Tsunami occur for many reasons: 1. a serious explosion of a volcano near the sea. 2. What is the ground under the sea or near the shore, the avalanche sled. 3. the agreement in the Gulf caused by stones or the ocean. 4. the movement of plate tectonics with new labour pouring plate investigated? Ground, which may be the occurrence of landslides, collapse or the crust down. Be pushed up, down or collapse. 5. a large underwater explosion occurred from nuclear
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