WELCOME TO THE "GLOBAL RELIEF CD-ROM" (Original Version 1993, updated June 2005 for online users) (http://www.ngdc.noaa.gov/mgg/fliers/93mgg01.html for CD-ROM) * Produced by: United States Department of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite, Data, and Information Service, National Geophysical Data Center, Marine Geology and Geophysics Division * Author: Dr. Peter W. Sloss MGG Division, Code E/GC3 NOAA-NGDC 325 Broadway Boulder, Colorado 80305-3328 WARNING!!! Twelve years is a long time. Some of the legacy software in this collection of odds and ends is from the days of MS-DOS and Mac OS-6. The ETOPO5 search program "seletopo.exe" has been updated for 32-bit Windows compatibility. We recommend that you look into more modern software to access the data where possible. * Purpose of the Disc: This "Global Relief CD-ROM" disc is intended to consolidate a number of digital data bases which the National Geophysical Data Center has offered for some time only on standard 1/2" mainframe computer tape, as well as several data bases that are presented here for the first time. The data are recorded on this disc in their original format where appropriate, and in easily accessible forms for many types of desktop personal computers and workstations. Also on this disc are a number of digitally produced example images derived from some of the data. The images are compatible with standard desktop publishing software. This disc should make access to the data bases more convenient for most users. Some programming may be required to access some of the data, just as has always been the case for our mainframe and minicomputer data users. * System Requirements: If you got this far, you can at least access the files on the CD- ROM. For executing the software on the CD-ROM, you should have a PC compatible with hard disk and 640Kb RAM, or a Macintosh with hard disk. For the color graphics programs, your PC computer should be appropriately equipped with color display (VGA preferred, EGA will work but is less desirable for imaging). Some of the Mac graphics programs will work with any Macintosh; consult the documentation accompanying the software. (2004 note: OS-X users in Classic mode must use the PPC or "noFPU" programs. Some versions of these Mac programs run only on M680x0 processors with separate floating-point hardware. How quaint.) * General Contents: This disc contains several digital gridded data bases of global topography and bathymetry at various scales, digitized continental coastlines, gridded oceanic gravity anomalies, ocean- floor gazetteers, and digital topographic relief images in a wide variety of formats. Software or program code for PC-DOS, Macintosh, and UNIX workstations is provided to access the major topographic and geographic data bases. Macintosh users will find a special "Mac only" area of the disc devoted to topographic imaging, including software to generate their own full-color relief images. There are also several shareware programs for Mac and PC for displaying the images stored on the disc. * Major Divisions of this CD-ROM: This CD-ROM contains more than 630 Megabytes of data and programs; some 500 Mb is accessible to all types of hardware, while the remainder is in specific Macintosh image formats. Within the major partition, files are grouped in subdirectories as follows: Gazetteers: International Hydrographic Organization (GEBCO) US Bureau of Geographic Names (courtesy NOS) Images: Computer-readable versions of 20 views of the Earth, formatted in GIF, HDF, and 24-bit color TIF. Images correspond to "Relief Globe Slides" available from NGDC Plates: University of Texas digitization of crustal plate boundaries Quakes: Earthquake epicenters 1980-1990, M >= 5 RGB Image: Red, Green, Blue separations for Mercator-projection color shaded relief image of the world to +/- 80 degrees latitude. WDB: World Data Bank II coastlines, rivers & lakes, political boundaries WVS: World Vector Shoreline data, courtesy Defense Mapping Agency, scale equivalents from 1:43 Million to 1:50,000; PC/UNIX access and plotting software (Macintosh software in the "Macintosh(R) Files" directory) Gravity: SEASAT: Free-air gravity anomalies derived by Wm. Haxby (LDGO) from Seasat altimetry; 5-minute lat/lon grid between +/- 72 deg. latitude. ASCII and 16-bit binary formats. GEOSAT: 1) Free-air gravity anomalies from "Gravity Atlas of the Southern Ocean", data 60-72 Deg South. 2) Gridded free-air anomalies from GeoSat and Exact Repeat Mission (0.04 deg longitude x 0.05 deg latitude), 16-bit binary data, coverage 30-72 deg South. (K. Marks and D. McAdoo, NOAA/NOS) TOPO: ETOPO5 5-minute gridded elevations/bathymetry for the world. 16-bit binary data for Mac/Sun, also swapped byte order for PC/VAX. NOTE: ETOPO5 was derived from data assembled by Margo Edwards, et al., Washington University. Related Map: Edwards, M.H., and R.E. Arvidson, Report MGG-2, Relief of the surface of the Earth, J.R. Heirtzler (ed.), published for World Data Center A for Marine Geology and Geophysics by the National Geophysical Data Center, Boulder, CO, 1985. Edwards and Arvidson added land topography to the (then) current version of the DBDB-5 ocean bathymetry grid from the US Naval Oceanographic Office to produce the land-sea grid that became ETOPO5. Old Topo: R.A.N.D. and Scripps topographic data bases (ASCII) FNOC: 10-minute gridded Modal height data for land masses, from US Navy Fleet Numerical Oceanography Center (Binary, with access software) USGS: 30-second gridded elevations and coastal water depths for the 48 contiguous United States, derived from US Geological Survey and National Ocean Service data. NOSEEZ: Gridded (15" lat-lon and 250-m UTM) bathymetric data from US Exclusive Economic Zone (EEZ) surveys by NOAA National Ocean Service. ASCII, data files plus documentation. PublicPC: Image display software from National Center for Supercomputing Applications; other shareware for display of GIF, PCX, etc. Macintosh-only files: These files are in ISO-9660 CD-ROM standard format, and are therefore visible to the Mac without their usual icons. The "hand-over-the-diamond" application icon appears for all executible files, the standard generic document icon is user for all data files. Any Mac file dragged from the CD-ROM to hard disc will magically grow its correct color icon (although, you may have to rebuild your desktop file to see it). Images: "Relief Globe Slide" images as 24-bit and 8-bit color PICT files (moved to "IMAGES" directory above) Public Software: * Image Processing shareware from National Center for Supercomputing Applications, National Institutes of Mental Health, and Jet Propulsion Laboratory. * NGDC software for access and full-color (24-bit) color image display of ETOPO5 data. QuickTime: QuickTime(tm) animations of rotating color relief globe in 8- and 24-bit color, with musical background. Try it. WVS: Access and display software for World Vector Shoreline and World Data Bank II Data. See the specific documentation in the directories "README_D" for PC users, or "MAC_READMES" for Mac users for more information about individual data bases. * * * * * * * * * * * * * * * * * * The IHB Gazetteer files: A 1993 version of the International Hydrographic Bureau Gazetteer of Undersea Features, along with their index of charts and other source information, is found in the directory \GAZETEER\IHOGAZ\, and is accessed by PC users by switching to that directory and executing the program "IHB.EXE". (The entire directory can, of course, be copied to your hard disk if you want better speed.) No Mac version exists, but there is an older version of the data in \GAZETEER\IHBGAZ_O in dBASE3 format, named "IHOGAZ.DBF;1". These is also a "tab-delimited" version of the data in "IHOGAZ.TAB;1". They are usable with any appropriate dBASE3 data-compatible software, such as FoxBase, Paradox, FileMaker, Excel, 1-2-3, or even dBASE 3 or 4. * * * * * * * * * * * * * * * * * *