Arid
DOI10.1017/S0954102098000054
Soil temperatures and stability of ice-cemented ground in the McMurdo Dry Valleys, Antarctica
McKay, CP; Mellon, MT; Friedmann, EI
通讯作者McKay, CP
来源期刊ANTARCTIC SCIENCE
ISSN0954-1020
出版年1998
卷号10期号:1页码:31-38
英文摘要

Year-round temperature measurements at 1600 m elevation during 1994 in the Asgard Range Antarctica, indicate that the mean annual frost point of the ice-cemented ground, 25 cm below the surface, is -21.7 +/- 0.2 degrees C and the mean annual frost point of the atmosphere is -27.5 +/- 1.0 degrees C. The corresponding mean annual temperatures are -24.9 degrees C and -23.3 degrees C. These results imply that there is a net flux of water vapour from the ice to the atmosphere resulting in a recession of the ice-cemented ground by about 0.4-0.6 mm yr(1). The level of the ice-cemented permafrost is about 12 cm below the level of dry permafrost. The summer air temperatures would have to increase about 7 degrees C for thawing temperatures to just reach the top of the subsurface ice. Either subsurface ice at this location is evaporating over time or there are sporadic processes that recharge the ice and maintain equilibrium over long timescales.


英文关键词climate change dry valleys ice-cemented ground Linnaeus Terrace
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000072760800005
WOS关键词CRYPTOENDOLITHIC MICROBIAL ENVIRONMENT ; ROSS DESERT ; PERMAFROST ; REGION
WOS类目Environmental Sciences ; Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Environmental Sciences & Ecology ; Physical Geography ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/135327
作者单位(1)NASA, Ames Res Ctr, Div Space Sci, Moffett Field, CA 94035 USA;(2)Florida State Univ, Dept Biol Sci, Tallahassee, FL 32306 USA
推荐引用方式
GB/T 7714
McKay, CP,Mellon, MT,Friedmann, EI. Soil temperatures and stability of ice-cemented ground in the McMurdo Dry Valleys, Antarctica[J],1998,10(1):31-38.
APA McKay, CP,Mellon, MT,&Friedmann, EI.(1998).Soil temperatures and stability of ice-cemented ground in the McMurdo Dry Valleys, Antarctica.ANTARCTIC SCIENCE,10(1),31-38.
MLA McKay, CP,et al."Soil temperatures and stability of ice-cemented ground in the McMurdo Dry Valleys, Antarctica".ANTARCTIC SCIENCE 10.1(1998):31-38.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[McKay, CP]的文章
[Mellon, MT]的文章
[Friedmann, EI]的文章
百度学术
百度学术中相似的文章
[McKay, CP]的文章
[Mellon, MT]的文章
[Friedmann, EI]的文章
必应学术
必应学术中相似的文章
[McKay, CP]的文章
[Mellon, MT]的文章
[Friedmann, EI]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。