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石子进来:青藏地区卫星图片(图)

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楼主
发表于 2008-9-10 06:38:50 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式

 
 

On May 24, 2002, MODIS captured this image of the sparsely vegetated, lake-dotted Tibetan Plateau (top). To the south, the snow-covered peaks of the Himalaya Ranges ring the Plateau. To the far south (lower right), India's Brahmaputra River glints in the sun.

 

喜马拉雅成为空气污染的一个屏障--喜马拉雅为深褐色,绿,白的部分;青藏高原在其北部

The Himalaya MountainRange serves as a barrier for air pollution shown in this true-color TerraMODIS image acquired December 2nd, 2002. To the north of the Himalayas,which appear dark brown, green, and white, is southwestern China’sTibetan Plateau (Qing Zang Gaoyuan). Straddling the Himalayas on thewestern side of the image is Nepal. To the immediate east of Nepal areabout 65 kilometers of the Indian Sikkim and West Bengal territories. Indian territories then curve southwest between Nepal and Bangladesh(bottom center), and southeast between Bhutan (right of center) andBangladesh. On the southeastern edge of the image is Myanmar, mostlycovered in low clouds

Air pollution is a serious problem the world over, but is especiallynoticeable in this area of central and south Asia. It worsens the qualityof life, contributes to cloud acidification and global climate change, and can affect crop productivity, forest growth, biodiversity, buildings, and cultural monuments. In this image, air pollution appears as agrayish-blue pall most concentrated over India and Bangladesh, though italso extends into southern Nepal, southern Bhutan, and westernMyanmar.

MODIS also detected two small fires, marked in red, in this scene; one on the southern border of Bhutan with eastern India, and the other ineastern India northwest of upper Myanmar. Although fires do contribute toair pollution by way of smoke and ash, these fires have no visible smokeplumes and are much too small to contribute much to regional airpollution.

 

 

(西藏东南部---右下角,拉萨河)

This spaceborne radar image covers a rugged mountainous area of southeast Tibet, about 90 kilometers (56 miles) east of the city of Lhasa. In the lower right corner is a wide valley of the Lhasa River, which is populated with Tibetan farmers and yak herders, and includes the village of Menba. Mountains in this area reach about 5800 meters (19,000) feet above sea level, while the valley floors lie about 4300 meters (14,000 feet) above sea level. The Lhasa River is part of the Brahmaputra River system, one of the larger rivers in southeast Asia eroding the Tibetan Plateau. The rugged relief in this area reflects the recent erosion of this part of the Plateau. Most of the rocks exposed outside of the river valleys are granites, which have a brown-orange color on the image. In the upper left center of the image and in a few other patches, there are some older sedimentary and volcanic rocks that appear more bluish in the radar image. Geologists are using radar images like this one to map the distribution of different rock types and try to understand the history of the formation and erosion of the Tibetan Plateau. This image was acquired by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR) on April 10, 1994, on board the space shuttle Endeavour. North is toward the upper left. The image is 49.8 kilometers by 33.6 kilometers (30.9 miles by 20.8 miles) and is centered at 30.2 degrees north latitude, 92.3 degrees east longitude. The colors assigned to the radar frequencies and polarizations are as follows: red is L- band, horizontally transmitted, vertically received; green is C-band, horizontally transmitted, vertically received; and blue is the ratio of C-band to L-band, horizontally transmitted and received. SIR-C/X-SAR, a joint mission of the German, Italian and United States space agencies, is part of NASA’s Earth Science Enterprise.

 

 

青藏高原及喜马拉雅的一部分

The Tibetan Plateau and a portion of the Himalayan Mountain chain are captured in this MISR stereo image from May 14, 2000 (Terra orbit 2153). The image is a composite of data from the instrument's vertical and 46-degree forward cameras, and has been oriented with north at the left. Viewing the image in 3-D requires the use of red/blue glasses with the red filter placed over your left eye.

On the left side of this image is the Tibetan Plateau, the highest plateau on Earth and often called the "Roof of the World". Near the lower left is lake Paiku Co, at an altitudeof 4591 meters. The border between Tibet and Nepal marks the eastern extent of the magnificent Himalayan Mountains, home to many of the world's highest peaks. Himalaya is a Sanskrit word meaning "the Abode of Snow". Mt. Everest (8848 meters) and Mt. Makalu (8481 meters) are visible near the top center of the image.

Further to the south is the Mahabharat Range, separated from the Himalayas by the "River of Gold", the Sun Kosi. Rounding out our tour from north to south, on the righthand side of the image, is the densely populated Indo-Gangetic Plain of northern India.

MISR was built and is managed by NASA's Jet Propulsion Laboratory, Pasadena, CA, for NASA's Office of Earth Science, Washington, DC. The Terra satellite is managed by NASA's Goddard Space Flight Center, Greenbelt, MD. JPL is a division of the California Institute of Technology.

 

 

 

The Taklimakan Desert in northwest China is a vast region of sand desert sitting in a depression between two high, rugged mountain ranges. Seen in this true-color MODIS image from October 27, 2001, the Taklimakan's rolling sand dunes stretch out over about 125,000 square miles in the Xinjiang region of China. The desert is hemmed in to the north by the snow-covered Tien Shan Mountain range and to the south by the rugged Kunlun Mountains. At the lower left corner of the image is the Karakoram Mountain range, where the world's second highest mountain, K2, casts a blue shadow. At the bottom of the image lies the Tibetan Plateau. Desertification and shifting sand dunes are a major concern for the farmers and grazers who live at the desert's edge.

 



 

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沙发
发表于 2008-9-10 08:34:26 | 只看该作者

[:))][>:D<][>:D<]谢谢,谢谢!


   谢谢,谢谢!





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谨记我GG的真言:爱我,喂我,别离开我
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板凳
 楼主| 发表于 2008-9-10 08:57:28 | 只看该作者

为何大笑哈?


有用吗?

 

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地板
发表于 2008-9-10 09:10:26 | 只看该作者

人在江湖靠朋友,因为清兄乐开怀![>:D<]


  人在江湖靠朋友,因为清兄乐开怀!





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5#
发表于 2008-9-10 09:11:20 | 只看该作者

欢迎小秋望也进课堂[>:D<]


  欢迎小秋望也进课堂





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6#
发表于 2008-9-10 20:33:10 | 只看该作者

想念石子儿[:-*][>:D<]


  想念石子儿





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