Journal
GEOPHYSICAL RESEARCH LETTERS
Volume 46, Issue 3, Pages 1268-1275Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1029/2018GL080984
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In this study, the creep rate across the North Anatolian Fault was directly measured in the western Sea of Marmara using the seafloor acoustic ranging technique; the data reveal coupling conditions on the fault interface and stress accumulation with implications for regional seismic risk evaluation. Continuous measurements over a period of 3.5 years at a site in the Western High clearly indicate right-lateral displacement at a rate of 10.7 +/- 4.7 mm/year (95% confidence level); approximately half of the regional block motion at this location is released by this steady motion. A simple model of three elastic layers-a partially creeping sedimentary layer (8 km) at the top with the observed rate, a locked (3 km) and fully creeping layer in the middle, and a bottom layer-assumed from seismicity, reasonably explains onshore Global Navigation Satellite System data for the surrounding region.
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