系统研究了玄武岩台地区滑坡灾害的基本特征。
The fundamental character of the landslide in the basalt platform region is studied systematically.
仙台地区上一次有记录的巨大海啸发生在869年。
基于这个历史记录，日本的地震学家过去并不认为仙台地区受到大地震的威胁。
Given that history, seismologists in Japan did not consider great earthquakes to be a threat to the Sendai area.
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