Japan earthquake Investigation Committee, said, Nagano Prefecture 30 years of this fault zone, 14% probability of occurrence of 8 earthquake.

日本地震调查委员会表示，长野县的这个断层地带30年内有14%的概率发生8级地震。

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Through systematic investigation of field geology, drilling records, geophysics and isotope geology, a Permian basite zone in the basin is confirmed.

通过野外地质、钻井地质、地球物理和同位素地质的综合调查研究，确定了盆地内部存在一条三叠纪基性岩带。

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Detailed analyses of satellite images and field investigation have revealed that the active Kaidu River fault zone on the southern margin of the basin is a strike-slip fault zone.

详细的卫星图像分析和野外调查表明活动断层(开都河断层带)主要分布在盆地的南缘，具典型的走滑断层特征。

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