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Sejsmiczność Polski w świetle danych historycznych

Guterch B.

Przegląd Geologiczny

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2009

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Vol. 57, nr 6

513-520

EN

Polandisacountry of low seismic activity and return periods of earthquakes are long. Thus, historical records of seismic events are here the main source of information. Earthquake catalogue since XVI century, without foreshocks and aftershocks, is listed. Epicenters of seismic events are distributed mainly in southern Poland along Sudetes and Carpathians, and in central and northwestern Poland, generally along the Teisseyre-Tornquist Zone. The historical data from the Precambrian Platform in northeastern Poland, and from the Fore-Sudetic Block and the Carpathian Foredeep are too poor for evaluation of earthquake parameters with sufficient accuracy. The Orawa-Nowy Targ Basin in the Carpathians is the best seismically recognized region in Poland. A series of seismic events occurred on November 30, 2004, with the main earthquake of magnitudeM=4.4 and epicentral intensity Io = 7 in the EMS-98 scale, caused even damage to buildings. Similar events were recorded there in years 1935 and 1717. The Kaliningrad earthquakes of M = 5.0 and M = 5.2 on September 21, 2004 occurred in the area of the Precambrian Platform supposed to be aseismic. The earthquakes caused slight damage to individual buildings in more than 100 localities in northern and northeastern Poland. The seismicity of Poland can be only well recognized by monitoring of micro shocks, i.e. seismic events of M << 2 by arrays of local seismic stations located both in active and supposedly aseismic areas.

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Earthquakes recorded in Poland along the Pieniny Klippen Belt, Western Carpathians

Guterch B., Lewandowska-Marciniak H., Niewiadomski J.

Acta Geophysica Polonica

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2005

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Vol. 53, nr 1

27-45

EN

Instrumental and macroseismic data of a sequence of local earthquakes recorded in 1995 in the Western Carpathians (the region of Podhale, northernmost part of the Pieniny Klippen Belt) have been analysed. The earthquakes occurring in the area of the Orawa-Nowy Targ depression are the evidence that tectonic faults in this area are still seismically active. An earthquake of M = 4.1 was re-corded there in November 2004.

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Seismicity and seismic hazard in Poland

Guterch B., Lewandowska-Marciniak H.

Folia Quaternaria

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2002

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nr 73

85-99

EN

The catalogue of earthquakes in Poland, based on the 1999 common catalogue for the Czech Republic, Poland, and Slovakia, and the recently supplemented version of the national catalogue of earthquakes in Poland, is presented. Seismicity maps of Poland for different periods are discussed at large, alongside with the spatial and temporal distribution of earthquakes. Earthquake hazard maps for the return period of 1000 years, in terms of intensities sensu SCHENK et al. (2000) are presented and discussed.

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Earthquake hazard maps for the Czech Republic, Poland and Slovakia

Schenk V., Schenkova Z., Kottnauer P., Guterch B., Labak P.

Acta Geophysica Polonica

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2001

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Vol. 49, nr 3

287-302

EN

This paper describes cross-border earthquake hazard maps calculated in terms of macroseismic intensities and peak ground accelerations (PGA) for the Czech Republic, Poland and Slovakia (CZ-PL-SK). The study has been done in the framework of the Global Seismic Hazard Assessment Program (GSHAP). The new earthquake parametric catalogue for CZ-PL-SK was used. The catalogue represents an updated, revised and comprehensive seismicity database without boundary problems. Earthquake data have been normalized to obtain a reliable annual recurrence graph for each seismic region and the maximum expected earthquakes have been estimated. Calculated attenuation laws allowed more advanced earthquake hazard maps to be defined. Using Cornell's standard probabilistic method, the hazard maps were calculated for the return periods 475, 1000, and 5000 years. For the period of 475 years, good coincidences were found when comparing this newely calculated intensity map with that of Grunthal for Germany (D) and Austria (A); and the PGA map with the effective ground acceleration map for Austria by Lenhardt.