Free Newsletters - Space - Defense - Environment - Energy - Solar - Nuclear
..
. Earth Science News .




DISASTER MANAGEMENT
Mini-sub to dive again after aborting first MH370 search
by Staff Writers
Perth, Australia (AFP) April 15, 2014


First foray of mini-sub finds nothing of interest in MH370 hunt
Perth, Australia (AFP) April 15, 2014 - The first dive by a mini-submarine hunting for Malaysian jet MH370 detected nothing of interest, with the mission aborted after breaching the machine's maximum operating depth, the US Navy said Tuesday.

The unmanned Autonomous Underwater Vehicle (AUV) Bluefin-21 was undamaged and set for a second sonar sweep of the Indian Ocean seabed during the day, weather permitting.

"To account for inconsistencies with the sea floor, the search profile is being adjusted to extend the sonar search for as long as possible," a US statement said.

"Bluefin-21 was unable to complete its first search mission after six hours, due to breaching maximum operating depth."

The vehicle was recovered and six hours' worth of data downloaded.

"The data was analysed and no objects of interest were found," the statement said.

"The vehicle is in good material and working condition."

The navy estimated it would take the AUV from six weeks to two months to scan the entire search area.

The submarine equipped with sonar deployed Monday night from the Australian ship Ocean Shield, which has spearheaded the hunt for the Boeing 777 that vanished on March 8 with 239 people aboard.

"The AUV was programmed to fly at an altitude of 30 meters over the ocean floor; however, when the vehicle reached its maximum operating depth of 4,500 meters (15,000 feet), its built-in safety feature returned it to the surface," the navy said.

Australia's Joint Agency Coordination Centre said the AUV had been due to spend 16 hours collecting data.

A mini-sub hunting missing Flight MH370 was set to sweep the Indian Ocean seabed again Tuesday after cutting short its first mission, as Malaysia vowed to reveal any 'black box' data found.

The unmanned submarine equipped with sonar gear was deployed Monday night from the Australian ship Ocean Shield, which has spearheaded the hunt for the Boeing 777 that vanished on March 8 with 239 people aboard.

But the dive by the Bluefin-21 detected nothing of interest before it automatically aborted the mission after breaching its maximum operating depth, the US Navy said in a statement.

The Australian agency coordinating the search said the Bluefin-21 "exceeded its operating depth limit of 4,500 metres (15,000 feet) and its built-in safety feature returned it to the surface".

The unmanned Autonomous Underwater Vehicle was undamaged and set for a second sonar sweep during the day, weather permitting, officials said.

US Navy Captain Mark Matthews said the vehicle had exceeded programmed operational limits and automatically resurfaced.

"In this case the vehicle's programmed to fly 30 metres over the floor of the ocean to get a good mapping of what's beneath," he told CNN from Perth.

"It went to 4,500 metres and once it hit that max depth, it said 'This is deeper than I'm programmed to be', so it aborted the mission."

- Search zone adjusted -

Officials said the crew would now refine the task to cope with the depth encountered.

"To account for inconsistencies with the sea floor, the search profile is being adjusted to extend the sonar search for as long as possible," the US Navy statement said.

Australia's Joint Agency Coordination Centre chief Angus Houston announced Monday officials would end three weeks of listening for signals from the plane's black boxes and launch the submarine operation.

The mini-sub would conduct a sonar survey of the silty ocean floor for 16 hours at a time in hopes of finding some wreckage from the Malaysia Airlines flight which vanished en route from Kuala Lumpur to Beijing.

The US navy estimated it would take the Bluefin-21 from six weeks to two months to scan the entire search area, which has been deduced using satellite data and the detection of electronic pulses linked to black box recorders which were last heard a week ago.

Houston has described the detections as the best lead in the hunt for the plane, and added Monday that an oil slick had also been sighted in the search area.

It would take several days to test a sample of the oil ashore, but Houston said he did not think it was from one of the many ships involved in the hunt.

- Malaysia vows transparency -

The cause of the plane's disappearance, after being diverted hundreds of miles off course, remains a mystery. No debris has been found despite an enormous search involving ships and planes from several nations.

It is 39 days since the plane vanished, presumably crashing into the southern Indian Ocean, and the batteries powering the black box tracker beacons had a life of only around 30 days.

