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Antarctic Polar Front

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Series: GSA Memoirs
Published: 01 January 1976
DOI: 10.1130/MEM145-p303
... compensation depth (CCD) for locations north of the Antarctic Polar Front depends mainly on varying dissolution. The CCD is about 4,800 m in the western basin of the Atlantic Ocean but is deeper than 5,200 m, at least locally, in the Indian Ocean. South of the Antarctic Polar Front the CCD is shallower than...
Journal Article
Journal: Geology
Published: 01 April 2009
Geology (2009) 37 (4): 375-378.
... of the Antarctic Polar Front modulated the strength of these cold events in regions to the north or south of it. In sum, the evidence indicates that outlet lobes from the Patagonian ice sheet readvanced into the lowlands of Torres del Paine following retreat from their LGM positions. Small ice-proximal lakes...
FIGURES
Series: GSA Memoirs
Published: 01 January 1976
DOI: 10.1130/MEM145-p337
... in the Antarctic and subantarctic. Using techniques including radiolarian-based paleoecological equations, Radiolaria per gram of sediment, and percentage of calicum carbonate, we show that 18,000 yr ago the Antarctic Polar Front was displaced north of its present position by as much as 7° of latitude...
Series: Geological Society, London, Special Publications
Published: 01 January 2013
DOI: 10.1144/SP381.17
EISBN: 9781862396401
... and MD07-3134 core sites referred to in this study; Subantarctic Front, Antarctic Polar Front, Southern Antarctic Circumpolar Current Front, limits modified from Gersonde et al. (2005) . Additionally, the positions of Winter and Summer Sea Ice limits today ( Gersonde et al. 2005 ; Allen et al. 2011...
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Journal Article
Journal: Geology
Published: 01 May 2009
Geology (2009) 37 (5): 411-414.
...) Marine, Coastal and Polar Systems (MARCOPOLI) programs MAR2 and POL6, and the British Antarctic Survey Glacial Retreat in Antarctica and Deglaciation of the Earth System program. We thank the captains, officers, crew, technical support staff, and other scientists who participated in the two research...
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Journal Article
Journal: Geology
Published: 01 January 2013
Geology (2013) 41 (1): 35-38.
...Claus-Dieter Hillenbrand; Gerhard Kuhn; James A. Smith; Karsten Gohl; Alastair G.C. Graham; Robert D. Larter; Johann P. Klages; Rachel Downey; Steven G. Moreton; Matthias Forwick; David G. Vaughan Abstract Ice loss from the marine-based, potentially unstable West Antarctic Ice Sheet (WAIS...
FIGURES
Journal Article
Journal: Geology
Published: 01 May 2017
Geology (2017) 45 (5): 403-406.
... the Holocene. An implication of this hypothesis is that geological evidence from the southwestern Ross Sea has been used widely to interpret retreat histories of the West Antarctic Ice Sheet (WAIS) across the wider Ross Sea embayment. Accurately constraining the timing and pattern of marine-based ice sheet...
FIGURES
Series: Geological Society, London, Special Publications
Published: 01 January 2013
DOI: 10.1144/SP381.1
EISBN: 9781862396401
... continental interiors) and are common today, in both the Arctic (e.g. Svalbard, Canadian High Arctic) and the Antarctic (e.g. Vestfold Hills, Dry Valleys; Alexander Island). However, geomorphological processes are poorly understood within polar deserts despite their widespread occurrence. In particular...
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Series: Geological Society, London, Memoirs
Published: 01 January 2002
DOI: 10.1144/GSL.MEM.2002.022.01.22
EISBN: 9781862393974
... levee. Dating of the sediments reveals that the levees in their present form started to develop with a late Miocene cooling event, which caused an expansion of the East Antarctic Ice Sheet and an invigoration of thermohaline current activity. The Weddell Sea is a large...
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Journal Article
Journal: Geology
Published: 01 April 2004
Geology (2004) 32 (4): 317-320.
... Polar Front from Orsi et al. (1995) and L.H. Burckle (2001, personal commun.). The Antarctic Polar Front (APF, Fig. 1 ) is an important climate boundary in terms of air-sea fluxes and the heat and salt budgets of the oceans. At the surface, the APF is a steep sea-surface temperature gradient...
FIGURES
Journal Article
Published: 01 January 2010
Geological Magazine (2010) 147 (1): 158-159.
