DOI: 10.5194/cp-8-741-2012
Scopus记录号: 2-s2.0-84859725516
论文题名: Interpreting last glacial to Holocene dust changes at Talos Dome (East Antarctica): Implications for atmospheric variations from regional to hemispheric scales
作者: Albani S. ; Delmonte B. ; Maggi V. ; Baroni C. ; Petit J.-R. ; Stenni B. ; Mazzola C. ; Frezzotti M.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2012
卷: 8, 期: 2 起始页码: 741
结束页码: 750
语种: 英语
Scopus关键词: atmospheric transport
; deglaciation
; dust
; glacial-interglacial cycle
; grain size
; Holocene
; ice core
; ice free corridor
; ice sheet
; Last Glacial
; Last Glacial Maximum
; size distribution
; Southern Hemisphere
; Antarctica
; Dome Concordia
; East Antarctica
; Ross Sea
; Southern Ocean
; Talos Dome
英文摘要: Central East Antarctic ice cores preserve stratigraphic records of mineral dust originating from remote sources in the Southern Hemisphere, and represent useful indicators of climatic variations on glacial-interglacial time scales. The peripheries of the East Antarctic Ice Sheet, where ice-free areas with the potential to emit dust exist, have been less explored from this point of view. Here, we present a new profile of dust deposition flux and grain size distributions from an ice core drilled at Talos Dome (TALDICE, Northern Victoria Land, East Antarctica), where there is a significant input of dust from proximal Antarctic ice-free areas. We analyze dust and stable water isotopes variations from the Last Glacial Maximum to the Late Holocene, and compare them to the EPICA Dome C profiles from central East Antarctica. The smaller glacial-interglacial variations at Talos Dome compared to Dome C and a distinctive decreasing trend during the Holocene characterize the TALDICE dust profile. By deciphering the composite dust signal from both remote and local sources, we show the potential of this combined proxy of source activity and atmospheric transport to give information on both regional and larger spatial scales. In particular, we show how a regional signal, which we relate to the deglaciation history of the Ross Sea embayment, can be superimposed to the broader scale glacial-interglacial variability that characterizes other Antarctic sites. © 2012 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49590
Appears in Collections: 气候变化与战略
There are no files associated with this item.
Recommended Citation:
Albani S.,Delmonte B.,Maggi V.,et al. Interpreting last glacial to Holocene dust changes at Talos Dome (East Antarctica): Implications for atmospheric variations from regional to hemispheric scales[J]. Climate of the Past,2012-01-01,8(2)