EFFECTIVENESS AND LIMITATIONS OF COASTAL FOREST IN LARGE TSUNAMI: CONDITIONS OF JAPANESE PINE TREES ON COASTAL SAND DUNES IN TSUNAMI CAUSED BY GREAT EAST JAPAN EARTHQUAKE
EFFECTIVENESS AND LIMITATIONS OF COASTAL FOREST IN LARGE TSUNAMI: CONDITIONS OF JAPANESE PINE TREES ON COASTAL SAND DUNES IN TSUNAMI CAUSED BY GREAT EAST JAPAN EARTHQUAKE
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大海啸中沿海森林的有效性和局限性：东日本大地震海啸中沿海沙丘上的日本松树状况
DOI：
10.2208/jscejhe.68.ii_7
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发表时间：
2012
影响因子：
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通讯作者：
N. Tanaka
中科院分区：
文献类型：
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作者：
N. Tanaka
人们普遍认为，沿海植被可以减少海啸造成的破坏，但2011年3月11日东日本大地震后，日本东北和关东地区大面积的沿海森林被海啸摧毁。在受影响地区的实地调查阐明了日本沿海松树的临界断裂条件，并确定了大型树木碎片生产的地区。大多数折断的树木留在植被区，但海堤后面或沙丘下坡区的冲刷区产生了大块的树木残骸。相比之下，内陆地区的松树被发现捕获了大量碎片。在未来的设计中，应该更多地利用这种陷印功能。一个包括树木断裂现象的数值模型估计了沿海森林将房屋冲刷区域减少约150米的能力。在发生大海啸并漫过海堤时，这是减灾措施中不可忽视的组成部分。
Coastal vegetation is widely recognized to reduce tsunami damage, but coastal forests in large areas of the Tohoku and Kanto districts of Japan were destroyed by the tsunami after the Great East Japan Earthquake on 11 March 2011. A field survey in the affected area elucidated the critical breaking conditions of Japanese coastal pine trees and identified the regions of large-tree debris production. Most broken trees remained in the vegetated region, but scoured regions behind the sea wall or on the down-slope regions of sand dunes produced large pieces of tree debris. In contrast, the pine trees in the inland zone were found to trap much debris. This trapping function should be utilized more in future designs. A numerical model that includes the breaking phenomena of trees estimates the capacity of a coastal forest to reduce the washout region of houses by around 150 m. This is not a negligible component of the mitigation measures when a large tsunami occurs and overflows the sea embankment.
根系结构、物理树特征和土壤剪切强度对翻倒柳和臭椿核桃最大抗弯矩的影响
DOI：
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发表时间：
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期刊：
Landscape and Ecological Engineering (Now printing)
影响因子：
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作者：
Norio Tanaka;M.B. Samarakoon;Junji Yagisawa
通讯作者：
Junji Yagisawa