Ocean Shield detected four signals linked to the black boxes, but the last ping came on Tuesday last week and officials suspect the batteries are now dead.

Houston has stressed the enormous difficulties of working at great depths in such a remote location and cautioned about the difficulties of finding the black boxes.

If they are ever found, Malaysia's Transport Minister pledged Tuesday to make public any data recovered, as the government battles widespread criticism over the transparency of its investigation.

"It's about finding the truth. And when we... find out the truth, definitely we have to reveal what's in the black box," Hishammuddin Hussein told reporters.

"So there is no question of it not being released."

The Malaysian government has been tight-lipped about its ongoing investigation into the disappearance of the jet, adding to the anger and frustration of relatives.

It has come under fire for a seemingly chaotic initial response, while the scarcity of official information on MH370 has prompted questions over its transparency.

Hishammuddin said at the weekend that Malaysia's attorney general had been sent abroad to confer with the International Civil Aviation Organisation and determine which country would have custody of the black box, if it is ever found.

But he shrugged off the importance of the custody issue on Tuesday.

"I don't think it's important who gets custody as far as I'm concerned," he told reporters.

Malaysian authorities insist they are hiding nothing but need to be cautious on commenting on ongoing investigations.

Hishammuddin also said an "international investigation team" that Malaysia plans to set up to probe MH370's disappearance would be transparent and operate in accordance with international standards.

.


Related Links
Bringing Order To A World Of Disasters
A world of storm and tempest
When the Earth Quakes






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





DISASTER MANAGEMENT
New towns going up in developing nations pose major risk to the poor
Denver CO (SPX) Apr 11, 2014
Satellite city projects across the developing world are putting an increasing number of poor people at risk to natural hazards and climate change, according to a new study from the University of Colorado Denver. Throughout Asia, Africa and Latin America `new towns' are rapidly being built on the outskirts of major cities with the goal of relieving population pressures, according to study a ... read more


DISASTER MANAGEMENT
Italian navy says nearly 900 migrants rescued

Solomons flood victims 'terrified' after quakes

Survey finds majority of Malaysians distrust govt on MH370

New towns going up in developing nations pose major risk to the poor

DISASTER MANAGEMENT
Refreshingly cool, potentially toxic

Vanguard Space Technologies Antenna Reflectors on Amazonas Satellite Launch

Headwall Extends Global Reach in Asia/Pac and Israel

A new twist for better steel

DISASTER MANAGEMENT
Mini-sub deploys to scour ocean depths in MH370 hunt

Reef fish arrived in two waves

Sunken logs create new worlds for seafloor animals

A small coral-eating worm may mean big trouble for reefs

DISASTER MANAGEMENT
Growth of Antarctic ice sheet triggered warming in the Southern Ocean during Miocene

New technology helps paleontologists see Ice-Age bee in intricate detail

Rare leafcutter bee fossils reveal Ice Age environment at the La Brea Tar Pits

La Brea Tar Pit fossil research shows climate change drove evolution of Ice Age predators

DISASTER MANAGEMENT
Climate: Farming emissions to rise 30% by 2050

Oyster aquaculture could significantly improve Potomac River estuary water quality

GM crops under the microscope at international debate

Farming for improved ecosystem services seen as economically feasible

DISASTER MANAGEMENT
Increase in activity at DRC's Nyamulagira volcano

Magnitude 7.5 quake strikes off Solomon Islands: USGS

Cyclone warning lifted on Australia's Barrier Reef coast

Death toll rises to 23 in Solomons floods

DISASTER MANAGEMENT
US Marines headed to Chad park to fight poaching

Top Nigerian Islamic body accuses military over Muslim deaths

DR Congo rebel crackdown should not endanger hostages: charity

French forces move east in new phase of C. Africa operation

DISASTER MANAGEMENT
Researchers say Neanderthals were no strangers to good parenting

New method confirms humans and Neandertals interbred

Indigenous societies' 'first contact' typically brings collapse, but rebounds are possible

Technofossils are an unprecedented legacy left behind by humans




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement All images and articles appearing on Space Media Network have been edited or digitally altered in some way. Any requests to remove copyright material will be acted upon in a timely and appropriate manner. Any attempt to extort money from Space Media Network will be ignored and reported to Australian Law Enforcement Agencies as a potential case of financial fraud involving the use of a telephonic carriage device or postal service.