Evaluation of recent earthquake activity along the Ganos Fault: MONGAN network test analysis

Ganos Fayı güncel deprem etkinliğinin değerlendirilmesi: MONGAN ağı test analizleri

Authors

EŞREF YALÇINKAYA, Marco BOHNHOFF, Ethem GÖRGÜN, Hakan ALP, Stephan BENTZ, Ali PINAR, Fatih ALVER, Ömer KıLıçARSLAN, Burçin Didem TAMTAŞ, Burçak GÖRGÜN

Keywords

Ganos Fault, Microearthquake, Fault Zone Waves, Moment Tensor Analysis

Abstract

The monitoring of the Ganos Fault network data represents significant opportunities and challenges for earthquake detection, location, and magnitude calculations, source mechanism and discovery of fault zone waves. This study indicates mostly preliminary data analysis and seismological evaluations. Seismic stations are located in a narrow distant area to allow the discovery of microearthquakes at low magnitude thresholds. While narrow-distance aperture installation has an opportunity to detect microearthquakes, it also causes significant difficulties in determining the source parameters of microearthquakes. Extracting microearthquakes from continuous data shows that special analyzing techniques need to be used. MONGAN data revealed the presence of many earthquakes with a magnitude threshold of M<1.0 in the study region. These earthquakes are mostly out of the network and it is very difficult to obtain reliable solutions due to the insufficient azimuthal distribution of the stations. It is obvious that different network techniques and wave-particle motion analyzes are contributed to the location and source parameters. Although the fault zone structure consists of two different lithologies that significantly differ in seismic wave phase arrival times and wave amplitudes, we observe fault zone head waves on both sides along the Ganos fault. Moment tensor analyzes also depict that reliable source mechanism solutions can be obtained using a small number of station records.

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