Focal and Dynamic Parameters of Strong Earthquakes on the Territory of Azerbaijan for the Period 2005-2015

Изучение спектральных и динамических параметров очагов землетрясений по данным инженерных макросейсмических и инструментальных наблюдений необходимо для решения многих задач фундамен- тальной и прикладной сейсмологии. Это задачи физики очага, процессов подготовки сильных землетря- сений, задачи сейсмического районирования, микрорайонирования, расчета сейсмических воздействий, геофизической защиты территории и т. д. Study of spectral and dynamic parameters of earthquake sources with the help of the data of engineering macroseismic and instrumental observations is necessary for many fundamental and applied seismology problems solving. These are the problems of earthquake source physics, processes of strong earthquakes origination, problems of seismic zoning, microzonation, seismic impacts calculation, geophysical protection of territory etc.

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SOURCE PARAMETERS of STRONG EARTHQUAKES of the EARTH

Zemletriaseniia Severnoi Evrazii [Earthquakes in Northern Eurasia] ◽

10.35540/1818-6254.2019.22.26 ◽

2019 ◽

pp. 292-298 ◽

Cited By ~ 1

Author(s):

L. Chepkunas ◽

L. Malyanova

Keyword(s):

Seismic Moment ◽

Source Parameters ◽

Dynamic Parameters ◽

Strong Earthquakes ◽

The Earth ◽

The World ◽

Stress Drops ◽

Digital Equipment

For the 19 strongest earthquakes of Russia and the world the dynamic parameters: seismic moments, lengths of ruptures, stress drops, the values of motion in the source are brought. The spectra of Р-wave were calculated on records of IRIS-IDA digital equipment at stations Obninsk-OBN, Talay-TLY, Kislovodsk-KIV in the range of epitsentralny distances of =25–82°. On the basis of the values of seismic moment Мo received on digital records at stations Obninsk-OBN, Talay-TLY, Kislovodsk-KIV, the momentny magnitude Mw (Kana-mori) are presented.

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SOURCE PARAMETERS of STRONG EARTHQUAKES of the EARTH

Zemletriaseniia Severnoi Evrazii [Earthquakes in Northern Eurasia] ◽

10.35540/1818-6254.2020.23.24 ◽

2020 ◽

pp. 244-249

Author(s):

L. Chepkunas ◽

L. Malyanova

Keyword(s):

Seismic Moment ◽

Source Parameters ◽

P Wave ◽

Apparent Stress ◽

Dynamic Parameters ◽

Strong Earthquakes ◽

Rupture Length ◽

The Earth ◽

The World ◽

The Moment

For nine strongest earthquakes in Russia and the World, dynamic parameters were determined. They were calculated from the P-wave spectra recorded by IRIS-IDA digital equipmentat Obninsk (OBN), Talaya (TLY) and Arti (ARU) stations at the epicentral distances =30–80°.The following parameters are given: seismic moment, rupture length, stress drop and apparent stress, average displacement during rupture of earthquake. The moment magnitude Mw obtained from seismic moment M0 at Obninsk, Talaya, and Arti stations was calculate by the formula of H. Kanamori.A comparison of the obtained parameters M0 and Mw with the data of the GCMT international center showed their proximity.

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