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Published on 09 November 2018

STUDY OF THE CURRENT SEISMIC ACTIVITY OF THE VOLCANIC JAVAKHETI HIGHLAND (2005–2017)

Sahakyan E.E., Sargsyan L.S., Babayan H.Y., Gevorgyan M.R.

The Javakheti Volcanic Highland, located in the central Caucasus, is part of the ArabiaEurasia continental collision zone. The area is characterized by active tectonics and volcanism. Features of seismic activity and parameters of seismic regime in the volcanic highland of Javakheti during the period of 2005–2017 were studied in this work. High seismic activity (a=4.44) had been characteristic for the Javakheti Highland during the indicated period. From the Gutenberg-Richter relation, b is equal to 0.8, which means that the seismicity of this area is due to weak earthquakes. The epicenters of earthquakes with ML≥3.0 magnitude are located either along active faults or in areas adjacent to them. The distribution of hypocenters shows that seismic events have mainly occurred up to the depth of 20 km, which coincides with the earthquake depths in the Caucasus. Seismic activity in this source area has been characterized by a staged pattern of more passive phases followed by active ones.

CityYerevan
CountryArmenia
UDC551
Issue2018, № 3 (Т. 10)
Key wordsJavakheti Volcanic Highland, earthquake, seismicity, volcanism, earthquake catalog
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Categories: Articles

Tags: землетрясения, сейсмичность, Джавахетское вулканическое нагорье, вулканизм, каталог землетрясений.

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ISSN 1998-4502 (Print)                                                            ISSN 2499-975Х (Online)