干旱区生态环境知识资源中心(Arid): SOIL AND PERMAFROST IN THE ROSS SEA REGION OF ANTARCTICA: STABLE OR DYNAMIC?

Arid

DOI	10.18172/cig.2923
	SOIL AND PERMAFROST IN THE ROSS SEA REGION OF ANTARCTICA: STABLE OR DYNAMIC?
	Balks, M. R.; O'Neill, T. A.
通讯作者	Balks, MR
来源期刊	CUADERNOS DE INVESTIGACION GEOGRAFICA
ISSN	0211-6820
EISSN	1697-9540
出版年	2016
卷号	42 期号:2 页码:415-434
英文摘要	Soils in the Ross Sea Region of Antarctica generally comprise a surface desert pavement and a seasonally thawed active layer over permafrost. Most soils are formed on regolith such as glacial till or colluvium. Mean annual air temperatures range from -18 degrees C to -24 degrees C with low precipitation. The active layer ranges in depth from minimal in higher altitude, colder sites, to near 1 m deep at warmer coastal sites in the northern part of the region. Underlying permafrost may be ice-cemented, or dry with no ice cement. In some areas ice-cored moraine occurs where there is a large body of ice within the subsoil permafrost. Two examples of active gully/fan - forming events, one at Cape Evans and one at Lake Vanda are described. At the Cape Evans event water from a small lake thawed and came into contact with the ice in the underlying patterned ground ice-wedge causing the ice-wedge to melt and extensive gully erosion to occur. A fan-building event near Lake Vanda in the Wright Valley resulted in erosive and depositional features covering a horizontal distance of about 3 km and an altitudinal range of about 1400 m. Such occasional events, can be attributed to warmer than average summers, and were first described in the Ross Sea Region in the 1970s. The Cape Evans and Lake Vanda events are examples of active, rapid, landscape processes and show that landscapes are not as static as is often assumed.
英文关键词	cryosol gelisol soil temperature geomorphic processes
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000384226300007
WOS关键词	MCMURDO DRY VALLEYS ; NORTHERN VICTORIA LAND ; BACTERIAL DIVERSITY ; ACTIVE-LAYER ; SOUND REGION ; LANDSCAPE ; COMMUNITIES ; ENVIRONMENT ; GRADIENT ; HISTORY
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/331622
作者单位	[Balks, M. R.; O'Neill, T. A.] Univ Waikato, Private Bag 3105, Hamilton 3240, New Zealand
推荐引用方式 GB/T 7714	Balks, M. R.,O'Neill, T. A.. SOIL AND PERMAFROST IN THE ROSS SEA REGION OF ANTARCTICA: STABLE OR DYNAMIC?[J],2016,42(2):415-434.
APA	Balks, M. R.,&O'Neill, T. A..(2016).SOIL AND PERMAFROST IN THE ROSS SEA REGION OF ANTARCTICA: STABLE OR DYNAMIC?.CUADERNOS DE INVESTIGACION GEOGRAFICA,42(2),415-434.
MLA	Balks, M. R.,et al."SOIL AND PERMAFROST IN THE ROSS SEA REGION OF ANTARCTICA: STABLE OR DYNAMIC?".CUADERNOS DE INVESTIGACION GEOGRAFICA 42.2(2016):415-434.