NHESS Natural Hazards and Earth System Sciences NHESS Nat. Hazards Earth Syst. Sci. 1684-9981 Copernicus Publications Göttingen, Germany 10.5194/nhess-4-53-2004 Tectonic sources of caucasus strong earthquakes Kachakhidze M. 1 Kachakhidze N. 1 Kiladze R. 2 Kukhianidze V. 2 Ramishvili G. 2 Tbilisi State University, Chavchavadze st. 2, Tbilisi 380028, Georgia Abastumani Astrophysical Observatory, Kazbegi av. 2a, Tbilisi 380060, Georgia 01 03 2004 4 1 53 58 Copyright: © 2004 M. Kachakhidze et al. 2004 This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Generic License. To view a copy of this licence, visit https://creativecommons.org/licenses/by-nc-sa/2.5/ This article is available from https://nhess.copernicus.org/articles/4/53/2004/nhess-4-53-2004.html The full text article is available as a PDF file from https://nhess.copernicus.org/articles/4/53/2004/nhess-4-53-2004.pdf

The method called "phase cone" is developed in order to define the location, time of arising and velocity of the earthquakes initiating the low-speed interference stress waves. From the data of the strong earthquakes with <i>M</i>&#x2265;6.0 in Caucasus region during 1900-1992, the immigrators or tectonic sources of low-speed waves were revealed, interference nodes of which had initiated 19&nbsp;earthquakes out of total 33. <P style="line-height: 20px;"> The time of arising of low-speed stress waves or periods of awaking of tectonic sources is defined. <P style="line-height: 20px;"> The velocities of constant initiative waves for all events were calculated. Its average value is equal to 2.97km per year.