日韩午夜精品视频,欧美私密网站,国产一区二区三区四区,国产主播一区二区三区四区

 

China polar expedition mapping Antarctica

0 CommentsPrint E-mail China Daily, October 27, 2009
Adjust font size:

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]

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] 

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.

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.

PrintE-mail Bookmark and Share

Comments

No comments.

Add your comments...

  • Your Name Required
  • Your Comment
  • Comments are moderated and generally will be posted if they are on-topic and not abusive.
Send your storiesGet more from China.org.cnMobileRSSNewsletter
主站蜘蛛池模板: 左云县| 平塘县| 凌源市| 镇坪县| 滕州市| 呼伦贝尔市| 伊春市| 松阳县| 双流县| 台中市| 丰宁| 长汀县| 蛟河市| 西乡县| 田阳县| 肃宁县| 弥勒县| 浠水县| 伊金霍洛旗| 深泽县| 德钦县| 武义县| 牟定县| 麦盖提县| 定襄县| 扬州市| 汝城县| 元谋县| 汝城县| 象州县| 南陵县| 卢氏县| 红安县| 新干县| 当雄县| 句容市| 津南区| 富平县| 洪洞县| 明溪县| 通江县|