干旱区生态环境知识资源中心(Arid): Relationship between meteoric Be-10 and NO3- concentrations in soils along Shackleton Glacier, Antarctica

Arid

DOI	10.5194/esurf-9-1363-2021
	Relationship between meteoric Be-10 and NO3- concentrations in soils along Shackleton Glacier, Antarctica
	Diaz, Melisa A.; Corbett, Lee B.; Bierman, Paul R.; Adams, Byron J.; Wall, Diana H.; Hogg, Ian D.; Fierer, Noah; Lyons, W. Berry
通讯作者	Diaz, MA (corresponding author), Ohio State Univ, Sch Earth Sci, Columbus, OH 43210 USA. ; Diaz, MA (corresponding author), Ohio State Univ, Byrd Polar & Climate Res Ctr, Columbus, OH 43210 USA.
来源期刊	EARTH SURFACE DYNAMICS
ISSN	2196-6311
EISSN	2196-632X
出版年	2021
卷号	9 期号:5 页码:1363-1380
英文摘要	Outlet glaciers that flow through the Transantarctic Mountains (TAM) experienced changes in ice thickness greater than other coastal regions of Antarctica during glacial maxima. As a result, ice-free areas that are currently exposed may have been covered by ice at various points during the Cenozoic, complicating our understanding of ecological succession in TAM soils. Our knowledge of glacial extent on small spatial scales is limited for the TAM, and studies of soil exposure duration and disturbance, in particular, are rare. We collected surface soil samples and, in some places, depth profiles every 5 cm to refusal (up to 30 cm) from 11 ice-free areas along Shackleton Glacier, a major outlet glacier of the East Antarctic Ice Sheet. We explored the relationship between meteoric Be-10 and NO3- in these soils as a tool for understanding landscape disturbance and wetting history and as exposure proxies. Concentrations of meteoric Be-10 spanned more than an order of magnitude across the region (2:9 x 10(8) to 73 x 10(8) atoms g(-1)) and are among the highest measured in polar regions. The concentrations of NO3- were similarly variable and ranged from similar to 1 mu g g(-1) to 15 mg g(-1). In examining differences and similarities in the concentrations of Be-10 and NO3- with depth, we suggest that much of the southern portion of the Shackleton Glacier region has likely developed under a hyper-arid climate regime with minimal disturbance. Finally, we inferred exposure time using Be-10 concentrations. This analysis indicates that the soils we analyzed likely range from recent exposure (following the Last Glacial Maximum) to possibly > 6 Myr. We suggest that further testing and interrogation of meteoric Be-10 and NO3- concentrations and relationships in soils can provide important information regarding landscape development, soil evolution processes, and inferred exposure durations of surfaces in the TAM.
类型	Article
语种	英语
开放获取类型	gold, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000709209100001
WOS关键词	CENTRAL TRANSANTARCTIC MOUNTAINS ; MCMURDO DRY VALLEYS ; ICE-SHEET ; SIRIUS GROUP ; VICTORIA LAND ; REGION ; RANGE ; GEOCHEMISTRY ; ACCUMULATION ; SEDIMENTS
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
来源机构	Colorado State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368020
作者单位	[Diaz, Melisa A.; Lyons, W. Berry] Ohio State Univ, Sch Earth Sci, Columbus, OH 43210 USA; [Diaz, Melisa A.; Lyons, W. Berry] Ohio State Univ, Byrd Polar & Climate Res Ctr, Columbus, OH 43210 USA; [Corbett, Lee B.; Bierman, Paul R.] Univ Vermont, Rubenstein Sch Environm & Nat Resources, Burlington, VT 05405 USA; [Adams, Byron J.] Brigham Young Univ, Monte L Bean Museum, Dept Biol, Evolutionary Ecol Lab, Provo, UT 84602 USA; [Wall, Diana H.] Colorado State Univ, Sch Global Environm Sustainabil, Dept Biol, Ft Collins, CO 80523 USA; [Hogg, Ian D.] Polar Knowledge Canada, Canadian High Arct Res Stn, Cambridge, NU, Canada; [Hogg, Ian D.] Univ Waikato, Sch Sci, Hamilton 3216, New Zealand; [Fierer, Noah] Univ Colorado, Cooperat Inst Res Environm Sci, Dept Ecol & Evolutionary Biol, Boulder, CO 80309 USA
推荐引用方式 GB/T 7714	Diaz, Melisa A.,Corbett, Lee B.,Bierman, Paul R.,et al. Relationship between meteoric Be-10 and NO3- concentrations in soils along Shackleton Glacier, Antarctica[J]. Colorado State University,2021,9(5):1363-1380.
APA	Diaz, Melisa A..,Corbett, Lee B..,Bierman, Paul R..,Adams, Byron J..,Wall, Diana H..,...&Lyons, W. Berry.(2021).Relationship between meteoric Be-10 and NO3- concentrations in soils along Shackleton Glacier, Antarctica.EARTH SURFACE DYNAMICS,9(5),1363-1380.
MLA	Diaz, Melisa A.,et al."Relationship between meteoric Be-10 and NO3- concentrations in soils along Shackleton Glacier, Antarctica".EARTH SURFACE DYNAMICS 9.5(2021):1363-1380.