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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >High-resolution geological record of historic earthquakes in the Dead Sea basin
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High-resolution geological record of historic earthquakes in the Dead Sea basin

机译：死海盆地历史地震的高分辨率地质记录

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A 2000 year paleoseismic record of the Dead Sea area was recovered from a lacustrine sedimentary section. The section is being exposed at the Ze'elim Terrace on the shores of the Dead Sea due to the fast retreat of the lake. The section consists of laminated detrital and chemical (mainly aragonite) sediments that were deposited in the Holocene paleo-Dead Sea. Eight layers in the section show deformed sedimentary structures and are identified as seismites. Their chronology was determined by radiocarbon dating on organic remains. The seismite ages are well correlated with the historically documented earthquakes of 64 and 31 B.C. and 33, 363, 1212, 1293, 1834 and 1927 A.D.. The few historically documented earthquakes that have no correlatives in the Ze'elim seismite record occurred in times of sedimentary hiatuses at this site (e.g., 749 A.D.). Based on modem analogues and the association of similar disturbed layers with syndepositional faults, the Ze'elim Terrace seismites indicate M>5.5 earthquakes. The average recurrence interval is estimated as similar to 100-300 years and represents slip events on different faults in the Dead Sea area. The Ze'elim section provides a unique opportunity to correlate two independent and extensive data sets, the historical and sedimentary records. This study opens the way for better understanding of spatial and temporal distribution of earthquakes along the Dead Sea Transform and elsewhere. [References: 50]
机译：从湖相沉积剖面中获得了2000年死海地区的古地震记录。由于湖泊的快速撤退，该区域正暴露在死海海岸的Ze'elim露台上。该部分由沉积在全新世古死海中的叠层碎屑和化学（主要是文石）沉积物组成。该剖面中的八层显示出变形的沉积结构，被确定为地震岩。他们的年代由有机残留物上的放射性碳年代确定。地震年龄与历史记载的公元前64和31年的地震有很好的相关性。以及分别在公元33年，363年，1212年，1293年，1834年和1927年。Ze'elim地震记录中没有相关性的少数历史记载地震发生在该地点的沉积裂隙时期（例如，公元749年）。基于现代模拟和相似的扰动层与同沉积断层的联系，Zeelim台地地震表明M> 5.5地震。平均复发间隔估计约为100-300年，代表死海地区不同断层的滑动事件。 Ze'elim部分提供了独特的机会来关联两个独立且广泛的数据集，即历史记录和沉积记录。这项研究为更好地了解沿死海变换和其他地方的地震的时空分布开辟了道路。 [参考：50]

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