Freshwater Outburst from Lake Superior as a Trigger for the Cold Event 9300 Years Ago

被引：103

作者：

Yu, Shi-Yong ^{[1
,2
]}

Colman, Steven M. ^{[1
,3
]}

Lowell, Thomas V. ^{[4
]}

Milne, Glenn A. ^{[5
]}

Fisher, Timothy G. ^{[6
]}

Breckenridge, Andy ^{[7
]}

Boyd, Matthew ^{[8
]}

Teller, James T. ^{[9
]}

机构：

[1] Univ Minnesota, Large Lakes Observ, Duluth, MN 55812 USA

[2] Tulane Univ, Dept Earth & Environm Sci, New Orleans, LA 70118 USA

[3] Univ Minnesota, Dept Geol Sci, Duluth, MN 55812 USA

[4] Univ Cincinnati, Dept Geol, Cincinnati, OH 45221 USA

[5] Univ Ottawa, Dept Earth Sci, Ottawa, ON K1N 6N5, Canada

[6] Univ Toledo, Dept Environm Sci, Toledo, OH 43606 USA

[7] Mercyhurst Coll, Dept Geol, Erie, PA 16546 USA

[8] Lakehead Univ, Dept Anthropol, Thunder Bay, ON P7B 5E1, Canada

[9] Univ Manitoba, Dept Geol Sci, Winnipeg, MB R3T 2N2, Canada

来源：

SCIENCE | 2010年 / 328卷 / 5983期

基金：

加拿大自然科学与工程研究理事会;

关键词：

COMPUTING 3-DIMENSIONAL DEFORMATIONS; GLACIAL ISOSTATIC-ADJUSTMENT; LAURENTIDE ICE-SHEET; EARLY HOLOCENE; GREAT-LAKES; SPECTRAL FORMALISM; NORTH-ATLANTIC; SURFACE LOADS; RECORD; EARTH;

D O I：

10.1126/science.1187860

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Paleoclimate proxy records reveal a pervasive cooling event with a Northern Hemispheric extent similar to 9300 years ago. Coeval changes in the oceanic circulation of the North Atlantic imply freshwater forcing. However, the source, magnitude, and routing of meltwater have remained unknown. Located in central North America, Lake Superior is a key site for regulating the outflow of glacial meltwater to the oceans. Here, we show evidence for an similar to 45-meter rapid lake-level fall in this basin, centered on 9300 calibrated years before the present, due to the failure of a glacial drift dam on the southeast corner of the lake. We ascribe the widespread climate anomaly similar to 9300 years ago to this freshwater outburst delivered to the North Atlantic Ocean through the Lake Huron-North Bay-Ottawa River-St. Lawrence River valleys.

引用

页码：1262 / 1266

页数：5

共 39 条

[1]

Alley RB, 1997, GEOLOGY, V25, P483, DOI 10.1130/0091-7613(1997)025<0483:HCIAPW>2.3.CO

[2]

[3] Forcing of the cold event of 8,200 years ago by catastrophic drainage of Laurentide lakes [J].

Barber, DC ;

Dyke, A ;

Hillaire-Marcel, C ;

Jennings, AE ;

Andrews, JT ;

Kerwin, MW ;

Bilodeau, G ;

McNeely, R ;

Southon, J ;

Morehead, MD ;

Gagnon, JM .

NATURE, 1999, 400 (6742) :344-348

[4] High-resolution isotope records of early Holocene rapid climate change from two coeval stalagmites of Katerloch Cave, Austria [J].

Boch, Ronny ;

Spoetl, Christoph ;

Kramers, Jan .

QUATERNARY SCIENCE REVIEWS, 2009, 28 (23-24) :2527-2538

[5] Paleohydrology of the upper Laurentian Great Lakes from the late glacial to early Holocene [J].

Breckenridge, Andy ;

Johnson, Thomas C. .

QUATERNARY RESEARCH, 2009, 71 (03) :397-408

[6] A dry episode during the Younger Dryas and centennial-scale weak monsoon events during the early Holocene: A high-resolution stalagmite record from southeast of the Loess Plateau, China [J].

Cai, Binggui ;

Edwards, R. Lawrence ;

Cheng, Hai ;

Tan, Ming ;

Wang, Xu ;

Liu, Tungsheng .

GEOPHYSICAL RESEARCH LETTERS, 2008, 35 (02)

[7] Amplitude and timing of temperature and salinity variability in the subpolar North Atlantic over the past 10 k.y. [J].

Came, Rosemarie E. ;

Oppo, Delia W. ;

McManus, Jerry F. .

GEOLOGY, 2007, 35 (04) :315-318

[8] Rapid early Holocene deglaciation of the Laurentide ice sheet [J].

Carlson, Anders E. ;

Legrande, Allegra N. ;

Oppo, Delia W. ;

Came, Rosemarie E. ;

Schmidt, Gavin A. ;

Anslow, Faron S. ;

Licciardi, Joseph M. ;

Obbink, Elizabeth A. .

NATURE GEOSCIENCE, 2008, 1 (09) :620-624

[9] Freshwater forcing of abrupt climate change during the last glaciation [J].

Clark, PU ;

Marshall, SJ ;

Clarke, GKC ;

Hostetler, SW ;

Licciardi, JM ;

Teller, JT .

SCIENCE, 2001, 293 (5528) :283-287

[10]

COLMAN SM, 1994, GEOLOGY, V22, P547, DOI 10.1130/0091-7613(1994)022<0547:TEOMIF>2.3.CO

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