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Firefighters Target Stubborn Blazes in Northern California
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Friday, July 25 2008 @ 08:24 PM CDT Contributed by: Admin
Views: 128
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(inan.info)-By Mike O'Sullivan
Junction City, California
Firefighters in California are making progress against 30 major wildfires still burning around the state. Since the end of June, crews have contained more than 2,000 blazes in what officials have called the biggest fire episode in California's history. Mike O'Sullivan reports from Junction City, California, the effort is the first round in a battle that is expected in coming months.
The fires were started by lightning. By early July, they had spread throughout the state, and came six weeks ahead of California's usual fire season.
Firefighters have contained most of the blazes, which have scorched more than 400,000 hectares of wilderness areas, but stubborn fires still burn near Junction City, a town of 800 in the northern part of the state. Some neighborhoods remain evacuated.
Personnel and equipment arrived from
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read more (431 words)
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Scientists Test System to Forecast Flash Floods along Colorado's Front Range
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Tuesday, July 22 2008 @ 08:17 PM CDT Contributed by: Admin
Views: 123
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(inan.info)-
People living near vulnerable creeks and rivers along Colorado's Front Range may soon get advance notice of potentially deadly floods, thanks to a new forecasting system being tested this summer by the National Center for Atmospheric Research (NCAR) in Boulder, Colo.
Known as the NCAR Front Range Flash Flood Prediction System, it combines detailed atmospheric conditions with information about stream flows to predict floods along specific streams and catchments.
"The goal is to provide improved guidance about the likelihood of a flash flood event many minutes out to an hour or two before the waters start rising," says NCAR scientist David Gochis, one of the developers of the new forecasting system. "We want to increase the lead time of a forecast, while decreasing the uncertainty about whether a flood will occur."
Funding to create the system came from the National Science Foundation (NSF), which is NCAR's sponsor, as well as the National Oceanic and Atmospheric Administration.
"This project is an excellent example of using basic research findings to improve forecasts important to saving lives," said Cliff Jacobs, program director in NSF's Division of Atmospheric Sciences.
The Front Range, because of its steep topography and intense summer storms, is unusually vulnerable to summertime flash floods. Such floods have claimed the lives of hundreds of people and accounted for hundreds of millions of dollars in damages throughout the region's history.
Flash floods are difficult to predict because they happen suddenly, often the result of heavy cloudbursts that may stall over a particular watershed.
Forecasters can give a few hours' notice that weather conditions might lead to flooding, and radars can detect heavy rain within minutes.
But whether a flood hits a specific river or creek also depends on soil, topographic, and hydrologic conditions that are characteristic to particular watersheds. Thus, emergency managers may not know that a flash flood is imminent until the waters begin to rise.
The goal of the NCAR system is to provide officials at least 30 minutes warning of
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read more (297 words)
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Newly Born Twin Stars Are Far From Identical
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Saturday, June 21 2008 @ 05:23 AM CDT Contributed by: Admin
Views: 136
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(inan.info)-NSF-funded basic research may cause astronomers to re-examine the masses and ages of young stars and star formation theories
Photo of twin stars observed in the Orion Nebula, 1,500 light years from the Earth.
Twin stars observed in the Orion Nebula, 1,500 light years from the Earth.
Credit and Larger Version
View a video interview with astronomer Keivan Stassun.
Two stars, each with the same mass and in orbit around each other, are twins that one would expect to be identical. So astronomers were surprised when they discovered that twin stars in the Orion Nebula, a well-known stellar nursery 1,500 light years away, were not identical at all. In fact, these stars exhibited significant differences in brightness, surface temperature and possibly even size.
The study, which is published in the
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read more (199 words)
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