... being blown up in Salonika in 1916, he survived but did not return to the front lines. From here on it was less luck and more personal determination that drove him. There were still Antarctic reports to be completed and he found a ‘home’ alongside hoards of unsorted rocks and fossils in the attic rooms...
Journal Article
Journal: Geology
Published: 02 October 2017
Geology (2017) 45 (11): 1035-1038.
...) drain ∼20% of Antarctica’s ice volume into the Weddell Sea Embayment (WSE; Fig. 1A inset), where ∼40% of Antarctic Bottom Water (AABW), a major component of the global ocean conveyor, is formed by ice-ocean interactions below and in front of the Filchner-Ronne Ice Shelf ( Meredith, 2013 ). Despite its...
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Image
Figure 1. Location of Subantarctic <b>Front</b> and <b>Polar</b> <b>Front</b> ( Gille, 1994 ) su...
in > Geology
Published: 01 August 2007
Figure 1. Location of Subantarctic Front and Polar Front ( Gille, 1994 ) superimposed on map where sediment structures at seafloor indicate medium to strong currents ( Goodell et al., 1971 ). Dark shading—inferred strong currents; light shading—medium flow. Front boundaries mark where strongest
Journal Article
Journal: GSA Bulletin
Published: 01 January 2015
GSA Bulletin (2015) 127 (1-2): 297-315.
... and total diatom abundance and highly negative δ 13 C org indicate lower primary productivity caused by light limitation and other biologic activity. South of the polar front and across both the western and eastern AP, the Barilari Bay record confirms a tightly constrained period of glacial advance...
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Series: Geological Society, London, Memoirs
Published: 01 January 2014
DOI: 10.1144/M40.16
EISBN: 9781862397002
... latitudes. The contribution of frost weathering to cliff and shore platform development in polar and subpolar rock coasts is unclear, but is likely to be an important influence. Rock coasts are widespread in the Arctic and sub-Arctic, including Iceland, and in the Antarctic and sub-Antarctic the limited ice...
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Journal Article
Journal: GSA Bulletin
Published: 01 July 2010
GSA Bulletin (2010) 122 (7-8): 1298-1307.
..., Chrysophyta and Phaeophyta : Ocean and Polar Research , v. 23 , p. 209 – 221 . KOPRI (Korean Polar Research Institute) , 2009 , Annual weather report (King Sejong, Korean Antarctic station, 2007) : Korea Polar Research Institute Open-File Report BSPE08030 , p. 17 – 92 . Levitt G.J. Bolton...
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Journal Article
Journal: GSA Bulletin
Published: 01 May 2011
GSA Bulletin (2011) 123 (5-6): 997-1015.
... H. Schmiedl G. , 1993 , Benthic foraminiferal assemblages from the eastern South Atlantic Polar Front region between 35° and 57°S: Distribution, ecology and fossilization potential : Marine Micropaleontology , v. 22 , p. 33 – 69 , doi: 10.1016/0377-8398(93)90003-G . Majewski W...
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Journal Article
Journal: Geology
Published: 01 March 2008
Geology (2008) 36 (3): 223-226.
...Joanne S. Johnson; Michael J. Bentley; Karsten Gohl Abstract Dramatic changes (acceleration, thinning, and grounding-line retreat of major ice streams) in the Amundsen Sea sector of the West Antarctic Ice Sheet (WAIS) have been observed during the past two decades, but the millennial-scale context...
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Journal Article
Journal: Geology
Published: 01 September 2004
Geology (2004) 32 (9): 797-800.
... and Antarctic glaciation by removing the final barrier to deep circumpolar ocean circulation ( Barker, 2001 ). The consequent development of the Polar Front and onset of the Antarctic Circumpolar Current led to the thermal isolation of Antarctica ( Kennett et al., 1975 ; Kennett, 1977 ). Marine seismic...
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Journal Article
Journal: GSA Bulletin
Published: 01 May 2006
GSA Bulletin (2006) 118 (5-6): 606-619.
... Programme. Anderson's research was funded by the U.S. National Science Foundation, Office of Polar Programs (grant 9527876). In this paper, we report on the nature of the continental slope and shelf break in the isolated Amundsen Sea sector of the Antarctic margin, south of the Pacific Ocean (Fig. 1...
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