三陸沖地震 さんりくおきじしん Sanriku offshore earthquake (esp. June 15, 1896, March 3, 1933, and March 11, 2011); Sanriku earthquake n Advanced ➥
アウターライズ地震 アウターライズじしん outer-rise earthquake; earthquake in the region seaward of a deep-sea trench n Advanced ➥