The strongest earthquakes in Central Asia and their aftershock series
https://doi.org/10.18303/2619-1563-2026-1-25
Abstract
The spatiotemporal distribution of aftershock sequences nine of the strongest (7.5 ≤ Mw ≤ 7.9) crustal intraplate earthquakes in Central Asia (φ = 20–50° N, λ = 57–120° E) was analyzed for the observation period of 1976–2016. The dynamics of the seismic process development was assessed based on the values of the total scalar seismic moments released during daily, 10-day, monthly, and annual periods during the development of aftershock series with mb(ISC) ≥ 4.5. As a result of the analysis of fragments of aftershock series along the linear extent of the rupture of the main foci, the largest bursts of activity were noted near the epicenter of the main event or at the end of the aftershock region.
Keywords
aftershock sequences,
scalar magnitude of the seismic moment,
the strongest earthquakes in Central Asia,
mechanisms of earthquake foci
Supporting agencies: the study was carried out within the framework of the project No. FWZZ-2026-0050.
About the Authors
O. A. Kuchay
Trofimuk Institute of Petroleum Geology and Geophysics, SB RAS
Russian Federation
Russian Federation
Olga A. Kuchay
Koptyug Ave., 3, Novosibirsk, 630090
E. A. Melnik
Trofimuk Institute of Petroleum Geology and Geophysics, SB RAS
Russian Federation
Russian Federation
Elena A. Melnik
Koptyug Ave., 3, Novosibirsk, 630090
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Review
For citations:
Kuchay O.A., Melnik E.A. The strongest earthquakes in Central Asia and their aftershock series. Russian Journal of Geophysical Technologies. 2026;(1):25-38. (In Russ.) https://doi.org/10.18303/2619-1563-2026-1-25
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