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2011年3月11日,日本当地时间14时46分,在宫城县以东太平洋海域发生里氏9.0级地震,震源深度20公里。此次地震震级之高,以及震后的海啸、火灾、核事故等一系列次生灾害,使日本东部地区出现宛如世界末日般的景象,举世震惊。在经历如此巨大的地震破坏后,日本作为当今世界上通信产业最发达的国家之一,其通信网络也不可避免的出现了大面积的故障,日本国内几
On March 11, 2011, at 14:46 local time in Japan, a magnitude 9.0 earthquake hit the Pacific Ocean east of Miyagi Prefecture with a focal depth of 20 km. The high magnitude of the earthquake, as well as a series of secondary disasters such as tsunami, fire and nuclear accident after the earthquake, shocked the world as if it were the end of the world. After experiencing such a devastating earthquake, Japan, as one of the most advanced countries in the world in terms of communications industry, has inevitably experienced large-scale failures in its communications network. In Japan, how many