Recurrence of postseismic coastal uplift, Kuril subduction zone, Japan
Recurrence of postseismic coastal uplift, Kuril subduction zone, Japan
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DOI：
10.1029/2006gl026052
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发表时间：
2006-07-15
影响因子：
5.2
通讯作者：
Shishikura, Masanobu
中科院分区：
文献类型：
--
作者：
Kelsey, Harvey;Satake, Kenji;Shishikura, Masanobu
北海道东部海岸地层学研究表明，全新世晚期海岸多次发生分米级的抬升。利用放射性碳测年和火山灰年代学，我们确定了沿着100公里长的千岛俯冲带6隆升事件，因为类似的2,800年B。P.海啸事件的发生频率与异常高的海啸相同。平均每500年发生一次的沿海隆起事件，是在一次产生异常高海啸的近海多段地震之后，孕震板块边界下倾延伸上长达十年的地震后深滑动的产物。
Coastal stratigraphy of eastern Hokkaido indicates that decimeters of coastal uplift occurred repeatedly in the late Holocene. Employing radiocarbon dating and tephrochronology, we identify along a 100 km length of the Kuril subduction zone six uplift events since similar to 2,800 years B. P. Uplift events occur at the same frequency as unusually high tsunamis. Each coastal uplift event, which occurs on average every 500 years, is the product of decade-long post seismic deep slip on the down dip extension of the seismogenic plate boundary following an offshore multi-segment earthquake that generates unusually high tsunamis.