Satellites see through snow to steer safely across Antarctica.
Snow knowing: the south pole is a navigation nightmare.
Linda marks the spot where a hidden ice crevasse swallowed a snow tractor.
© SPOT Image Corp.
Satellite images that expose perilous crevasses now reveal safe overland routes to the South Pole. Carolyn Merry of Ohio State University in Columbus has pieced together high-resolution satellite pictures that see through the snow, to map the passable Pole1.
Since a snow tractor, floundered into a hidden fissure in 1991, all supplies have been flown into the US South Pole research station. Safe transport routes might be a cheaper way to bring in bulk provisions or building materials for the new polar station currently being built.
"The surface was white snow for miles around; we could see no relief," recalls tractor driver Quinton Rhoton: "Then gravity struck."
In 1991, Rhoton and his companion were driving a snow tractor out from McMurdo dragging a sled full of explosives too dangerous to ship by air. They plummeted into a hidden crevasse. "Shattered glass from the cab window and snow streamed into the cab," remembers Rhoton. Wedged by a V-shaped gash in the ice, 16 tonnes of cargo were left teetering on the icy lip above them.
Without handholds on the sheer walls, the two waited in the tractor for several hours before other group members hauled them out with ropes.
The crevasse was hidden under an ice bridge - undetectable to the eye - but visible in Cherrys satellite images. The map suggests that the crevasse formed upstream of the crash site, as stresses on the ice appear insufficient at that spot. "I would have told them not to go there," says Merry.
HELEN PEARSON | © Nature News Service
Receding glaciers in Bolivia leave communities at risk
20.10.2016 | European Geosciences Union
UM researchers study vast carbon residue of ocean life
19.10.2016 | University of Miami Rosenstiel School of Marine & Atmospheric Science
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.
In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...
'Ferroelectric' materials can switch between different states of electrical polarization in response to an external electric field. This flexibility means they show promise for many applications, for example in electronic devices and computer memory. Current ferroelectric materials are highly valued for their thermal and chemical stability and rapid electro-mechanical responses, but creating a material that is scalable down to the tiny sizes needed for technologies like silicon-based semiconductors (Si-based CMOS) has proven challenging.
Now, Hiroshi Funakubo and co-workers at the Tokyo Institute of Technology, in collaboration with researchers across Japan, have conducted experiments to...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
21.10.2016 | Health and Medicine
21.10.2016 | Information Technology
21.10.2016 | Materials Sciences