1988年3月18日晨5时34分,发生了震源在东京都正下方的大地震。在千叶、宇都宫、馆山等地记录到的烈度为4(日本气象厅烈度标度,中震),在东京、横滨、水户、甲府等地记录到的烈度为3(弱震),以关东地方为中心,从东北至近畿地区,均有大幅度晃动。据气象厅的观测推断,震源在东京都东部北纬35°42′、东经139°42′,震源深度为90公里,震级6.1。据说这是自1926年以来第一次清楚地记录到东京都中心正下方6级以上的地震。由于该地震的影响,东海道新干线东京— At 05:34 on March 18, 1988, a major earthquake hit directly beneath Tokyo occurred. The intensity recorded in Chiba, Utsunomiya and Tateyama is 4 (Japan Meteorological Agency intensity scale, moderate earthquake), and the intensity recorded in Tokyo, Yokohama, Mito and Kofu is 3 (Weak Earthquake) With the Kanto area as the center, from the northeast to the Kinki area, there has been a substantial shake. According to the Meteorological Agency’s observation, the focal point is located at 35 ° 42’N and 139 ° 42’E in the east of Tokyo, with a focal depth of 90 km and a magnitude of 6.1. This is said to be the first time since 1926 that an earthquake of magnitude 6 or greater directly below the Tokyo Metropolitan Center is clearly recorded. Due to the earthquake, Tokaido Shinkansen Tokyo -