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Putting Out Wildfires with Help from Space Satellites
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장바울
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2014-03-22 01:37:36, 조회 : 2,049 |
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Putting Out Wildfires with Help from Space Satellites
Before emergency-response crews deploy to a wildfire, they must first assess what areas are in the line of the blaze, which areas are the highest priority to protect, and where it is safe for them to deploy. Gathering this information has never been easy. Emergency workers have typically counted on ground crews and aircraft to get as close to the blaze as possible—i.e., not very close—and radioing in coordinates on where to set up operations. The U.S. Forest Service and the U.S. Geological Survey are now making this process much easier and safer with help from space satellites.
A Landsat 8 satellite, launched by NASA in May 2013, uses infrared imaging to scan all of North America for fire activity, burned vegetation, and vegetation that appears untouched. The Forest Service's Remote Sensing Applications Center in Salt Lake City, Utah, receives the satellite’s data transmissions and converts them into digital maps that the emergency-response teams consult as they go to work reining in the fires.
This satellite information stream is interactive and real-time, so the emergency-response teams can use it to figure out not only what areas are burned, but how severe the burning is. This helps them plan out fire extinction and, afterwards, forest-restoration. Carl Albury, a Forest Service remote-sensing specialist, reports creating maps for about a hundred fires every season from the Landsat data. He credits the satellite program with giving fire-response teams \"a sense for how much they need to do, and where they need to do it.\" - Rick Docksai
Source: U.S. Forest Service—Remote Sensing Application Center
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