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Science Indonesia earthquake: Why no tsunami this time?

Wednesday's Indonesia earthquake was similar in magnitude to the devastating 2004 quake, but there was no tsunami. The difference? Location. 

By Staff writer / April 11, 2012

Heri Juanda/AP

A powerful earthquake and aftershock struck the Indian Ocean off of northern Indonesia Wednesday, triggering tsunami watches and evacuations throughout the Indian Ocean basin, from Australia to Kenya.