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Title: ESTIMATING THE MAGNITUDE OF COMPLETENESS, b -VALUE AND SEISMIC ENERGY RELEASE FOR VRANCEA ROMANIA CRUSTAL EARTHQUAKES FOR THE LAST THREE DECADE
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ESTIMATING THE MAGNITUDE OF COMPLETENESS, b -VALUE AND SEISMIC ENERGY RELEASE FOR VRANCEA ROMANIA CRUSTAL EARTHQUAKES FOR THE LAST THREE DECADE
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1314-2704
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English
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21
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1.1
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• Prof. DSc. Oleksandr Trofymchuk, UKRAINE
• Prof. Dr. hab. oec. Baiba Rivza, LATVIA |
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The purpose of this study consists in the evaluation of completeness magnitude (Mc), b value spatial variation and seismic energy release in Vrancea crustal seismogenic area, during the period between 1990 and 2021. This parameters are essential for a correct interpretation of seismicity analysis.
For the analyses, we have selected from the Romplus seismic catalog (www.infp.ro) the crustal events with depth 0<h<52 Km, and magnitudes 0.1 <Mw <5.4,recorded from 01 January 1990 to 01 March 2021, in the area bordered by 44.5 N - 46.5 N latitude and 26.0 E - 27.5 E longitude.The method we used to calculate Mc is based on the Goodnes of Fit test (GFT).The Mc completeness magnitude parameter is essential in seismology studies and represents the minimum value of the magnitude for which all events in a given region are correctly detected. The b value parameter is calculated taking into account the magnitude of completeness Mc and the average value of the magnitudes of events above the threshold value Mc The seismic energy release in Vrancea zone was calculated in the period 1990-2020 only for crustal depth earthquakes using Mw resulted from the seismic moment (Mo), parameter that measures the overall deformation in the source. |
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conference
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21st International Multidisciplinary Scientific GeoConference SGEM 2021
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21st International Multidisciplinary Scientific GeoConference SGEM 2021, 16 - 22 August, 2021
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Proceedings Paper
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STEF92 Technology
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SGEM International Multidisciplinary Scientific GeoConference
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SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci & Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts & Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci
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467-474
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16 - 22 August, 2021
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website
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cdrom
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7815
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Magnitude of completness; b value ; Energy release ; Vrancea crustal area
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