Unmanned subs could be key to finding vanished jet if searchers can narrow crash zone

April 2, 2014 8:56 AM

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The area off western Australia where search planes and aircraft are looking for the Malaysian jet slopes from about 2,600 feet (800 metres) to about 9,800 feet (3,000 metres) deep. But part of the zone drops into the narrow Diamantina trench, about 19,000 feet (5,800 metres) down.

"Let's hope the wreck debris has not landed over this escarpment. It's a long way to the bottom," said Robin Beaman, a marine geologist at Australia's James Cook University.

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