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Space & Earth science / Earth Sciences news 1234

Study: Future snowmelt in West twice as early as expected; threatens ecosystems and water reserves

July 15, 2008 | User rating: 2.8 / 5 after 8 vote(s) | No comments yet

According to a new study, global warming could lead to larger changes in snowmelt in the western United States than was previously thought, possibly increasing wildfire risk and creating new water management ...


For Toy-Like NASA Robots in Arctic, Ice Research Is Child's Play

July 15, 2008 | User rating: not shown ( 1 vote(s) ) | No comments yet

Several snowmobiles navigated speedily over arctic ice and snow in Alaska's outback in late June. This scene might seem ordinary except that the recently unveiled snowmobiles are unmanned, autonomous, toy-size ...


Scientists close in on source of X-rays in lightning

July 15, 2008 | User rating: 4.4 / 5 after 13 vote(s) | No comments yet

University of Florida and Florida Institute of Technology engineering researchers have narrowed the search for the source of X-rays emitted by lightning, a feat that could one day help predict where lightning will strike.


Tunguska catastrophe: Evidence of acid rain supports meteorite theory

July 15, 2008 | User rating: 4.5 / 5 after 34 vote(s) | User comments: 5

(PhysOrg.com) -- The Tunguska catastrophe in 1908 evidently led to high levels of acid rain. This is the conclusion reached by Russian, Italian and German researchers based on the results of analyses of peat ...


Undersea volcanic rocks offer vast repository for greenhouse gas, says study

July 14, 2008 | User rating: not shown ( 2 vote(s) ) | User comments: 3

A group of scientists has used deep ocean-floor drilling and experiments to show that volcanic rocks off the West Coast and elsewhere might be used to securely imprison huge amounts of globe-warming carbon ...


Icelandic volcanoes help researchers understand potential effects of eruptions

July 14, 2008 | User rating: 4 / 5 after 9 vote(s) | User comments: 1

(PhysOrg.com) -- For the first time, researchers have taken a detailed look at what lies beneath all of Iceland's volcanoes – and found a world far more complex than they ever imagined.


Researchers Find Ancient Evidence of 'Snowball Earth'

July 11, 2008 | User rating: 4.4 / 5 after 32 vote(s) | User comments: 2

LSU scientist Huiming Bao, along with colleagues from UCLA and China, recently discovered some of the first atmospheric evidence in support of the “Snowball Earth” hypothesis. This theory suggests that Earth was entirely ...


Research team draws 150-meter ice core from McCall Glacier

July 11, 2008 | User rating: 3.5 / 5 after 8 vote(s) | User comments: 1

A 150-meter ice core pulled from the McCall Glacier in the Arctic National Wildlife Refuge this summer may offer researchers their first quantitative look at up to two centuries of climate change in the region.


Long Wait Before Next China Quake?

July 10, 2008 | User rating: not shown ( 2 vote(s) ) | No comments yet

A new analysis of the setting for May's devastating earthquake in China shows that the quake resulted from faults with little seismic activity--and that similar events in that area occur, on average, only ...


Methane Formation in the Oceans: New Pathway Discovered

July 10, 2008 | User rating: 4.5 / 5 after 10 vote(s) | No comments yet

(PhysOrg.com) -- A new pathway for methane formation in the oceans has been discovered, with significant potential for advancing our understanding of greenhouse gas production on Earth, scientists believe.


Researchers distinguish waves from mine collapses from other seismic activities

July 10, 2008 | User rating: not shown ( 1 vote(s) ) | No comments yet

Researchers have devised a technology that can distinguish mine collapses from other seismic activity. Using the large seismic disturbance associated with the Crandall Canyon mine collapse last August, Lawrence Livermore ...


Wilkins Ice Shelf hanging by its last thread

July 10, 2008 | User rating: 3.3 / 5 after 27 vote(s) | User comments: 12

The Wilkins Ice Shelf is experiencing further disintegration that is threatening the collapse of the ice bridge connecting the shelf to Charcot Island. Since the connection to the island in the image centre ...


Geologists Discover Magma and Carbon Dioxide Combine to Make 'Soda-Pop' Eruption

July 10, 2008 | User rating: 4 / 5 after 8 vote(s) | No comments yet

This discovery overturns a longtime belief by geologists, who thought that carbon dioxide was incapable of dissolving in magma, said Calvin Barnes, professor of geosciences and lead investigator.


Ocean Wind Power Maps Reveal Possible Wind Energy Sources

July 09, 2008 | User rating: 4.6 / 5 after 9 vote(s) | User comments: 1

Efforts to harness the energy potential of Earth's ocean winds could soon gain an important new tool: global satellite maps from NASA. Scientists have been creating maps using nearly a decade of data from ...


Early earthquake warning: New tools show promise

July 09, 2008 | User rating: 4.3 / 5 after 14 vote(s) | No comments yet

Using remarkably sensitive new instruments, seismologists have detected minute geological changes that preceded small earthquakes along California's famed San Andreas Fault by as much as 10 hours.


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