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
Monitoring lava lake levels in Congo volcano
16.05.2018 | Seismological Society of America
Ice stream draining Greenland Ice Sheet sensitive to changes over past 45,000 years
14.05.2018 | Oregon State University
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...
A team led by Austrian experimental physicist Rainer Blatt has succeeded in characterizing the quantum entanglement of two spatially separated atoms by observing their light emission. This fundamental demonstration could lead to the development of highly sensitive optical gradiometers for the precise measurement of the gravitational field or the earth's magnetic field.
The age of quantum technology has long been heralded. Decades of research into the quantum world have led to the development of methods that make it possible...
Cardiovascular tissue engineering aims to treat heart disease with prostheses that grow and regenerate. Now, researchers from the University of Zurich, the Technical University Eindhoven and the Charité Berlin have successfully implanted regenerative heart valves, designed with the aid of computer simulations, into sheep for the first time.
Producing living tissue or organs based on human cells is one of the main research fields in regenerative medicine. Tissue engineering, which involves growing...
A team of scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg investigated optically-induced superconductivity in the alkali-doped fulleride K3C60under high external pressures. This study allowed, on one hand, to uniquely assess the nature of the transient state as a superconducting phase. In addition, it unveiled the possibility to induce superconductivity in K3C60 at temperatures far above the -170 degrees Celsius hypothesized previously, and rather all the way to room temperature. The paper by Cantaluppi et al has been published in Nature Physics.
Unlike ordinary metals, superconductors have the unique capability of transporting electrical currents without any loss. Nowadays, their technological...
02.05.2018 | Event News
13.04.2018 | Event News
12.04.2018 | Event News
18.05.2018 | Power and Electrical Engineering
18.05.2018 | Information Technology
18.05.2018 | Information Technology