- 1、本文档共7页,可阅读全部内容。
- 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
- 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
查看更多
Climate science:? The dustiest place on Earth
NaturePublished online: 13 April 2005; | doi:10.1038/434816a
Dust clouds can cool the Earth and halt hurricanes. But the worlds biggest dust source was until recently a war zone. Jim Giles joins one of the few research teams to make the trip.
Jim Giles
C. BRISTOW
Midday, near Chicha, northern Chad. Its the dustiest time of day in the dustiest place on Earth. A dirty-white haze drifts in through the open windows of the jeep, coating our clothes with powder. Outside, in the 40 °C heat, theres an argument going on.Adrian Chappell and Charlie Bristow have come a very long way, to a place where no one else wants to be, to have their dispute: the Bodélé depression, a low-lying region on the eastern fringe of the Sahara. Almost nothing grows here, amid the dunes, gravelly ground and the great plumes of dust that blot out the Sun. Even the local desert people avoid the area.But its confusion, not discomfort, that is causing Earth scientists Chappell and Bristow to disagree. After three hot and bumpy days of driving from Chads capital, NDjamena, they find themselves in a desert with a surprisingly compact, crusty surface. Were covered in dust, yet its not clear how the very solid ground were standing on can produce the clouds that surround us.This simple and surprising observation will be the source of much discussion over the next two weeks. The team of seven scientists — one of the few groups of researchers ever to visit the Bodélé — will see their tents buried by dust storms, become accustomed to digging jeeps out of the sand, and develop a taste for goat stew and roast gazelle — the only fare in this barren land.Their efforts will also shed light on one of the major players in Earths climate. Dust affects storm formation and cloud cover, and provides minerals that fertilize the ocean and jungles thousands of kilometres away. Features like the Bodélé turn out to be of planetary significance, says team member Ri
您可能关注的文档
- 地下车库设计指南.doc
- 电路焊接的基本技术.doc
- 对会计谨慎性与审计谨慎性的比较研究_兼议审计谨慎性的涵义.pdf
- 多层次培训体系建设与实施11.doc
- 儿童品牌服装招商加盟新商机学步鞋上市.pdf
- SoftwareDevelopmentforAUV教程.pdf
- SPACEPLANNINGBASICS教程.pdf
- trainacity教程.pdf
- 学习课件第二届全明星周末篮球比赛策划书.docx
- 返璞归真—情商与压力管理11.doc
- 2021-2022学年湖南省常德市安乡县四年级上学期期中语文真题及答案.pdf
- 2023-2024学年河南省南阳市社旗县四年级上学期期中数学真题及答案.pdf
- 2022-2023学年云南省曲靖市四年级下学期期末数学真题及答案.pdf
- 2021-2022学年河南省周口市鹿邑县二年级下册月考语文真题及答案.pdf
- 2018年河南焦作解放区教师招聘考试真题及答案.pdf
- 2019年江西公务员行测考试真题及答案-乡镇.pdf
- 2019中国石油报社应届高校毕业生招聘试题及答案解析.pdf
- 光大银行招聘应届毕业生能力素质测试笔试真题及答案.pdf
- 2024年广西百色教师招聘考试模拟题及答案.pdf
- 2021-2022学年浙江绍兴诸暨市五年级上册语文期末试卷及答案.pdf
文档评论(0)