HR: 1340h
AN: S13B-0203    [Abstracts]
TI: Analysis of December 15, 2000 and February 3, 2002 Sultandagi-AfyonEarthquakes
AU: * Aksari, D
EM: aksari@boun.edu.tr
AF: Bogazici University, Kandilli Observatory and Earthquake Research Institute, Cengelkoy, ISTANBUL, 34684 Turkey
AU: KARABULUT, H
EM: kara@boun.edu.tr
AF: Bogazici University, Kandilli Observatory and Earthquake Research Institute, Cengelkoy, ISTANBUL, 34684 Turkey
AU: OZALAYBEY, S
EM: Serdar.Ozalaybey@mam.gov.tr
AF: TUBITAK Marmara Research Center, Earth and Marine Sciences Institute, Gebze, KOCAELI, 41470 Turkey
AB: We analyzed two moderate size earthquakes (Mw=6.0, Mw=6.4) occurred in Sultandagi-Afyon, southwestern Turkey on December 15, 2000 and February 03, 2002. Both earthquakes took place on the Sultandagi fault. The fault mechanism solutions were normal faulting with slightly different orientations and directivity. The rupture during the 2000 earthquake propagated to the southwest of Sultandagi fault while the rupture on the 2002 earthquake propagated to the northwest. The distance between the epicenters of two events was less than 9 km. The aftershock distribution obtained 4 days after the 2002 earthquake by TUBITAK well constrained the geometry of the ruptured segment of the 2002 earthquake. The large aftershocks of 2002 earthquake were relocated and the spatio-temporal distribution was evaluated in terms of stress triggering. Coulomb stress changes related to the two earthquakes have been investigated to explore the possibility of fault interaction and stress transfer mechanisms. The correlation between Coulomb stress and the aftershock distribution was investigatied.
DE: 7209 Earthquake dynamics (1242)
DE: 7223 Earthquake interaction, forecasting, and prediction (1217, 1242)
DE: 7230 Seismicity and tectonics (1207, 1217, 1240, 1242)
SC: Seismology [S]
MN: Fall Meeting 2005