首页|Detailed Study of Holocene Paleoearthquakes of the Active Haiyuan Fault
Detailed Study of Holocene Paleoearthquakes of the Active Haiyuan Fault
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Through studying eighteen trenches along the Haiyuan fault, ten paleoearthquakes since ten thousand years ago were determined. The paleoearthquakes have different rupture scales. The first and the last events were the rupturing along the entire fault, while the rest of them along the secondary segments of the fault. Temporally, the paleoearthquakes distributions are not uniform so that they are characterized by clustering and having back and forth spatially from the west to middle -east segment of the fault. The magnitude of earthquakes along the entire ruptured fault is about 8.5 and of those along the secondary ruptured segments is about 7.5.
trenchpaleoearthquakeclusterHaiyuan
Min Wei、Zhang Peizhen、DENG Qidong、MAO Fengying
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Institute of Geology, China Seismological Bureau, Beijing, 100029