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Latest Geomorphology Stories

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2010-01-25 12:21:02

A major increase in maximum ocean wave heights off the Pacific Northwest in recent decades has forced scientists to re-evaluate how high a "100-year event" might be, and the new findings raise special concerns for flooding, coastal erosion and structural damage. The new assessment concludes that the highest waves may be as much as 46 feet, up from estimates of only 33 feet that were made as recently as 1996, and a 40 percent increase. December and January are the months such waves are most...

2010-01-22 11:36:00

WASHINGTON, Jan. 22 /PRNewswire-USNewswire/ -- James Wilbur Fondren Jr. was sentenced today to 36 months in prison, followed by two years of supervised release, for charges involving espionage and making false statements to the FBI. David Kris, Assistant Attorney General for National Security; Neil H. MacBride, U.S. Attorney for the Eastern District of Virginia; and John Perren, Acting Assistant Director in Charge of the FBI's Washington Field Office, made the announcement. Fondren, 62,...

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2009-12-14 07:10:00

Australians can learn much from their deserts and from desert people about how to cope with climate change and scarce resources. That's the message of a new book released today by the Desert Knowledge CRC and CSIRO Publishing. "Dry Times: Blueprint for a Red Land" argues that desert plants, animals and people have been surviving and thriving for thousands of years on scarce resources and uncertain climates "“ and they have the systems to cope with uncertainty which urban society lacks....

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2009-10-23 14:22:44

While most people head to Myrtle Beach for vacation, a group of scientists have been hitting the famous South Carolina beach for years to figure out how to keep the sand from washing away. Although they studied only a limited segment of beach, their work is a model for beach preservation that can apply elsewhere. And with talk of "balancing the sand budget" and money saved on restoration, their findings sound financial. The study will be presented to scientists from around the world at the...

2009-10-01 12:24:20

Australia has been stripped bare of vegetation to expose the surface that lies beneath. Scientists from CSIRO's Water for a Healthy Country Flagship have removed approximately 90 percent of Australia's vegetation cover from satellite images of the continent to produce the most detailed available Digital Elevation Model (DEM) of its topography. "The DEM will revolutionize geological applications, land-use studies, soil science, and much more," CSIRO's Dr John Gallant said in an address today...

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2009-09-30 09:54:10

Vegetation and sand found to be essential in stream life In a feat of reverse-engineering, Christian Braudrick of University of California at Berkeley and three coauthors have successfully built and maintained a scale model of a living meandering gravel-bed river in the lab. Their findings point to the importance of vegetation to reinforce the banks and, surprisingly, to the importance of sand in healthy meandering river life. The significance of vegetation for slowing erosion and reinforcing...

2009-06-09 15:48:40

Despite the great difficulties in quantifying all the environmental and human factors that affect sediment discharge by rivers into the sea, a group of Catalan scientists has compiled data to describe and evaluate the solid sediment discharge from nine river basins in Catalonia "“ the Ter, Foix, Gaia, Bes³s, Llobregat, Francolí, Tordera, Muga, and Fluvia. "This was a slow job, with its fair share of difficulties", Miquel Canals, one of the authors of the study and...

2009-05-12 11:55:00

Sediments released by many of the world's largest river deltas to the global oceans have been changed drastically in the last 50 years, largely as a result of human activity, says a Texas A&M University researcher who emphasizes that the historical information that can be gathered from sediment cores collected in and around these large deltaic regions is critical for a better understanding of environmental changes in the 21st century.Thomas Bianchi, a professor in the Department of...

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2009-05-06 14:30:04

Global warming could result in massive droughts and flooding in Tibet, posing threats to the wellbeing of millions of people, according to the head of the China Meteorological Bureau. According to China's Xinhua news agency, Zheng Guoguang reported on Wednesday that climate change has "accelerated glacial shrinkage, and the melting glaciers have swollen Tibet's lakes." "If the warming continues, millions of people in western China will face floods in the short term and drought in the long...

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2009-05-05 10:33:22

The Yucca Mountain crest in Nevada, USA has been proposed as a permanent site for high level radioactive waste. But a new study, already published as an article in press by Elsevier's journal Geomorphology and recently included in the Research Highlights of Nature, shows that there may be erosion of the crest. Kurt Stwe of the University of Graz, Austria, together with his colleagues, used a simple numerical landscape evolution model to explore the rate of erosional decay of the Yucca...


Latest Geomorphology Reference Libraries

Desert greening
2013-04-25 16:10:03

Desert greening is made up of any number of methods used to revitalize deserts. So far, only arid and semi-arid desert are meant when using this expression. The icy deserts and other types are considered to be unsuitable. The different methods include landscaping methods to reduce evaporation, erosion, consolidation of topsoil, temperature, sandstorms and more, permaculture in general, planting trees, regeneration of salty, polluted, or degenerated soils, floodwater retention and...

Theodore Roosevelt National Park
2013-04-18 01:20:13

Theodore Roosevelt National Park is located in western North Dakota in the United States. The park contains 70,446 acres of land that is separated into three distinct badland areas known as the Elkhorn Ranch Unit, the South Unit, and the North Unit. Roosevelt  first visited the area in 1883, while hunting for bison, and is said to have “fallen in love” with the badlands. After investing a large sum of money into the Maltese Cross Ranch, Roosevelt had his own cabin built, which he later...

Badlands National Park
2013-03-05 09:07:20

Badlands national Park is located in the southwest region of South Dakota. It holds 242,756 acres of land, with 64,144 acres comprising a protected wilderness area. The park was designated as a national monument in 1929 and established in 1939, but attained national park status in 1978. The Stronghold Unit area of the park is managed by the National Park Service and the Oglala Lakota tribe and holds many sights including those used for Ghost Dances in the 1890’s, a bomb and gunnery range...

22_88c53d3e3f6ea92cc8e0c22906f90b30
2009-07-06 18:07:31

A drainage divide, water divide, divide, or watershed is the line that separates neighboring drainage basins. In flat country the divide may be invisible (just a notional line on the ground either side of which water starts its journey to different waterways). While, in hilly country, the divide lies along peaks and ridges. Drainage divides are important geographical, and sometimes political boundaries. Roads and railways often follow divides to minimize slopes and marshes and rivers....

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Word of the Day
lunula
  • A small crescent-shaped structure or marking, especially the white area at the base of a fingernail that resembles a half-moon.
This word is a diminutive of the Latin 'luna,' moon.
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