The ISC Historical Hypocenter Catalog

The ISC Historical Hypocenter Catalog
   
                                                               June 3 1993
                                         Earthquake Prediction Data Center
                                             Earthquake Research Institute
                                                       University of Tokyo
                                             ( K.Takano K.Yoshii K.Koketsu
                                                S.Hiyama Y.Kotake K.Abe )

     This Hypocenter Files contain the historical hypocenter data compiled and distributed 
by International Seismological Centre (ISC).
     The files and the sources of data are:
1904-1963 Historical catalogues not determined by ISC
     1.  1904-1952.        Gutenberg and Richter - 'Seismicity of the Earth'
     2.  1913-1963.        International Seismological Summary (ISS).
     3.  1935              Bureau Central International de Seismologie (BCIS).
     4.  1950-1963.11.29.  Bureau Central International de Seismologie (BCIS).
     5.  1950-1963.        L.R. Sykes catalogue of ridge events.
     6.  1928-1960.        United States Coast and Geodetic Survey.
1964-     ISC determined catalogue
     7.  1964-1983.        International Seismological Centre (ISC) prime estimates.
     8.  1982-1983.        Preliminary Determination of Epicentres from United States
                           National Earthquake Information Service (NEIS).
     9.  1984-             All estimates published in ISC bulletins

 The original ISC historical MT files contain the primary estimate indicated by top (*) 
 character and many alternate estimate followed by it. So we select the primary estimate from 
 the MT files here.
 The following MT files are ready at the our data center now:

     1904-1981
     1982
     1983
     1984-1986
     1986
     1986-1988
     1988
     198812     Selected data from ISC Bulletin by K.Yoshii
     1989
     1990

  For Dec 1988 we have not the final ISC historical data but thesedata could select 
from the ISC bulletin file by K.Yoshii now.

			   * CAUTION! *

   As seen from the following letter of February 13, 1987 from ISC, only people 
belonging to Japanese national institutions can use the ISC files free of charge.
   If you do not belong to a Japanese national institution, you are *NOT* allowed 
to copy any of the ISC files. Thank you.

---
1987 February 13

.... As of last year all ISC Governing Council representatives were sent a copy of 
the Bulletin or Catalogue free of charge with the authority to distribute these to 
national institutions ......

Lesley Rothwell
Computer Assistant