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Tri-Millennial History of Earthquake Offsets of Tell Ateret on the Dead Sea Fault: a perfect time-predictable behavior?




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Abstract

The abundance of archaeological sites và historical documentation along the Dead Sea Fault (DSF) enables a higher resolution for dating of a tectonically active sầu region. The site of Ateret (Jordan Gorge, north Israel), settled since Stone Age, displays abundant well dated walls that were repeatedly offphối since the Early Bronze Age khổng lồ 1759AD. The dated ruptures enable a kinematic reconstruction of this plate boundary, separating between the Arabia and the Sinai tectonic-plates. We have sầu recently unearthed three consecutive sầu offsets that supplement our published data lớn constrain a five-sự kiện catalogue spanning three millennia. The new catalog, totaling five sầu events, sheds light on the distribution of slip in time & space. The archaeolô ghích slip-rate obtained for the last 3 kyr is in perfect agreement with the 5 kyr value known size paleoseismic trenching. The average slip rate, 3 mm/yr, is ~60% of the GPS determined relative sầu plate velocity. The discrepancy between the archaeologically measured slip & the GPS determined velothành phố is accommodated by diffuse off-fault deformation & possibly by elasticity.

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Examining the form size distribution of detected slip events indicates that a unikhung slip Model is not compatible with the Jordan Gorge earthquake history: the largest/smallest slip ratio is ≥5. The complexity apparent in the catalog seems to lớn stem from the nearby branching of the plate boundary, as suggested from the two lachạy thử events of 1202 AD và 1759 AD, each ruptured a different branch. The archaeongắn gọn xúc tích data supplemented by allegedly dubious historical catalogs generate a perfect time-predictable model for three thous& years ending in the 1950’s. At that time we should have seen an earthquake rupture whilst the instrumental catalog is devoid of such an sự kiện. The 1837 AD M7 rupture of a yet smaller branch of the fault can explain the deviation from the Model, highlighting the role of branching in generating complex behavior. Slip history at Tel Ateret archaeological site. Three of the five events are constrained in time by archaeology and history; for two events we selected the time of a known historic earthquake.




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Pub Date: December 2010 Bibcode: 2010AGUFM.T33B2237M Keywords: 7230 SEISMOLOGY / Seismithành phố & tectonics; 7250 SEISMOLOGY / Transform faults; 8111 TECTONOPHYSICS / Continental tectonics: strike-slip và transform; 8123 TECTONOPHYSICS / Dynamics: seismotectonics

adshelpcfa.harvard.edu

The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative sầu Agreement NNX16AC86A


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