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Geotimes November 2005 Megan Sever |
The Increasing Costs of U.S. Natural Disasters Population trends, mitigation efforts and federal disaster relief policies all contribute to encouraging high-risk land use and ultimately to making our society more vulnerable to the costs of natural disasters. |
Geotimes November 2005 Naomi Lubick |
Louisiana's Marshland Mess Even before the past season's devastating hurricanes, Louisiana's wetlands were in rough shape. More than a century of building dams, levees and canals to control the Mississippi River changed the wetlands, limiting sediment and leading to soil compaction from the loss of vegetation. |
Geotimes November 2005 Sara Pratt |
Super-Rotation for Earth's Core A new earthquake study supports the 1996 finding that Earth's inner core is spinning faster than the planet's mantle and crust -- at a rate detectable on human timescales, but about one-third of the rate first suggested. |
Geotimes November 2005 Naomi Lubick |
Shift in Chile's Seismic History New research documenting tsunami deposits in the Nazca plate region is resetting the seismic clock. |
Geotimes November 2005 Sara Pratt |
Middens Mark Southwest Cold Snap A study of ancient rodent trash piles in Grand Canyon caves has confirmed that the American Southwest experienced the climatic period known as the Younger Dryas -- a cold snap lasting from 12,900 to 11,600 years ago. |
Geotimes November 2005 Megan Sever |
New Appalachian Tale New research indicates that conventional thinking about the timing of the building of the Appalachian Mountains may be incorrect. |
Geotimes November 2005 Kathryn Hansen |
Earthly Origin for Desert Formation The Richat Structure in the Maur Adrar Desert is frequently photographed from space. The formation resembles an impact crater, but researchers now say that the famous feature may be the result of magma fluids dissolving sedimentary rocks about 100 million years ago. |
Geotimes November 2005 Kathryn Hansen |
Salting a Stagnant Ocean In its Third Assessment Report, the Intergovernmental Panel on Climate Change flagged the potential sudden collapse of the thermohaline circulation in the Atlantic, which warms Europe to its current habitable climate, as a significant source of concern. |
Geotimes November 2005 John A. Kelmelis |
The Geosciences and Future Foreign Policy The U.S. Geological Survey (USGS) and the U.S. Department of State have paired up in a project to identify emerging earth science findings that are both reliable and have foreign policy implications. |
Geotimes November 2005 Steve Quane |
A Volcanologist Enters Energy Politics The tragedies in the Gulf Coast exposed to the world an issue that has been of concern for years -- the lack of a comprehensive plan to reduce U.S. dependence on nonrenewable resources, including oil. |
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