スマトラ沖おき地じ震しんMeanings1nounSumatra-Andaman earthquake (2004)Refers specifically to the 2004 earthquake off the coast of Sumatra that triggered the Indian Ocean tsunami.スマトラ沖おき地じ震しんは2004年ねん12月がつ26日かに発はっ生せいした。The Sumatra-Andaman earthquake occurred on December 26, 2004.