorer though, the views are in latitude and longitude and are
somewhat distorted. The ArcView projects are all referenced to a
UTM zone 17 coordinate system.
|arcvieww.apr||ArcView project file to be used within Netscape for Windows|
|arcviewu.apr||ArcView project file to be used within Netscape for Unix. This project file assumes the CD-ROM has been mounted to the directory /cdrom.|
|arcexplr.aep||ArcExplorer project file to be used within Internet Explorer|
|Description||ArcView project file||ArcExplorer project file|
|Application||C:\your\path\to\arcview.exe %s||C:\your\path\to\arcexplorer.exe %s|
If you are setting up ArcView to work with a UNIX
browser, please use the UNIX directory notation (i.e. /your/path/to/ArcView).
Also, you must include the %s after the ArcView or ArcExplorer.
This will allow the programs to automatically open the selected hyperlink
file. When completed, selecting the Geologic Discussion hyperlink from
the web browser will launch the appropriate program and allow interactive
manipulation of the data layers for that specific geologic discussion.
Browse graphics of the vector data layers are also available for viewing and are displayed over the sidescan sonar mosaic of the area. The browse graphics are stored as GIF formatted images and should display in all WWW browsers. Links to these images are available from the Data Page and may be viewed by selecting browse graphic link below the layer name in the vector overlay tables as well as from the associated metadata page for the individual coverage.
U.S. Department of the Interior, U.S. Geological Survey
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Last modified: 22:59:02 Thu 10 Jan 2013
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