Paleoseismic evidence of a giant medieval earthquake in the eastern Himalaya
Paleoseismic evidence of a giant medieval earthquake in the eastern Himalaya
复制标题
喜马拉雅东部中世纪大地震的古地震证据
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
R. Jayangondaperumal
中科院分区：
文献类型：
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作者：
R. Mishra;Ishwar Singh;A. Pandey;P. S. Rao;H. K. Sahoo;R. Jayangondaperumal
本文介绍了在印度东北部西孟加拉的Panijhora村一个约10米高的断层崖上进行的古地震调查的结果。加速器质谱仪分析了14 C放射性碳年龄的限制，从六个碎屑木炭样本，范围从公元前1688年。和公元1152年与公元1255年的中世纪大地震一致，后者被解释为在海沟暴露中产生了最小观测到的~5 m断层滑动。使用贝叶斯统计分析重新校准了以前在喜马拉雅东部的Harmutty、Nameri和Marha研究中的放射性碳年龄，进一步证实了公元1255年地震可能使喜马拉雅锋面从东经85.87°到93.76°断裂了约800公里的可能性。
We present here the results of a paleoseismic investigation carried across a ~10 m high fault scarp at Panijhora village, West Bengal in northeastern India. Accelerator Mass Spectrometer analyzed 14C radiocarbon age constraints from six detrital charcoal samples ranging between 1688 B.C. and A.D. 1152 are consistent with the great medieval earthquake of A.D. 1255 that is interpreted to have produced a minimum observed fault slip of ~5 m in the trench exposure. Recalibration of radiocarbon ages from previous studies at Harmutty, Nameri, and Marha in the eastern Himalaya using Bayesian statistical analyses further substantiates the possibility that the A.D. 1255 earthquake might have ruptured the Himalayan front over a length of ~800 km from ~85.87° to 93.76°E longitudes.
影响因子：
56.9
作者：
Schwanghart, Wolfgang;Bernhardt, Anne;Korup, Oliver
通讯作者：
Korup, Oliver