Podhale,Poland, earthquake of November 30, 2004 |
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| Authors: | Pawe? Wiejacz Wojciech D?bski |
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| Institution: | (1) Laurentian University, Ramsey Lake Road, Sudbury, ON, P3E 2C6, Canada;(2) Australian Centre for Geomechanics, The University of Western Australia, Crawley, WA, 6009, Australia |
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| Abstract: | Earthquake of November 30, 2004, in Podhale region, southern Poland, was of unexpectedly big size in this area of weak seismicity.
As Poland is considered a country of low seismicity, the earthquake has caused concern about seismic hazard in Poland, especially
since it took place shortly after the even more unexpected Kaliningrad Region, Russia, earthquakes of September 21, 2004,
that inflicted minor damage in northern Poland. The paper presents the findings on the Podhale earthquake which reached macroseismic
intensity up to 7 and magnitude 4.7 (m
b
; ISC). The event was felt up to a distance of about 100 km and inflicted slight damage to buildings in its narrow epicentral
area, thus evidencing its relatively shallow depth. The quake has been located near the village of Skrzypne, about 15 km west-southwest
of the district capital Nowy Targ. The source mechanism has been found to be of dip slip normal fault type, although a problem
remains of association of this mechanism with known tectonic dislocations in the region. The earthquake has been followed
by a long series of aftershocks. Their distribution in time is also studied and the biggest aftershocks have been located. |
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