Azimuthal Rotation-Dependent Spatial Distributional Patterns of Small Repeaters Estimated From Microseismic Data-Set of Gokova Gulf (sw-Turkey)

Abstract

Small repeating earthquakes reveal properties such as the temporal and spatial clustering of events, which serve as a key tool to constrain the rate/state stress transfer and seismogenetic properties of active seismic areas. In our case, azimuthal rotation-dependent spatial patterns of the small repeaters were estimated from the four yearsmicroseismic data set (~10.000 events) of Gokova Gulf (GG) (SW-Turkey). The process of microseismicity taking place in Gokova Gulf in 2010-2014 was relocated in an attempt to quantify the prominent seismogeneity in the GG and to unveil properties of the associated current stress state of the GG and its projected surroundings at crustal depths. In the present study, we evaluated the 26th November 2012 Bozburun mainshock (Mw 4.4, 4.8) with its accompanying small repeating events and its accompanying multiple aftershock series; the 16th May 2013 Ula aftershock (Mw 4.6), the 25th March 2014 Bozburun aftershock (Mw 4.0), the 1th May 2014 Bodrum aftershock (Mw 4.0) with their accompanying small repeating events, symptomatically occurring in the Bozburun, Ula, and Bodrum areas of the GG by using the microseismic data set. Then, we produced azimuth-dependent, rotational and cross sectional distributional patterns of all microearthquake clusters at depth, up to ~ 160 km. Copyright © Congress of Balkan Geophysical Society, BGS 2019. All rights reserved.