JEdI DISC DESCRIPTIONS By David Traudt Each of the three discs has a unique file structure and different datasets. It is important to note that each disc has a "README.1ST" which should be read, printed, and filed for reference. There is some important user information and errata notices found in \WAITER\GETSTR.TXT which can be easily accessed by choosing Welcome - Getting Started from the JEdI Main Menu. "A" DISC The following directories on the A Disc contain image files: \YELLOSTN Two new Yellowstone image files are included on this disc to augment those on "C" Disc. These two are a contrast enhanced version of the NAPP aerial photograph (NAPP2.IMG) and a digitized oblique aerial photograph of the Old Faithful geyser basin area (OBLIQUE.IMG). \SMMR About nine years of Antarctic sea ice concentration. This data is easier to use than the files on "C" Disc because label files are included in the header files. \GLORIA Images of quad thirteen in the Gulf of Mexico and the Monterey Canyon. There are three software packages containing text files: \TEXTWARE A compilation of earth-science data sets from NOAA, NASA, and USGS. \DP Background JEdI project documents and a machine readable version of the 1990 Teacher Activities Book. \GSSEARCH Contains the Compendium of CD-ROM's. The directory \SPECTRA contains a spectral analyses of plants and minerals. Two directories, \DOSSOFT and \MACSOFT, provide DOS and Mac users with software products to explore the images provided on the three JEdI discs. Software for displaying the images on the Mac are all found on "A" Disc. Only the latest version of IMDISP for DOS users is found on "A" Disc. Other DOS image display programs can be found on the "B" Disc under the \DOS directory. "B" DISC The data on this disc are organized into five first-level subdirectories. A brief description of the second-level and/or third-level subdirectories is provided here as an "introduction" to assist you in your exploration of this disc. Please remember that the README.1ST file has a complete description as well as other information vital to the operation of these discs. \ASTRONMY There are two subdirectories here; \RNGC The Revised New Galactic Catalogue of Nonstellar Astronomical Objects; \YALE_BSC Yale Catalogue of Bright Stars (or Bright Star Catalog). \DOS This subdirectory contains several useful executable software programs for DOS computers. \IDRISI This subdirectory contains a subset of the Idrisi program and raster Geographic Information System (GIS). \IMDISP The raster image display program from California Institute of Technology, Jet Propulsion Laboratory, Planetary Data System (PDS). \PALETTE Contains all of the color palette files for use with the NASA Voyager imagery. \MIPS Collection of raster image processing programs (PCMIPS). \UTILS Several utility programs that are useful in working with various raster image files, plus PDS's image decompression program. \IMAGERY There are four subdirectories in the \IMAGERY subdirectory. They are: \COMETS Selected images and data from NASA CD-ROM's resulting from "encounters" with two comets, Halley and Giacobini-Zinner. \PLANETS Five subdirectories of selected NASA Voyager I & II imagery of the planets Jupiter, Saturn, Uranus, Neptune and some of their moons. \PROGRAMS Software programs for the DOS and Macintosh platforms. \SOFTWARE These folders contain many useful executable software programs for Macintosh computers. \DOS This subdirectory contains datasets that basically have data specific software accompanying them for access/analysis. For DOS computers only, the following are offered \GNA A subset of the NOAA National Geophysical Data Center's Geophysics of North America CD-ROM and software. \NODC Six subdirectories of a sampling of Pacific Ocean temperature and salinity readings. \SEISMIC A sample of earthquake event data, including the recent Loma Prieta earthquake. \SUN Demonstration imagery of solar flare activity from NOAA. \TOMS A small subset collected by NASA of the Total Ozone Mapping Spectrometer. \MAC Our intention was to balance this disc between the two computer platforms, DOS and Macintosh. Unfortunately, technical reasons and/or storage limitations require the placement of most of the Macintosh programs on JEdI "A" Disc. "C" DISC The datasets on this disc are intended for use with the software, i. e. IMDISP, the most current version is provided on JEdI "A" Disc in the directory \DOSSOFT. \YLWSTN Images of the Yellowstone area in the following subdirectories \AVHRR The Advanced Very High Resolution Radiometer is carried on NOAA's Nimbus 6-11 satellites. The imagery presented on this disc covers the northern Rocky Mountain region surrounding the Yellowstone ecosystem. \GISFILS Although these files are not remotely sensed datasets, you will find them very useful in a Geographic Information System "GIS" context by overlaying the remotely sensed imagery with these files to aid in interpreting the imagery. \NAPP This file is a digitized National Aerial Photography Program scene of the Old Faithful Geyser region of Yellowstone National Park, Wyoming, flown on September 1, 1989. \SLAR Side Looking Airborne Radar imagery is particularly desirable for observing subtle crustal lineaments (such as earthquake faults) that are not visible to other sensors. \SEVERITY This file is a burn severity land classification by EROS Data Center scientists and National Park Service personnel on the basis of the analysis and interpretation of Thematic Mapper (TM) imagery collected in October 1988. \TM Thematic Mapper is a sensor found on the Landsat 4 and 5 satellites. Imagery from this sensor is particularly useful for a variety of earth science and natural resources management purposes. \ANTARCTC The three subdirectories in the Antarctic file are: \AVHRR Three digital files presented here are a mosaic of 23 NOAA AVHRR scenes displaying the entire Antarctic continent. \MSS The Multi Spectral Scanner is found on the Landsat 1-5 satellites. The two scenes on this disc are included to give you a "closer look" at two areas at and near the U.S. McMurdo Sound base. \SMMR The Scanning Multichannel Microwave Radiometer imagery on this disc is from NOAA's Nimbus 7 satellite. These images provide excellent viewing of sea ice concentrations.