Aeolian dust in East Antarctica (EPICA-Dome C and Vostok):: Provenance during glacial ages over the last 800 kyr

被引：101

作者：

Delmonte, B. ^{[1
]}

Andersson, P. S. ^{[2
]}

Hansson, M. ^{[4
]}

Schoberg, H. ^{[2
]}

Petit, J. R. ^{[5
]}

Basile-Doelsch, I. ^{[3
]}

Maggi, V.

机构：

[1] DISAT Univ Milano Bicocca, I-20126 Milan, Italy

[2] Swedish Museum Nat Hist, Lab Isotope Geol, SE-10405 Stockholm, Sweden

[3] Univ Paul Cezanne, CEREGE, F-13545 Aix En Provence 4, France

[4] Stockholm Univ, Dept Phys Geog & Quatemary Geol, SE-10691 Stockholm, Sweden

[5] Univ Grenoble 1, LGGE, CNRS, UMR 51230, F-38402 St Martin Dheres, France

来源：

GEOPHYSICAL RESEARCH LETTERS | 2008年 / 35卷 / 07期

关键词：

D O I：

10.1029/2008GL033382

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Aeolian mineral dust archived in Antarctic ice cores represents a key proxy for Quaternary climate evolution. The longest and most detailed dust and climate sequences from polar ice are provided today by the Vostok and by the EPICA-Dome C (EDC) ice cores. Here we investigate the geographic provenance of dust windborne to East Antarctica during Early and Middle Pleistocene glacial ages using strontium and neodymium isotopes as tracers. The isotopic signature of Antarctic dust points towards a dominant South American origin during Marine Isotopic Stage (MIS) 8, 10, 12, and back to MIS 16 and 20 as deduced from EDC core. Data provide evidence for a persistent overall westerly circulation pattern allowing efficient transfer of dust from South America to the interior of Antarctica over the last 800 kyr. Some small but significant dissimilarity between old and recent glacial ages suggests a slightly reduced Patagonian contribution during ancient glaciations.

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页数：6

相关论文

共 26 条

[1] Eight glacial cycles from an Antarctic ice core [J].

Augustin, L ;

Barbante, C ;

Barnes, PRF ;

Barnola, JM ;

Bigler, M ;

Castellano, E ;

Cattani, O ;

Chappellaz, J ;

DahlJensen, D ;

Delmonte, B ;

Dreyfus, G ;

Durand, G ;

Falourd, S ;

Fischer, H ;

Flückiger, J ;

Hansson, ME ;

Huybrechts, P ;

Jugie, R ;

Johnsen, SJ ;

Jouzel, J ;

Kaufmann, P ;

Kipfstuhl, J ;

Lambert, F ;

Lipenkov, VY ;

Littot, GVC ;

Longinelli, A ;

Lorrain, R ;

Maggi, V ;

Masson-Delmotte, V ;

Miller, H ;

Mulvaney, R ;

Oerlemans, J ;

Oerter, H ;

Orombelli, G ;

Parrenin, F ;

Peel, DA ;

Petit, JR ;

Raynaud, D ;

Ritz, C ;

Ruth, U ;

Schwander, J ;

Siegenthaler, U ;

Souchez, R ;

Stauffer, B ;

Steffensen, JP ;

Stenni, B ;

Stocker, TF ;

Tabacco, IE ;

Udisti, R ;

van de Wal, RSW .

NATURE, 2004, 429 (6992) :623-628

[2] Patagonian origin of glacial dust deposited in East Antarctica (Vostok and Dome C) during glacial stages 2, 4 and 6 [J].

Basile, I ;

Grousset, FE ;

Revel, M ;

Petit, JR ;

Biscaye, PE ;

Barkov, NI .

EARTH AND PLANETARY SCIENCE LETTERS, 1997, 146 (3-4) :573-589

[3] Aerosol deposited in East Antarctica over the last glacial cycle:: Detailed apportionment of continental and sea-salt contributions [J].

Bigler, M ;

Röthlisberger, R ;

Lambert, F ;

Stocker, TF ;

Wagenbach, D .

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2006, 111 (D8)

[4] Comparing the Epica and Vostok dust records during the last 220,000 years: stratigraphical correlation and provenance in glacial periods [J].

Delmonte, B ;

Basile-Doelsch, I ;

Petit, JR ;

Maggi, V ;

Revel-Rolland, M ;

Michard, A ;

Jagoutz, E ;

Grousset, F .

EARTH-SCIENCE REVIEWS, 2004, 66 (1-2) :63-87

[5] Dust size evidence for opposite regional atmospheric circulation changes over east Antarctica during the last climatic transition [J].

Delmonte, B ;

Petit, JR ;

Andersen, KK ;

Basile-Doelseh, I ;

Maggi, V ;

Lipenkov, VY .

CLIMATE DYNAMICS, 2004, 23 (3-4) :427-438

[6] Dust provenance in Antarctic ice during glacial periods: From where in southern South America? [J].

Gaiero, Diego M. .

GEOPHYSICAL RESEARCH LETTERS, 2007, 34 (17)

[7] A uniform isotopic and chemical signature of dust exported from Patagonia: Rock sources and occurrence in southern environments [J].

Gaiero, Diego M. ;

Brunet, Frederic ;

Probst, Jean-Luc ;

Depetris, Pedro J. .

CHEMICAL GEOLOGY, 2007, 238 (1-2) :107-120

[8] Loess geochemistry and its implications for particle origin and composition of the upper continental crust [J].

Gallet, S ;

Jahn, BM ;

Lanoe, BV ;

Dia, A ;

Rossello, E .

EARTH AND PLANETARY SCIENCE LETTERS, 1998, 156 (3-4) :157-172

[9] MINERALOGY OF INSOLUBLE PARTICLES IN THE VOSTOK ANTARCTIC ICE CORE OVER THE LAST CLIMATIC CYCLE (150-KYR) [J].

GAUDICHET, A ;

DEANGELIS, M ;

LEFEVRE, R ;

PETIT, JR ;

KOROTKEVITCH, YS ;

PETROV, VN .

GEOPHYSICAL RESEARCH LETTERS, 1988, 15 (13) :1471-1474

[10] Tracing dust sources and transport patterns using Sr, Nd and Pb isotopes [J].

Grousset, FE ;

Biscaye, PE .

CHEMICAL GEOLOGY, 2005, 222 (3-4) :149-167