Prince Gustav Channel

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Topic: Prince Gustav Channel

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	New Release Article
		Until recently the ice shelf in Prince Gustav Channel provided a frequent route for sledging parties, from James Ross Island to the Antarctic Peninsula.
		This image shows the disintegration of the ice shelf in Prince Gustav Channel.
		It is composed of freshwater ice that originally fell as snow, either in situ or inland and brought to the ice shelf by glaciers.
	www.iitap.iastate.edu /gcp/news/ross.html

	Special Report: Antarctic Warming - Early Signs Of Global Climate Change
		Of greater significance is the disintegration of the Larsen ice shelf in the north and the opening of Prince Gustav's channel.
		January 9, 1995 satellite photo of the northern portion of the Antarctic peninsula, showing the northern part of the Larsen ice shelf, Prince Gustav's Channel and James Ross Island.
		The ice shelf is reduced to a plume of rubble extending out into the Weddell Sea.
	archive.greenpeace.org /climate/polar/antarc_report (157 words)

	ONE SMALL ICE SHELF DIES, ONE GIANT ICEBERG BORN
		Prince Gustav Channel was discovered in 1903 by the Swedish Antarctic Expedition under Nordenskj”ld, who named it for Crown Prince Gustav of Norway.
		An ice shelf is the floating extension of the grounded ice sheet.
		The new iceberg calved from the Larsen Ice Shelf and measures 78 km x 37 km, (roughly the size of Oxfordshire), and is around 200 m thick.
	www.meteor.iastate.edu /gcp/sealevel/ross.html (976 words)

	Antarctic Voyages and Expeditions
		The men established a hut on Snow Hill Island, explored the east side of the Antarctic Peninsula, made a first landing on its coast, and showed that Herbert Sound between James Ross Island and Vega Island were connected to Prince Gustav Channel.
		Charcot discovered Pendleton Bay and Matha Bay, charted most of Adelaide Island, discovered most of the lands south and east of Adelaide Island, ascended a peak on Jenny Island, made the closest observations to date of Alexander Island, and was the first to sight Peter I Island after Bellingshausen.
		They made first landings on Coulman Island and Ross Island, and were the first to step upon and travel over the Ross Ice Shelf, establishing a new farthest south of 78° 50'.
	www.antarctic-circle.org /rosove.htm (976 words)

	Antarctic, Patagonia, Cape Horn, Tierra Del Fuego, South Georgia, Arctic Expeditions, VICTORY ADVENTURE TRAVEL
		Cormorant Island 64°48'S, 063°58'W South side of Anvers I. Crystal Hill 63°39'S, 057°44'W Prince Gustav Channel
		It is scheduled to rendezvous with the 'Professor Multanovskiy' at Deception Island on 7 January to transfer passengers and take on stores and other supplies, before travelling down the Peninsula and heading westwards towards the Ross Sea (see ANAN-75/04 following).
		Island off the eastern side of the Antarctic Peninsula.
	www.victory-cruises.com /antarctic.fotos.html (976 words)

	Climate Change 2001: Impacts, Adaptation and Vulnerability
		On the east coast, the ice shelves that occupied Prince Gustav Channel and Larsen Inlet and Larsen Ice Shelf A have retreated (Rott et al., 1996; Vaughan and Doake, 1996; Skvarca et al., 1998).
		On the West Coast, the Wordie Ice Shelf, Müller Ice Shelf, George VI Ice Shelf, and Wilkins Ice Shelf have retreated (Ward, 1995; Vaughan and Doake, 1996; Luchitta and Rosanova, 1998).
		The ice shelves were floating, so their melting does not directly add to sea level, and they usually are replaced by sea-ice cover, so overall albedo changes very little.
	www.pnl.gov /aisu/pubs/eemw/papers/ipccreports/workinggroup2/601.htm (976 words)

	Antarctic Voyages and Expeditions
		The men established a hut on Snow Hill Island, explored the east side of the Antarctic Peninsula, made a first landing on its coast, and showed that Herbert Sound between James Ross Island and Vega Island were connected to Prince Gustav Channel.
		Charcot discovered Pendleton Bay and Matha Bay, charted most of Adelaide Island, discovered most of the lands south and east of Adelaide Island, ascended a peak on Jenny Island, made the closest observations to date of Alexander Island, and was the first to sight Peter I Island after Bellingshausen.
		In a year of exceptionally ice-free conditions, the sea south of the main pack was wide open: the men in their tiny ships made rapid progress and, without sighting land, established a new farthest south record of 74 ° 15' S, shattering Cook's record by 185 nautical miles.
	www.antarctic-circle.org /rosove.htm (4233 words)

	Journal of the Geological Society: Sedimentation associated with Antarctic Peninsula ice shelves: Implications for palaeoenvironmental reconstructions of glacimarine sediments
		However, whether the onset of deposition of the diatom-bearing mud is synchronous across the region is uncertain in the absence of reliable radiocarbon ages SW of Prince Gustav Channel.
		By contrast, proximal ice-shelf sediment facies of Antarctica are dominated by coarse-grained lithofacies (diamicton, gravel-rich and sand-rich facies), and subaqueous outwash is rare, reflecting the colder polar environment and lack of subglacial meltwater.
		Diamicton, gravelly sand, gravelly mud, muddy gravel, dropstone sandy mud and dropstone mud (all massive to weakly laminated with gradational contacts) deposited through rain out of debris from the base of the ice shelf, dominate sedimentation on the shelf and in the Larsen-A trough (Figs 2 & 3).
	www.findarticles.com /p/articles/mi_qa3721/is_200205/ai_n9084166/pg_2 (4233 words)

	Climate Change 2001: Impacts, Adaptation and Vulnerability
		On the east coast, the ice shelves that occupied Prince Gustav Channel and Larsen Inlet and Larsen Ice Shelf A have retreated (Rott et al., 1996; Vaughan and Doake, 1996; Skvarca et al., 1998).
		Following Mercer (1978), Vaughan and Doake (1996) show that the pattern of retreat could be explained by a southerly movement of the 0°C January isotherm, which appears to define a limit of viability for ice shelves.
		Because warming on the Antarctic Peninsula exceeds that over much of the rest of the continent (Jacka and Budd, 1998), migration of the limit of viability for ice shelves probably will not affect the Ronne-Filchner or Ross ice shelves in the next 100 years (Vaughan and Doake, 1996).
	www.grida.no /climate/ipcc_tar/wg2/601.htm (4233 words)

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In the News (Fri 1 Jan 10)