globalchange  > 气候变化与战略
DOI: 10.5194/cp-9-597-2013
Scopus记录号: 2-s2.0-84877964791
论文题名:
Iron fluxes to Talos Dome, Antarctica, over the past 200 kyr
作者: Vallelonga P.; Barbante C.; Cozzi G.; Gabrieli J.; Schüpbach S.; Spolaor A.; Turetta C.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2013
卷: 9, 期:2
起始页码: 597
结束页码: 604
语种: 英语
Scopus关键词: atmospheric transport ; deglaciation ; dome ; dust ; Holocene ; ice core ; ice shelf ; interglacial ; iron ; Last Glacial Maximum ; rare earth element ; sea ice ; Antarctica ; East Antarctica ; Ross Sea ; Southern Ocean ; Talos Dome
英文摘要: Atmospheric fluxes of iron (Fe) over the past 200 kyr are reported for the coastal Antarctic Talos Dome ice core, based on acid leachable Fe concentrations. Fluxes of Fe to Talos Dome were consistently greater than those at Dome C, with the greatest difference observed during interglacial climates. We observe different Fe flux trends at Dome C and Talos Dome during the deglaciation and early Holocene, attributed to a combination of deglacial activation of dust sources local to Talos Dome and the reorganization of atmospheric transport pathways with the retreat of the Ross Sea ice shelf. This supports similar findings based on dust particle sizes and fluxes and Rare Earth Element fluxes. We show that Ca and Fe should not be used as quantitative proxies for mineral dust, as they all demonstrate different deglacial trends at Talos Dome and Dome C. Considering that a 20 ppmv decrease in atmospheric CO2 at the coldest part of the last glacial maximum occurs contemporaneously with the period of greatest Fe and dust flux to Antarctica, we confirm that the maximum contribution of aeolian dust deposition to Southern Ocean sequestration of atmospheric CO2 is approximately 20 ppmv. © Author(s) 2013.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49429
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Recommended Citation:
Vallelonga P.,Barbante C.,Cozzi G.,et al. Iron fluxes to Talos Dome, Antarctica, over the past 200 kyr[J]. Climate of the Past,2013-01-01,9(2)
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