Coulomb stress change before and after 24.01.2020 Sivrice (Elazığ) Earthquake (Mw = 6.8) on the East Anatolian Fault Zone

2021 ◽  
Vol 14 (23) ◽  
Author(s):  
Hamdi Alkan ◽  
Aydın Büyüksaraç ◽  
Özcan Bektaş ◽  
Ercan Işık
Keyword(s):  
Fault Zone ◽  
Stress Change ◽  
Coulomb Stress ◽  
Coulomb Stress Change ◽  
Before And After ◽  
East Anatolian Fault Zone ◽  
East Anatolian Fault

scholarly journals COULOMB STRESS CHANGES DUE TO RECENT ACEH EARTHQUAKES

2015 ◽  
Vol 5 (1) ◽  
pp. 9 ◽  
Author(s):  
M Madlazim
Keyword(s):  
Fault Zone ◽  
Large Earthquake ◽  
Stress Change ◽  
Coulomb Stress ◽  
Coulomb Stress Change ◽  
Change Analysis ◽  
Coulomb Stress Changes ◽  
Stress Changes

Coulomb stress change analysis has been applied to understand whether the 2013/07/02 (Mw=6.1) has been triggered by 2013/01/21 earthquake (Mw=6.1) the proximity to failure on the Aceh segment of Sumatra Fault Zone (SFZ). We examine the problem of how one earthquake might trigger another using Coulomb stress changes plotting. To plot the Coulomb stress changes, we used Global CMT data for the both earthquakes and used GEOFON data for manually revised epicenters of its aftershocks. The earthquakes are located on Aceh segment of the historic no recorded large earthquake. Coulomb stress changes modeling of the both earthquakes and plot their aftershocks. Surprisingly, the 2013/07/02 earthquake is located on increasing Coulomb stress changes region of 2013/01/21 earthquake plotting. Here explain that the 2013/07/02 earthquake has been triggered by the 2013/01/21 earthquake. Further, the two aftershocks of the 2013/07/02 earthquake is located on increasing Coulomb stress changes region of 2013/07/02 earthquake plotting. So that, the aftershocks has been triggered by increasing Coulomb stress changes of the 2013/07/02 earthquake.

The Stress Triggering of Aftershocks by Badong M5.1 Mainshock from Coulomb Stress Changes

2014 ◽  
Vol 971-973 ◽  
pp. 2172-2175
Author(s):  
Dong Ning Lei ◽  
Jian Chao Wu ◽  
Yong Jian Cai
Keyword(s):  
Stress Change ◽  
Coulomb Stress ◽  
Coulomb Stress Change ◽  
Coulomb Stress Changes ◽  
Stress Changes ◽  
Stress Triggering

TheCoulomb stress changes are usually adopted to make analysis on faultinteractions and stress triggering. This paper mainly deals with Coulomb stresschange of mainshock and affect on aftershocks. We preliminarily conclude thatthe mainshock produce Coulomb stress change on aftershocks most behavingpositive and triggered them. By calculating it is obvious that more aftershocksfell into stress increasing area and triggering percentage is up to ninety ofmaximum and seventy-one of minimum.

scholarly journals Rupture kinematics of 2020 January 24 Mw 6.7 Doğanyol-Sivrice, Turkey earthquake on the East Anatolian Fault Zone imaged by space geodesy

2020 ◽  
Vol 223 (2) ◽  
pp. 862-874 ◽  
Author(s):  
Diego Melgar ◽  
Athanassios Ganas ◽  
Tuncay Taymaz ◽  
Sotiris Valkaniotis ◽  
Brendan W Crowell ◽  
...  
Keyword(s):  
Fault Zone ◽  
Satellite System ◽  
High Rate ◽  
Slip Model ◽  
Slip Region ◽  
Global Navigation Satellite ◽  
Rupture Kinematics ◽  
Source Duration ◽  
East Anatolian Fault Zone ◽  
East Anatolian Fault

SUMMARY Here, we present the results of a kinematic slip model of the 2020 Mw 6.7 Doğanyol-Sivrice, Turkey Earthquake, the most important event in the last 50 yr on the East Anatolian Fault Zone. Our slip model is constrained by two Sentinel-1 interferograms and by 5 three-component high-rate GNSS (Global Navigation Satellite System) recordings close to the earthquake source. We find that most of the slip occurs predominantly in three regions, two of them at between 2 and 10 km depth and a deeper slip region extending down to 20 km depth. We also relocate the first two weeks of aftershocks and find a distribution of events that agrees with these slip features. The HR-GNSS recordings suggest a predominantly unilateral rupture with the effects of a directivity pulse clearly seen in the waveforms and in the measure peak ground velocities. The slip model supports rupture propagation from northeast to southwest at a relatively slow speed of 2.2 km s−1 and a total source duration of ∼20 s. In the absence of near-source seismic stations, space geodetic data provide the best constraint on the spatial distribution of slip and on its time evolution.

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