9 items | 3 visits
movie video geology geologic time rocks plate tectonics
Updated on Jun 03, 10
Created on May 27, 09
Category: Science
URL:
"Scientists have been trying to create a meandering river in the lab for nearly 100 years. Christian Braudrick and Bill Dietrich of University of California, Berkeley, have finally found a recipe. The researchers reported the finding this week in the Proceedings of the National Academy of Sciences. Go into the lab to see the mini meandering river flow."
"Tucked in a shallow valley in northeastern Pennsylvania is a mysterious geologic feature: 16 acres of sandstone boulders. Science Friday took a trip to Hickory Run State Park's "boulder field" and spoke with Megan Taylor, environmental education specialist, about why the rocks collected there."
"The Disappearing Mississippi Delta
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Mississippi Delta image acquired on May 24, 2001 by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA's Terra satellite. NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team
Rising sea levels and not enough sediment replenishment may make much of the Mississippi Delta 'drown' by the year 2100, according to a new study. Writing this week in the journal Nature, researchers examined rates of sediment deposition in the Mississippi delta over the past 12,000 years. Once upon a time, plenty of sediment flowed downstream to form the Delta -- but now, due to dams and levees, substantially less sediment ends up in the Delta region. The authors estimate that between 18 and 24 billion tons of sediment would be required by the year 2100 to sustain the existing surface area of the Mississippi delta as sea levels rise -- more sediment than exists within the entire Mississippi. We'll find out more. "
ROV Jason gets a close view of magma explosions and lava flows on West Mata volcano (May 2009).
9 items | 3 visits
movie video geology geologic time rocks plate tectonics
Updated on Jun 03, 10
Created on May 27, 09
Category: Science
URL: