Computer data base consists of regional earthquake catalogs collected in process of the international exchange of data and performance of user requests. Some catalogs have been converted to computer form in the WDC for SEP, Moscow.

Special software has been made out in WDC for SEP, Moscow for every possible searches of data in data base and for obtaining of statistical information on spatial and temporal distributions of data.

Users can look through list of catalogs and request data from computer data base filling up the special form.

Catalogs and subsets of data may be ordered by e-mail .