Specification of mechanisms of earthquake sources in the Carpathian region
One of the urgent problems - a solution of the focal mechanism of an earthquake is considered. On the example of several events occurred in the Carpathian region of Ukraine, the solving of this problem with a graphic method is proposed. This method is based on identifying the best location option of...
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Subbotin Institute of Geophysics of the NAS of Ukraine
2014
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journalsuranua-geofizicheskiy-article-1160322020-10-07T11:57:02Z Specification of mechanisms of earthquake sources in the Carpathian region Malitskiy, D. V. Gritsay, O. D. Muyla, O. O. Kutniv, O. I. Kozlovskiy, E. M. earthquake source graphic method seismic wave anisotropic medium One of the urgent problems - a solution of the focal mechanism of an earthquake is considered. On the example of several events occurred in the Carpathian region of Ukraine, the solving of this problem with a graphic method is proposed. This method is based on identifying the best location option of nodal planes relatively to both the fuzzy P-wave arrivals and the values of the logarithm of the ratio of the S-wave amplitude to the P-wave amplitude. A sequence of plotting diagrams for determining the focal mechanism is presented. The focal mechanisms and types of faults are determined by using this method for 6 events occurred in the Transcarpathian region. The similarity of the focal mechanisms for repeated earthquakes is shown. The dynamic parameters of the sources of 4 earthquakes occurred in 2012-2013 are retrieved by using data from the spectra of records converted into displacements according to the Brune model. Subbotin Institute of Geophysics of the NAS of Ukraine 2014-08-01 Article Article application/pdf https://journals.uran.ua/geofizicheskiy/article/view/116032 10.24028/gzh.0203-3100.v36i4.2014.116032 Geofizicheskiy Zhurnal; Vol. 36 No. 4 (2014); 118-135 Геофизический журнал; Том 36 № 4 (2014); 118-135 Геофізичний журнал; Том 36 № 4 (2014); 118-135 2524-1052 0203-3100 uk https://journals.uran.ua/geofizicheskiy/article/view/116032/110150 Copyright (c) 2020 Geofizicheskiy Zhurnal https://creativecommons.org/licenses/by/4.0 |
| institution |
Geofizicheskiy Zhurnal |
| baseUrl_str |
|
| datestamp_date |
2020-10-07T11:57:02Z |
| collection |
OJS |
| language |
Ukrainian |
| topic |
earthquake source graphic method seismic wave anisotropic medium |
| spellingShingle |
earthquake source graphic method seismic wave anisotropic medium Malitskiy, D. V. Gritsay, O. D. Muyla, O. O. Kutniv, O. I. Kozlovskiy, E. M. Specification of mechanisms of earthquake sources in the Carpathian region |
| topic_facet |
earthquake source graphic method seismic wave anisotropic medium |
| format |
Article |
| author |
Malitskiy, D. V. Gritsay, O. D. Muyla, O. O. Kutniv, O. I. Kozlovskiy, E. M. |
| author_facet |
Malitskiy, D. V. Gritsay, O. D. Muyla, O. O. Kutniv, O. I. Kozlovskiy, E. M. |
| author_sort |
Malitskiy, D. V. |
| title |
Specification of mechanisms of earthquake sources in the Carpathian region |
| title_short |
Specification of mechanisms of earthquake sources in the Carpathian region |
| title_full |
Specification of mechanisms of earthquake sources in the Carpathian region |
| title_fullStr |
Specification of mechanisms of earthquake sources in the Carpathian region |
| title_full_unstemmed |
Specification of mechanisms of earthquake sources in the Carpathian region |
| title_sort |
specification of mechanisms of earthquake sources in the carpathian region |
| description |
One of the urgent problems - a solution of the focal mechanism of an earthquake is considered. On the example of several events occurred in the Carpathian region of Ukraine, the solving of this problem with a graphic method is proposed. This method is based on identifying the best location option of nodal planes relatively to both the fuzzy P-wave arrivals and the values of the logarithm of the ratio of the S-wave amplitude to the P-wave amplitude. A sequence of plotting diagrams for determining the focal mechanism is presented. The focal mechanisms and types of faults are determined by using this method for 6 events occurred in the Transcarpathian region. The similarity of the focal mechanisms for repeated earthquakes is shown. The dynamic parameters of the sources of 4 earthquakes occurred in 2012-2013 are retrieved by using data from the spectra of records converted into displacements according to the Brune model. |
| publisher |
Subbotin Institute of Geophysics of the NAS of Ukraine |
| publishDate |
2014 |
| url |
https://journals.uran.ua/geofizicheskiy/article/view/116032 |
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2025-07-17T11:06:17Z |
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