The Star Online: Metro: Central
The Star Online: Metro: Central |
| Undersea volcanoes, huge seas complicate MH370 search Posted: 25 Mar 2014 11:48 PM PDT SYDNEY: Searchers racing to find flight MH370's "black box" face daunting hurdles ranging from undersea volcanoes to mountainous seas as they operate in one of Earth's most remote locations, experts said Wednesday. They warned there was no guarantee that an unprecedented international search operation involving the militaries of six nations would succeed in retrieving wreckage of the doomed Malaysian Airlines plane which disappeared on March 8 with 239 people on board. Australian Prime Minister Tony Abbott on Wednesday said the search zone - in the southern Indian Ocean some 2,500 kilometres (1,550 miles) southwest of Perth - was "as close to nowhere as it's possible to be". University of New South Wales oceanographer Erik van Sebille said the crash site was in an area known as "the Roaring Forties", notorious among mariners for its hostile seas. "In general, this is the windiest and waviest part of the ocean," he said. "In winter, if a storm passes by you can expect waves of 10-15 metres." The Soufan Group, a US-based strategic security intelligence consultancy, likened searching for debris in such conditions to "finding a drifting needle in a chaotic, colour-changing, perception-shifting, motion-sickness-inducing haystack". "A random wave might obscure the object when the eyes pass over it; sun glare off the water may blind momentarily; a look two degrees to the left when the object is most visible may cause the moment to pass," it said. Even if the search does find verifiable wreckage from MH370 on the surface, geologist Robin Beaman said underwater volcanoes would probably hamper efforts to recover the black box flight recorder from the depths. Beaman said the Southeast Indian Ocean Ridge cut directly through the search area, meaning the sea bed was rugged and constantly being reshaped by magma flows. He said the ridge was an "extremely active" range of volcanoes sitting at an average depth of 3,000 metres (1.86 miles), which marked the point where the Antarctic and Australasian tectonic plates collide. "It's very unfortunate if that debris has landed on the active crest area, it will make life more challenging," Beaman, who specialises in underwater geology at Queensland's James Cook University, told AFP. "It's rugged, it's covered in faults, fine-scale gullies and ridges, there isn't a lot of sediment blanketing that part of the world because it's fresh (in geological terms)." Finding the flight and cockpit voice data will be crucial in determining what caused the Boeing 777 to deviate inexplicably off course and fly thousands of miles in the wrong direction. Malaysia believes the plane was deliberately diverted by someone on board. University of Sydney aviation expert Peter Gibbens said searchers faced a race against time, with acoustic signals from the black box set to fall silent in about two weeks when its battery expires. "They're going to be pushing it with time, the chances are stacked against them," he said. In a sign of the level of cooperation achieved in the search, the US military has sent a hi-tech black box locator to Perth which will be reportedly fitted to an Australian navy ship so it can scour the likely crash site. Van Sebille said the remote location at least meant searchers did not have to contend with the large collections of random garbage that litter most other oceans, reducing the likelihood they would be distracted by false leads. "This area of ocean is virtually pristine," he said, explaining that ocean currents in the area naturally moved flotsam north, away from the search area. He said this meant the large objects that had been sighted by air crews were likely to have come from MH370. "If the plane would have gone down in any of the other ocean basins I would be much more sceptical that the pieces of debris spotted were actually part of the plane," he said. -AFP |
| Mystery of MH370 may never be solved, say experts Posted: 25 Mar 2014 09:00 AM PDT KUALA LUMPUR: Even if searchers are able to miraculously pluck Malaysia Airlines flight MH370's "black box" from the depths of the vast Indian Ocean, experts say it may not solve one of aviation's greatest mysteries. Planes, ships and state-of-the-art tracking equipment are hunting for any trace of the passenger jet, which Malaysia said crashed in the forbidding waters after veering far from its intended course. They face a huge challenge locating the Boeing 777's "black box", which holds vital clues to determining what caused the plane to vanish. But experts believe the flight data recorder and cockpit voice recorder may not yield answers on the riddle of how and why the plane diverted an hour into the flight, and embarked on a baffling journey to the southern reaches of the Indian Ocean. The data recorder details the aircraft's path and other mechanical information for the flight's duration, and "should provide a wealth of information", US-based aviation consultancy firm Leeham Co said in a commentary. But the cockpit voice recorder – which could reveal what decisions were made by those at the helm and why – retains only the last two hours of conversations before the plane's demise. That means potentially crucial exchanges surrounding the initial diversion, which took place halfway between Malaysia and Vietnam, will be lost. "Clearly, it won't reveal anything that happened over the Gulf of Thailand – this will have been overwritten by the end of MH370," it said. British aviation expert Chris Yates said that even if the black boxes are found, "it seems unlikely that we will get that answer" of why the plane ended up thousands of kilometres off course. "We still have no idea as to the mental state of the pilot and co-pilot, we have no idea if somebody managed to get into the cockpit to seize the aircraft, and we've certainly had no admissions of responsibility since this whole episode started," he told BBC television. Paul Yap, an aviation lecturer at Singapore's Temasek Polytechnic, said: "With the new satellite data, I think we can say it is a chessboard," he said of the wide search area. — AFP |
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