HR: 0830h
AN: G21B-0273    [PDF]
TI: Measuring inter-seismic deformation by INSAR in Eastern Turkey
AU: * Feigl, K L
EM: Kurt.Feigl@cnes.fr
AF: CNRS, 14 ave. E. Belin, Toulouse, 31400 France
AU: McClusky, S
EM: simon@wegener.mit.edu
AF: MIT, 77 Mass. Ave., Cambridge, MA 02139 United States
AU: Elitas, S
EM: Samuray.Elitas-posta.mam.gov.tr
AF: TUBITAK Marmara Research Center, Earth and Marine Sciences Research Institute, Gebze-Kocaeli, 41470 Turkey
AU: Ergintav, S
EM: Semih.Ergintav@mam.gov.tr
AF: TUBITAK Marmara Research Center, Earth and Marine Sciences Research Institute, Gebze-Kocaeli, 41470 Turkey
AU: Reilinger, R
EM: reilinge@erl.mit.edu
AF: MIT, 77 Mass. Ave., Cambridge, MA 02139 United States
AB: We seek to measure interseismic deformation across the fault systems intersecting at the Karlova Triple Junction using radar interferometry at C-band (~5 cm) wavelengths. We have obtained ERS interferograms with enough correlated pixels to interpret for pairs spanning up to 3 years, provided that the images are both acquired in the summer months (June-September) and the altitude of ambiguity is very favorable (over 500 m in absolute value). This result extends the work of Wright et al. [GRL, 2001]. We have developed an approach that analyzes changes in range in profiles perpendicular to the strike of the fault. After unwrapping, these profiles show gradients which combine the interseismic deformation signal with the unmodeled orbital effects. Previous studies have neglected the orbital errors. To separate the former from the latter, we apply an approach called temporal adjustment that estimates both interseismic deformation parameters and orbital corrections. We compare the INSAR results to available GPS estimates.
DE: 1206 Crustal movements--interplate (8155)
DE: 1243 Space geodetic surveys
DE: 1294 Instruments and techniques
DE: 8123 Dynamics, seismotectonics
SC: Geodesy [G]
MN: 2003 Fall Meeting