Tsunami Devastation - Sumatra. Check and double-click the 2004 Indian Ocean Tsunami Propagation Animation placemark, and click on it to open its balloon and watch how the tsunami propagated from the epicenter across the Indian Ocean. Close this placemark, and then check and double-click the 2004 Indian Ocean Tsunami Travel Times overlay. How long did it take the tsunami to first arrive at the Problem 26 placemark on Sri Lanka? Note that each line represents 1 hour. a. 1 hr b. 1.5 hr c. 2 hr d. 5 hr .