Geophysical, Sedimentological, and Photographic Data from the John Day Reservoir, Washington and Oregon: Data Archive and Preliminary Discussion
USGS Open-File 2004-1014
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Table of Contents:
METADATA AND DATA CATALOG
Federal Geographic Data Committee (FGDC) compliant metadata is available for all the data contained on this DVD. The text, HTML, and FAQ versions of the metadata reside in the metadata directory, under a subdirectory appropriate for the data type. The links to these files are provided below. Each dataset has metadata available in several formats. The information contained within each file is the same, just presented differently to help make the information more user friendly. ArcGIS 8.2 compatible XML metadata is stored in the directory with the actual data files.
Shapefiles generally include *.shp, *.shx, and *.dbf files at a minimum. For the sake of brevity, only the filename prefix has been included in the filename designation listed below; extensions have been excluded. All the files necessary to load a shapefile have been compressed into a single WinZip file. Therefore, these shapefiles can be downloaded directly from the DVD, or by clicking on the filename in the data catalog and saving the "zipped" files to a preferred location and uncompressing them. Image and text files can be transferred in the same manner.
Sidescan-sonar mosaic images are available in both the TIFF and MrSid image format. The accompanying world file for each image is necessary to display the image in its appropriate geographic location within a GIS and therefore needs to be downloaded as well. It is recommended that when downloading from the data catalog below, the MrSid image be selected since it is a considerably smaller file.
Clicking on the camera icon will give a preview of the dataset. In most cases this image contains other information to help orient the viewer. For instance, the shoreline graphic also contains the state boundaries for reference. Not every file has a graphic. If two files differ only in format or projection, only one of the files will have a representative image.
For guidance in where to obtain software capable of reading shapefiles, seismic SEG-Y files, and uncompressing zipped files, see the system requirements page.
Seismic-Reflection SEG-Y files (data/segy)
seismic JPEG images (data/seisimages)