News / Asia

Malaysia Plane Search Tests Limits of Ocean Mapping Technology

In this Thursday, April 17, 2014 photo provided by the Australian Defense Force, Evan Tanner, bottom right, and Chris Minor from Phoenix International conduct pre-deployment checks.
In this Thursday, April 17, 2014 photo provided by the Australian Defense Force, Evan Tanner, bottom right, and Chris Minor from Phoenix International conduct pre-deployment checks.
The next phase in the search for a missing Malaysia Airlines passenger jet, believed to be at the bottom of the Indian Ocean, is likely to test the limits of existing technology.
Australian officials say they are consulting with counterparts in China, Malaysia and the United States before deciding on what direction to take next in the search for Malaysia Airlines Flight 370, missing since March 8.
Australia’s prime minister Tony Abbott says a new search strategy will be needed if a U.S. Navy robotic submarine is unable to locate any trace of the 63-meter long jetliner on the seabed floor. Abbot told reporters Wednesday that the search will not be abandoned “until we have done everything we can to solve this mystery.”
Australia’s defense minister, David Johnston, says an announcement is expected next week and it is likely to involve “more capable” side-scan sonar devices.
Ron Allum, an Australian who designs vehicles for deep sea exploration, tells VOA such technology as described by the defense minister has a proven track record.
“That’s a vehicle that was used to find the wrecks of Titanic, Bismarck and HMS Sydney," Allum explained. "I thought that would have been probably brought into play earlier.”
Allum has dived in a submarine to a depth of 5,000 meters to help film the wreck of the Bismarck, a German battleship sunk by the British in the North Atlantic in 1941.
The U.S. Navy’s Bluefin-21 submersible has combed nearly all of a 310-square-kilometer search area on the bed of the Indian Ocean, off Australia’s west coast, near where signals believed to be from the plane’s black box were previously detected. So far, there has been no indication that its three-dimensional sonar map of the ocean floor has revealed anything relevant.
Much of the seabed where the submersible has been deployed is uncharted and as deep as seven kilometers.
Allum says existing equipment’s maximum operating depth is around six kilometers.
“A towed device is going to be really at the limit of the cable, as well," he noted, "because if you lower a steel cable into the deepest part of the ocean it will break under its own weight. So the cable length can become an issue.”
But Allum says looking for the plane’s fuselage at that depth would be easier with a towed device than relying on the remotely operated robot submersible vehicles.
“With a towed side scan you’ve got immediate feedback, it’s not limited by batteries," Allum explained. "It doesn’t have to come back to the surface to be downloaded. It can operate 24/7 behind a ship.”
An air search involving 10 planes was suspended for a second consecutive day Wednesday due to poor visibility and rough seas below.
However a dozen ships continued to search an area covering 38,000 square kilometers. No verified debris or oil from the plane has been spotted since it veered off course on March 8. Photographs of an unidentified two-and-a-half meter long metallic object which washed ashore 10 kilometers east of Augusta in western Australia are being analyzed by specialists.
The Malaysia Airlines flight, from Kuala Lumpur to Beijing, was carrying 239 passengers and crew. An unprecedented analysis of routine engine diagnostic signals from the Boeing 777 jet to satellites led searchers to a remote section of ocean far off the airliner’s scheduled course.

Steve Herman

A veteran journalist, Steve Herman is VOA's Southeast Asia Bureau Chief and Correspondent, based in Bangkok.

You May Like

Video Russia’s Syrian Escalation Tests Obama’s Crisis Response

Critics once again question whether president has been slow to act on Syrian conflict, thus creating opening for powers like Russia More

Ancient African DNA Shows Mass Migration Back Into Africa

First genetic analysis of ancient human remains in Africa suggests massive migration from north around time of Egyptian empire More

NASA: Pluto Has Blue Sky

New photos also reveal the presence of water ice More

This forum has been closed.
Comment Sorting
by: alu from: china
May 16, 2014 7:22 AM
I think it is so foolish to burn billions of dollars in searching that jet by Aus. which is only suspected in a unconfirmed place. Actually, maybe it is more efficient to think how to force Malaysia officers to speak all the truth clearly. Their behavior implies me they are not worth being trusted.

by: meanbill from: USA
April 25, 2014 12:48 PM
ONE must wonder, if Malaysian Flight 380, "the Boeing 777-2H6ER an original Super Ranger" isn't on a big airfield, in a big hanger, being repainted with the extra fuel tanks, for a covert mission on a particular country?
A Boeing 777-2H6ER Super Ranger can fly over 10,823 nautical miles, (20,044 km), __ (and if it was hijacked, why crash it in the ocean?) __ and if it's not in the ocean, where is it, and for what purpose would it be use for? --- Makes you think, doesn't it?

by: LieutenantCharlie from: USA
April 23, 2014 9:25 PM
If there was no debris field floating along with the current, then there was no ocean crash,....100% of ocean crashes have a debris field that sometimes lasts for months, modern aircraft the seats are floatation devices, the pillows for your head float,....hundreds of other items from the kitchen to the cargo hole float, where is the debris field?
In Response

by: red phan from: us
April 24, 2014 2:26 PM
have to start all over again Malaysia Flight MH370 May Have Landed Somewhere Else; Search May Have to Start Over From Vietnam's jungle
Ho Chi Minh (trail)

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Hungary Criticized for Handling of Refugeesi
Henry Ridgwell
October 08, 2015 8:02 PM
Amnesty International has accused Hungary of breaking multiple international and European human rights laws in its handling of the refugee crisis. As Henry Ridgwell reports, thousands of migrants and refugees continue to travel through the Balkans to Hungary every day.

Video Hungary Criticized for Handling of Refugees

Amnesty International has accused Hungary of breaking multiple international and European human rights laws in its handling of the refugee crisis. As Henry Ridgwell reports, thousands of migrants and refugees continue to travel through the Balkans to Hungary every day.

Video Iraqi-Kurdish Teachers Vow to Continue Protest

Sixteen people were injured when police used tear gas and rubber bullets to disperse teachers and other public employees who took to the streets in Iraq’s Kurdish north, demanding their salaries from the Kurdish Regional Government (KRG). VOA’s Dilshad Anwar, in Sulaimaniya, caught up with protesting teachers who say they have not been paid for three months. Parke Brewer narrates his report.

Video Syrian Village Community Faces Double Displacement in Lebanon

Driven by war from their village in southwestern Syria, a group of families found shelter in Lebanon, resettling en masse in a half-built university to form one of the biggest settlements of its kind in Lebanon. Three years later, however, they now face being kicked out and dispersed in a country where finding shelter as a refugee can be especially tough. John Owens has more for VOA from the city of Saida, also known as Sidon.

Video Bat Colony: Unusual Tourist Attraction in Texas

The action hero Batman might be everyone’s favorite but real bats hardly get that kind of adoration. Put more than a million of these creatures of the night together and it only evokes images of horror. Sarah Zaman visited the largest urban bat colony in North America to see just how well bat and human get along with each other.

Video Device Shows Promise of Stopping Motion Sickness

It’s a sickening feeling — the dizziness, nausea and vomiting that comes with motion sickness. But a device now being developed could stop motion sickness by suppressing certain signals in the brain. VOA’s Deborah Block reports.

Video Making a Mint

While apples, corn, and cranberries top the list of fall produce in the US, it’s also the time to harvest gum, candy, and toothpaste—or at least the oil that makes them minty fresh. Erika Celeste reports from South Bend, Indiana on the mint harvest.

Video Activists Decry Lagos Slum Demolition

Acting on a court order, authorities in Nigeria demolished a slum last month in the commercial capital, Lagos. But human rights activists say the order was illegal, and the community was razed to make way for a government housing project. Chris Stein has more from Lagos.

Video TPP Agreed, But Faces Stiff Opposition

President Barack Obama promoted the Trans-Pacific Partnership on Tuesday, one day after 12 Pacific Rim nations reached the free trade deal in Atlanta. The controversial pact that would involve about 40 percent of global trade still needs approval by lawmakers in respective countries. Zlatica Hoke reports Obama is facing strong opposition to the deal, including from members of his own party.

Video Ukranian Artist Portrays Putin in an Unusual Way

As Russian President Vladimir Putin was addressing the United Nations in New York last month, he was also being featured in an art exhibition in Washington. It’s not a flattering exhibit. It’s done by a Ukrainian artist in a unique medium. And its creator says it’s not only a work of art - it’s a political statement. VOA’s Tetiana Kharchenko has more.

Video Nano-tech Filter Cleans Dirty Water

Access to clean water is a problem for hundreds of millions of people around the world. Now, a scientist and chemical engineer in Tanzania (in East Africa) is working to change that by creating an innovative water filter that makes dirty water safe. VOA’s Deborah Block has the story.

Video Demand Rising for Organic Produce in Cambodia

In Cambodia, where rice has long been the main cash crop, farmers are being encouraged to turn to vegetables to satisfy the growing demand for locally produced organic farm products. Daniel de Carteret has more from Phnom Penh.

Video Botanists Grow Furniture, with Pruning Shears

For something a bit out of the ordinary to furnish your home, why not consider wooden chairs, crafted by nature, with a little help from some British botanists with an eye for design. VOA’s Jessica Berman reports.

VOA Blogs