Discovery of a tsunami boulder along the coast of Shimoda, Shizuoka, Central Japan
Discovery of a tsunami boulder along the coast of Shimoda, Shizuoka, Central Japan
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日本中部静冈县下田海岸发现海啸巨石
DOI：
10.4116/jaqua.53.259
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Toshiyuki Yamaguchi
中科院分区：
文献类型：
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作者：
A. Kitamura;Y. Ohashi;Y. Miyairi;Y. Yokoyama;Toshiyuki Yamaguchi
我们在日本中部静冈市下田市的一个波浪切割长凳上发现了一块巨石，上面附着着一些固着的组合，大小为3.4×2.5×2.5米，估计重达32吨。出现的固着组合分布在平均海平面0.7-2.2m处，主要由小型藤壶、牡蛎和多毛类组成。根据AMS 14C测年(公元1720-1950)和新出现的固结组合的生态，我们得出结论，巨石是在公元1854年安塞-东海地震引发的海啸中滚动而出的。
We found a boulder to which emerged sessile assemblages cling, 3.4×2.5×2.5 m in size and estimated at 32 tons, on a wave-cut bench at Shimoda, Shizuoka, Central Japan. The emerged sessile assemblages are distributed at 0.7-2.2 m above mean sea-level, and consist mainly of small barnacles, oysters, and polychaetes. Based on AMS 14 C dating (AD 1720-1950) and the ecology of the emerged sessile assemblages, we conclude that the boulder was rolled to emergence by a tsunami associated with the AD 1854 Ansei-Tokai earthquake.