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ALOS Captures First Image of Fujiyama
Paris, France (SPX) Feb 16, 2006 This image of Mt. Fujiyama has been compiled from the first data acquired by Japan's Advanced Land Observing Satellite, or ALOS, which was launched on Jan. 24. ESA is supporting ALOS as a Third Party Mission, meaning the space agency is using its ground systems and expertise to acquire, process and distribute data from the satellite to users. At an elevation of 3,776 meters (12,388 feet), Mt. Fuji is Japan's highest mountain. A volcano that has been dormant since its last eruption in 1707, it is located near the southern coast of the main island of Honshu and straddles the prefectures of Yamanashi and Shizuoka about 100 kilometers (65 miles) west of Tokyo. The front of the image displays detailed streets and rivers in the Kofu Basin, and Motosu Lake - one of five lakes making up the Fuji Five Lake region - is in the center right. The Fuji-Subaru road, which leads to the top of the mountain from Motosu Lake, can also be seen. Motosu Lake, featured on Japan's 5000-yen note, is the westernmost of the five lakes, all of which were formed by lava flows. It has a circumference of 13 kilometers (8 miles). The other four lakes are Kawaguchi, Yamanaka, Sai and Shoji. Thousands of people ascend Mt. Fuji every year, usually during July and August - the official climbing season - when there is no snow. The mountain hike is divided into 10 stations, with paved roads going to the fifth station, around 1,400 to 2,400 meters (about 4,600 feet to 7,900 feet) above sea level. ESA acquired the image data as part of the first functional verification test since the satellite's launch. The Panchromatic Remote-sensing Instrument for Stereo Mapping, or PRISM - one of the three instruments on board ALOS - observed the mountain on Feb. 14. The PRISM is an optical sensor, with three independent optical systems for acquiring terrain and altitude data simultaneously, allowing for three-dimensional images with a high accuracy and frequency. The other two instruments are the Phased Array type L-band Synthetic Aperture Radar, or PALSAR - a microwave radar instrument that can acquire observations through any weather conditions - and the Advanced Visible and Near Infrared Radiometer type-2. or AVNIR-2, designed to chart land cover and vegetation in visible and near-infrared spectral bands. Related Links ALOS ESA
Southern Greenland Glaciers Dumping Ice Faster
St Louis MO (SPX) Feb 16, 2006NASA researchers report the amount of ice that Greenland's southern glaciers are dumping into the Atlantic Ocean has almost doubled during the last five years. "We are witnessing enormous changes, and it will take some time before we can determine what is happening," lead researcher Eric Rignot, with the space agency's Jet Propulsion Laboratory, told reporters at a briefing Thursday. |
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