Resolving the slip-rate inconsistency of the northern Dead Sea fault

Li, Xing; Jónsson, Sigurjón; Liu, Shaozhuo; Ma, Zhangfeng; Castro-Perdomo, Nicolás; Cesca, Simone; Masson, Frédéric; Klinger, Yann

doi:10.1126/sciadv.adj8408

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Resolving the slip-rate inconsistency of the northern Dead Sea fault

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Li, Xing
External Organizations;

Jónsson, Sigurjón
External Organizations;

Liu, Shaozhuo
External Organizations;

Ma, Zhangfeng
External Organizations;

Castro-Perdomo, Nicolás
External Organizations;

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Cesca, Simone
2.1 Physics of Earthquakes and Volcanoes, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Masson, Frédéric
External Organizations;

Klinger, Yann
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Zitation

Li, X., Jónsson, S., Liu, S., Ma, Z., Castro-Perdomo, N., Cesca, S., Masson, F., Klinger, Y. (2024): Resolving the slip-rate inconsistency of the northern Dead Sea fault. - Science Advances, 10, 11.
https://doi.org/10.1126/sciadv.adj8408

Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5026395

Zusammenfassung

Reported fault slip rates, a key quantity for earthquake hazard and risk analyses, have been inconsistent for the northern Dead Sea fault (DSF). Studies of offset geological and archeological structures suggest a slip rate of 4 to 6 millimeters per year, consistent with the southern DSF, whereas geodetic slip-rate estimates are only 2 to 3 millimeters per year. To resolve this inconsistency and overcome limited access to the northern DSF in Syria, we here use burst-overlap interferometric time-series analysis of satellite radar images to provide an independent slip-rate estimate of ~2.8 millimeters per year. We also show that the high geologic slip rate could, by chance, be inflated by earthquake clustering and suggest that the slip-rate decrease from the southern to northern DSF can be explained by splay faults and diffuse offshore deformation. These results suggest a microplate west of the northern DSF and a lower earthquake hazard for that part of the fault.