EARTHQUAKE STRONG MOTION 3-VOLUME CD-ROM COLLECTION
                      March 1996 

            National Geophysical Data Center
                  325 Broadway, E/GC1 
              Boulder, Colorado 80303 USA

	          Ph. 1-303-497-6084
	          Fax 1-303-497-6513
              Internet pkd@ngdc.noaa.gov
	          info@ngdc.noaa.gov


The Earthquake Strong Motion CD-ROM Collection contains a 
collection of over 15,000 digitized and processed accelerograph 
records dating from 1933 to 1994. Three types of processed 
records are included on the CDs: Uncorrected (raw), Corrected 
(filtered), and Response spectra (includes Fourier spectra). 
All of the records on this CD-ROM are public domain and can 
be used or redistributed without restriction. 

The data on the CDs are organized as follows:

     Volume 1  California records for 1933-1988
	       Montana, Nevada, and Washington records           
               (A complete listing is found in VL1INDEX.TXT)
               	       
     Volume 2  California records for 1989-1994 and 
	       all other non-California USA records
               (A complete listing is found in VL2INDEX.TXT)

     Volume 3  Non-USA records
               (A complete listing is found in VL3INDEX.TXT)

The root level directories for each CD are DATA, DOCUMENT and 
SOFTWARE. These directories are described in more detail below.

  DATA - Contains directories of all the data sets on the 
	 CD-ROM, for example USACA01, USACA02, etc.

    DATA SET directories (for example USACA01) - Contains a  
	 *.txt file that provides information on the triggering 
         event, contributing organization, and type of data; 
         and a *.bib file with a bibliography. 
	 
      RECORDS directories - Contains the ASCII files of the  
	 accelerograph records. The files can be retrieved 
         with the SMCAT3 software.

  DOCUMENT - Contains PCX files of the documentation that can 
	 be displayed with the GeoVu software.

  SOFTWARE - Contains directories of the GeoVu and SMCAT3 software.
    
    SMCAT3 - Contains SMCAT3 (Strong Motion Data Catalog) 
	 installation software and help files.

    GEOVU - Contains GeoVu installation software and help files.


		       GETTING STARTED

SMCAT3 (Strong Motion Data Catalog)

SMCAT3 is a data inventory package for IBM PCs. It contains 
a comprehensive database which summarizes the characteristics 
of each accelerogram. SMCAT3 allows users to search the 
database for records suitable for specific applications, 
display the results of the search, output the results to an 
ASCII, DBASE, or LOTUS file, and retrieve the files from the 
CDs. 

The SMCAT3 installation file for IBM PCs is provided on the 
Earthquake Strong Motion CDs in the SOFTWARE\SMCAT3 directory.
Installation instructions are in the "README.CAT" file in the 
same SOFTWARE\SMCAT3 directory. 


SMCAT3 USER MANUAL

Print the SMCAT3.PS postscript file located in the 
SOFTWARE\SMCAT3 directory for detailed information 
on the software.


GEOVU DISPLAY AND ACCESS SOFTWARE

The GeoVu software is provided on the CDs to display PCX 
files of documentation related to the accelerograph data. 
GeoVu will operate on any IBM PC-compatible personal computer
running Microsoft Windows with a graphics board and a CD-ROM 
reader. 

The GeoVu installation files for Microsoft Windows are 
provided on the Earthquake Strong Motion CD-ROMs in the 
SOFTWARE\GEOVU\PC directory. Installation instructions are 
in the "README.GEO" file in the SOFTWARE\GEOVU directory.


ABOUT THE COMPACT DISC

The data on this CD-ROM are written in the International 
Organization for Standardization (ISO) 9660 format. Mastering 
of the CD-ROM disc and replication of the copies were done 
by Disc Manufacturing, Inc., Anaheim, California, under 
contract to NGDC.

Handle the CD-ROM carefully to avoid damage. Dust, scratches, 
ink, paint, fingerprints, and high temperatures may corrupt 
this media. With careful handling and proper storage the 
discs have an expected lifetime of ten years.