| Autor: |
Ovsyuchenko, A. N., Butanayev, Yu. V., Koshevoy, N. G. |
| Předmět: |
|
| Zdroj: |
Geotectonics; Apr2023, Vol. 57 Issue 2, p153-171, 19p |
| Abstrakt: |
This article presents the results of studies of the source of a strong earthquake in Central Tuva. The studies were carried out using the structural-geomorphological, paleoseismological, and historical-paleoseismological methods. Primary information about the source and its location was found in folklore sources with a toponymic reference, based on which traces of the earthquake were found and mapped afield. Traces of earthquakes are confirmed by seismic ruptures in the Ulugkhem active fault zone and seismogravity evidence. This event is preliminary dated to 1715‒1758; magnitude Mw = 6.5‒7.0. The intensity of the earthquake at the epicenter reached VIII–IX (ESI-2007 scale). The consequences of the catastrophic explosion of 1950 in the Ulugkhem active fault zone, which led to human casualties and destruction, were mapped. The results of the research make it possible to clearly define the northern boundary of the Kyzyl intermountain basin as a fault with sinistral overthrust reverse fault kinematics of displacements in the Holocene. The identification of the epicentral zone of a historical earthquake is necessary to assess the seismic hazard of the most densely populated region of the Republic of Tuva. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
Full text from SpringerLink