HR: 1340h
AN: G13A-0915    [Abstracts]
TI: Investigation of Total Crustal Movements Using Terrestrial and GPS Measurements along the Western Part of North Anatolian Fault in the Marmara Region
AU: * Ozener, H
EM: haluk.ozener@itu.edu.tr
AF: Istanbul Technical University, Civil Engineering Faculty, Geodesy and Photogrammetry Department, ITU Ayazaga Kampusu Maslak, Istanbul, 34469, Turkey
AU: Akay, G
EM: gozde.akay@boun.edu.tr
AF: Bogazici University,Kandilli Observatory and Earthquake Research Institute, Geodesy Department, Cengelkoy, Istanbul, 34680, Turkey
AB: In order to monitor crustal movements along southern branch of North Anatolian Fault Zone (NAFZ), Geodesy Department of Kandilli Observatory and Earthquake Research Institute (KOERI) initiated to establish microgeodetic networks around eastern Marmara Region. General Command of Mapping (GCM)-Istanbul Technical University (ITU) network was constituted of nine pillars, measured five times between 1941 and 2007 applying with respectively trialteration, triangulation and space geodetic methods. In years 2004 and 2007 GPS campaign processing was extended and re-evaluated by adding three new stations from Marmara Region Continuous GPS Observation (MAGNET) network. This study aimed to gather displacements of the GCM-ITU network and analyze the movements of the stations in order to monitor crustral deformation along the Iznik fault. By taking the stations located at the south of the fault as stabilized, the displacements of the remaining stations were evaluated. The movements of stations were found to be ranging between 19 cm to 2 mm according to the accuracy of observation method. The results demonstrated that the stations at both the south and the north of the fault have moved during the 1941-2007 period, and these movements were independent of the movement of the fault itself.
DE: 1209 Tectonic deformation (6924)
DE: 1240 Satellite geodesy: results (6929, 7215, 7230, 7240)
DE: 1242 Seismic cycle related deformations (6924, 7209, 7223, 7230)
DE: 1243 Space geodetic surveys
SC: Geodesy [G]
MN: 2007 Fall Meeting