The Kresna earthquake of 1904 in Bulgaria
The Kresna earthquake in 1904 in Bulgaria is one of the largest shallow 20th century events on land in the Balkans.This event, which was preceded by a large baby accessories foreshock, has hitherto been assigned a range of magnitudes up to M S = 7.8 but the reappraisal of instrumental data yields a much smaller value of M S = 7.2 and a re-assement