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
Climate satellite: Tracking methane with robust laser technology
22.06.2017 | Fraunhofer-Gesellschaft
How reliable are shells as climate archives?
21.06.2017 | Leibniz-Zentrum für Marine Tropenforschung (ZMT)
An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.
Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...
Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.
Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...
Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.
As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...
Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.
With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...
Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine
Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...
19.06.2017 | Event News
13.06.2017 | Event News
13.06.2017 | Event News
26.06.2017 | Life Sciences
26.06.2017 | Physics and Astronomy
26.06.2017 | Information Technology