вставьте артикль, где tsunami is natural phenomenon consisting of series of waves generated when water in lake or sea is rapidly displaced on massive scale. it is also very large dangerous ocean wave caused by underwater explosion, earthquake, etc. earthquakes, landslides, volcanic eruptions and large meteorite impacts all have the potential to generate tsunami. effects of tsunami can range from unnoticeable to magnitude 9.0 2004 indian ocean earthquake triggered series of lethal tsunamis on december 26, 2004 that killed over 310,000 people (more than 220,000 in indonesia alone), making it deadliest tsunami in recorded history. tsunami killed people over area ranging from immediate vicinity of quake in indonesia, thailand and north-western coast of malaysia to thousands of kilometres away in bangladesh, india, sri lanka, maldives, and even as far as somalia, kenya and tanzania in eastern africa. disaster prompted huge worldwide effort to help victims of tragedy, with hundreds of millions of dollars being raised for disaster relief.