Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/1202
AuthorsAmbraseys, N. N. 
TitleThe Kresna earthquake of 1904 in Bulgaria
Issue DateFeb-2001
Series/Report no.44/1
URIhttp://hdl.handle.net/2122/1202
KeywordsBalkans
Bulgaria
seismicity
magnitude
Subject Classification04. Solid Earth::04.06. Seismology::04.06.05. Historical seismology 
AbstractThe 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 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 of the intensity distribution suggests 7.1. Thus both instrumental and macroseismic data appear consistent with a magnitude which is also compatible with the fault segmentation and local morphology of the region which cannot accommodate shallow events much larger than about 7.0. The relatively large size of the main shock suggests surface faulting but the available field evidence is insufficient to establish the dimensions, attitude andamount of dislocation, except perhaps in the vicinity of Krupnik. This downsizing of the Kresna earthquake has important consequences for tectonics and earthquake hazard estimates in the Balkans.
Appears in Collections:Annals of Geophysics

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