CARPATHIA: Seismicity Map and Composite Regional Catalog
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this region includes a territory of ancient high civilization, historical
information for large earthquakes was found as early as about 500 years
BC. In the General Catalog,
90 earthquakes were reported for the period before 1990, with magnitudes
between 5.8 and 8.0; 363 more events are reported from the early
instrumental period, 1900-1961. Among
these, only 24 (about 5%) have estimated depths of 50 km or more.
This contrasts sharply with the 495 deep earthquakes, of a total of
637, in the 1962-1999 period. This
discrepancy may be because the deeper events produced smaller macroseismic
effects and were, therefore, rarely noted in historical records.