Geology News And Research - October 2008 Archives
New surge ends a decade of stability
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Researchers have developed a numerical model that can re-create the state of Switzerland's Rhône Glacier as it was in 1874 and predict its evolution until the year 2100. This is the longest period of time ever modeled in the life of a glacier, involving complex data analysis and mathematical techniques. The work will serve as a benchmark study for those interested in the state of glaciers and their relation to climate change.
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The thickness of sea ice in large parts of the Arctic declined by as much as 19 percent last winter compared to the previous five winters, according to data from ESA's Envisat satellite.
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 | Inside your laptop is a small accelerometer chip, there to protect the delicate moving parts of your hard disk from sudden jolts.It turns out that the same chip is a pretty good earthquake sensor, too -- especially if the signals from lots of them are compared, in order to filter out more mundane sources of laptop vibrations, such as typing. ...> Full Article |
Ancient water findings can be used to predict future changes during greenhouse conditions
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 | Recent mapping of a number of raised beach ridges on the north coast of Greenland suggests that the ice cover in the Arctic Ocean was greatly reduced some 6000-7000 years ago. The Arctic Ocean may have been periodically ice free. ...> Full Article |
 | Lake Toya is a volcanic caldera lake in Shikotsu-Toya National Park on Hokkaido Island in north of Japan.
Photo: Dr. Bertram Boehrer/UFZ ...> Full Article |
Thousands of years after the lava cooled, soil scientists conduct sophisticated mapping of the resulting soil landscape.
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A U.S.-led, multinational team of scientists this month will investigate one of the Earth's last major unexplored places, using sophisticated airborne radar and ground-based seismologic tools to virtually peel away more than 2.5 miles of ice covering an Antarctic mountain range that rivals the Alps in elevation.
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 | A team led by Livermore scientists has helped reconcile the differences between simulated and observed temperature trends in the tropics. ...> Full Article |
 | The 2008 ozone hole - a thinning in the ozone layer over Antarctica - is larger both in size and ozone loss than 2007 but is not as large as 2006. ...> Full Article |
For the first time, seismic signals that precede a volcanic eruption have been simulated and visualized in 3-D under controlled pressure conditions in a laboratory.
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Scientists focus on hurricane-prone Gulf of Mexico and Caribbean Sea to assess likely changes
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 | New research suggests that a Tibetan plateau edge might have been preserved for thousands of years by ice during glacial advances and by glacial debris deposited at the mouth of many Tsangpo tributaries during warmer times when glaciers retreated. ...> Full Article |
 | changes began as early as the middle of the 18th century ...> Full Article |
Evidence suggests that 'sick Earth' extinctions more likely
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 | New geological research into development of the second largest gold and copper deposit in the world. ...> Full Article |
 | fter reaching the second-lowest extent ever recorded last month, sea ice in the Arctic has begun to refreeze in the face of autumn temperatures, closing both the Northern Sea Route and the direct route through the Northwest Passage. ...> Full Article |
3 decades of data point to troubling century ahead for Gulf bays
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 | Ice core and ocean deposit comparisons show complex links between carbon dioxide levels, ocean currents and climate; may help explain past, present and future climate trends ...> Full Article |
The sudden thinning in 1997 of Jakobshavn Isbra, one of Greenland's largest glaciers, was caused by subsurface ocean warming
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 | Researchers to develop a method for creating an accurate picture of Greenland's shrinking ice cap ...> Full Article |
Follows sea-level rise and fall between 542 and 251 million years ago
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Following a record-breaking season of arctic sea ice decline in 2007, NASA scientists have kept a close watch on the 2008 melt season. Although the melt season did not break the record for ice loss, NASA data are showing that for a four-week period in August 2008, sea ice melted faster during that period than ever before.
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 | New North African climate reconstructions reveal three 'green Sahara' episodes during which the present-day Sahara Desert was almost completely covered with extensive grasslands, lakes and ponds over the course of the last 120.000 years. ...> Full Article |
 | Researchers have discovered the oldest known ice in North America, and that permafrost may be a significant touchstone when looking at global warming. ...> Full Article |
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Fish can recognize a face based on UV pattern alone
Ancient DNA from rare fossil reveals that polar bears evolved recently and adapted quickly
'Anaconda' meets 'Jurassic Park': Study shows ancient snakes ate dinosaur babies
Mars Express heading for closest flyby of Phobos
Artificial bee silk a big step closer to reality
Predicting the fate of stem cells
Artificial foot recycles energy for easier walking
New fiber nanogenerators could lead to electric clothing
What drives our genes? Researchers map the first complete human epigenome
Juggling enhances connections in the brain
Tracking down the human 'odorprint'
Fill 'er up - with algae
Scientists discover quantum fingerprints of chaos
Researchers help identify cows that gain more while eating less
Researchers show how far South American cities moved in quake
New evidence hints at global glaciation 716.5 million years ago
Earthquake in Chile - a complicated fracture
Methane releases from Arctic shelf may be much larger and faster than anticipated
Oldest measurement of Earth's magnetic field reveals battle between sun and Earth for our atmosphere
Experts reaffirm asteroid impact caused mass extinction
Rapid response science missions assess potential for another major Haiti earthquake
Research team breaks the ice with new estimate of glacier melt
Scientists locate apparent hydrothermal vents off Antarctica
Were short warm periods typical for transitions between interglacial and glacial epochs?
Chile quake occurred in zone of 'increased stress'
Volcano monitoring will target hazard threat to Marianas, US military and commercial jets