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Project Summary |
We use Global Positioning System (GPS) observations and elastic half-space models to estimate the distribution of coseismic and postseismic slip along the
Izmit earthquake rupture. Our results indicate that large coseismic slip (reaching 5.7 meters) is confined to the upper 10 kilometers of the crust, correlates with
structurally distinct fault segments, and is relatively low near the hypocenter. Continued surface deformation during the first 75 days after the earthquake
indicates an aseismic fault slip of as much as 0.43 meters on and below the coseismic rupture. These observations are consistent with a transition from
unstable (episodic large earthquakes) to stable (fault creep) sliding at the base of the seismogenic zone.
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Tools | GPS, elastic modeling of deformation and stress fields |
Geographic Location | NW Turkey |
Group Members Involved |
Roland Bürgmann<Email> < Web Site> in collaboration with colleagues at MIT |
Project Duration | 1999-2002 |
More Information | < Reprints, data and model parameters > |