日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

CHINA> National
China polar expedition mapping Antarctica
(Xinhua)
Updated: 2009-10-26 21:41

China polar expedition mapping Antarctica
This November 24, 2008 file photo shows China's ice breaker Xuelong or "Snow Dragon" around the Antarctica during her 25th expedition to Antarctica. [Xinhua]

ABOARD XUELONG: Chinese scientists from the country's 26th Antarctic expedition are expected to complete the world's first land cover map of the Antarctica at the end of this year.

It will be the most accurate map of the continent, presenting various land features, they told Xinhua correspondent aboard Xuelong (Snow Dragon) icebreaker in a recent interview.

The research team will conduct wide range of field spectral collection on the Antarctica to provide data for the map.

Related readings:
China polar expedition mapping Antarctica Xuelong begins ice-breaking visit to Taiwan
China polar expedition mapping Antarctica Ice breaker Xuelong blocked during Antarctica expedition
China polar expedition mapping Antarctica Xuelong returns in triumph
China polar expedition mapping Antarctica Xuelong arrives at Changcheng Station in Antarctic

The map, with the application of high resolution remote sensing technology, will for the first time in the history show the distribution of key features on the continent, including sea ice, snow, blue ice, rocks, soil marshes, lakes and ice crevasse.

Remote sensing technology is one of the most effective ways of mapping. It has been widely used in China's polar expeditions during the past decade and has made great contributions to Antarctic studies in the fields of mapping, biology research and communication.

The map is also based on 1,073 remote sensing images acquired from the US satellite Landsat mainly during the austral summer from 1999 to 2002, Cheng Xiao, deputy dean of the College of Global Change and Earth System Science, Beijing Normal University, told Xinhua via email.

"The precision of the map is 15 meters, about 20 times of former Antarctic maps made by other countries," Cheng said. "It will greatly advance our geographic knowledge of the Antarctica."

The map will provide not only more accurate ground parameters for scientists to forecast global change or global warming with climate system models, but also important data for detection on the change of Antarctica land cover in a long run, Cheng said.

The 26th expedition team began its journey on October 11 from Shanghai and sailed into Australia's Coral Sea on Sunday. A total of 251 scientists, workers and logistics staff joined the team for the half-year-long research expedition on the icebreaker. The scientists will stay on the icy continent until April 10 next year.

 

主站蜘蛛池模板: 久久激情av| 午夜久久久久久久久久影院 | 日本www网站| 最色成人网 | 大地资源高清播放在线观看免费 | 韩国一级黄色录像 | 成人高清视频在线观看 | 久久人体视频 | 久久精品5| 女人的天堂网站 | 久久久成人精品 | 久久久久亚洲 | 国产精品久久久久久亚洲毛片 | 男女污污网站 | 国产成人免费观看视频 | 一二三区在线 | 亚洲国产一区二区三区在线观看 | 色女人av | 欧美亚洲高清 | 成人做爰www免费看视频网站 | 成人免费影院 | 日韩午夜精品视频 | 狠狠躁夜夜躁xxxxaaaa | 日韩一级片网址 | 亚洲激情欧美 | 色婷婷国产精品久久包臀 | 成人午夜在线观看视频 | 日韩黄色在线 | 亚洲一区二区观看 | 四虎永久免费在线 | 视频精品一区 | 免费中文字幕日韩欧美 | 99视频网 | 中文字幕av观看 | 欧洲免费av| 性视频在线 | 日韩久久一区二区 | 免费成人在线网站 | 日本欧美在线观看 | 国产精品福利一区 | 亚洲精选av|