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Topic: Lake Vida

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	Encyclopedia: Lake Chad
		Lake Chad (in French: Lac Tchad) is a large, shallow lake in Africa.
		The lake is believed to be a remnant of a former inland sea which is estimated to have covered an area of 300,000 kmÂ² 6,000 years ago.
		This is due to reduced rainfall combined with greatly increased amounts of irrigation water being drawn from the lake and the rivers which feed it, the largest being the Chari/Logon system, which originates in the mountains of the Central African Republic.
	www.nationmaster.com /encyclopedia/Lake-Chad (877 words)

	ICDS -- Projects
		The existence of the numerous closed-basin lakes in the region results from a few weeks during the summer when the melting point on nearby glaciers is exceeded and ephemeral streams flow into the lakes.
		The liquid water columns of these lakes are substantial (up to 70 m deep) and range from fresh to highly saline.
		Lake Vida in Victoria Valley (77°23-S, 161°56-E) is one of the largest (7 sq.
	www.ssec.wisc.edu /icds/projects/vida.html (316 words)

	Lake Vida - Wikipedia, the free encyclopedia
		Lake Vida is an ice-covered super-concentrated saltwater endorheic lake located in Victoria Valley, one of the McMurdo Dry Valleys in Antarctica.
		The lake, one of the largest in the dry valleys, remains liquid because it is seven times saltier than sea water.
		Researchers discovered the lake, along with 2,800-year-old microorganisms, under nineteen metres of ice.
	en.wikipedia.org /wiki/Lake_Vida (91 words)

	Researchers uncover extreme lake — and 3000-year-old microbes —in Mars-like antarctic environment
		Because of the arid, chilled environment in which it resides, scientists believe the lake may be an important template for the search for evidence of ancient microbial life on Mars and other icy worlds.
		Researchers previously thought Vida was one of several Antarctic lakes that are frozen to their beds year-round.
		Lake Vida, more than 5 km long, is one of the largest in the cold Antarctic desert region known as the McMurdo Dry Valleys.
	www.eurekalert.org /pub_releases/2002-12/nsf-rue121302.php (753 words)

	Lake Vida
		A 5-km-long ice-sealed super-concentrated saltwater lake found under 19 m of ice in the region of Antarctica known as McMurdo Dry Valleys.
		Discovery of the all-year-round liquid nature of the lake was announced in December 2002 together with that of 2,800-year-old microbes, which had been revitalized after extraction from ice core samples above the lake.
		If so, given that the organisms in the Vida samples managed to survive the low temperatures, lack of light, and hypersalinity (see halophiles) for millennia and to begin photosynthesising again when unfrozen, it is possible that the same revitalization could occur with microbes on Mars.
	www.daviddarling.info /encyclopedia/L/LakeVida.html (303 words)

	National Science Foundation
		Borehole #6 at Lake Vida would be sealed by welding the present temporary cap to the iron borehole casing at the ground surface.
		At Lake Vida, the existence of diesel fuel-contaminated soil and the suspected existence of contaminated lake water and ice could have a detrimental impact upon ongoing or planned scientific research and ancillary education opportunities.
		At Lake Vida, the persistence of petroleum hydrocarbons in the soil and ice, and possibly lake water, as well as the aesthetics of stained soil and ice are a concern.
	huey.colorado.edu /LTER/assessments/eis120597.html (3806 words)

	Geological Society - News - La vida non breve
		Until recently, scientists believed Lake Vida in Antarctica was a solid block of ice, frozen from top to bottom.
		NASA is interested in the research because the Lake Vida ecosystem provides useful lessons for launching Martian ice probes that may one day yield frozen microbes.
		Lake Vida gives us an excellent model of how long a lake ecosystem can survive before you snuff it out by turning down the temperature.
	www.geolsoc.org.uk /template.cfm?name=LaVidaBreve (1079 words)

	sciforums.com - The Lost World of Lake Vida
		A lake hidden beneath 19 meters of ice and gravel has been found near the bottom of the world that might contain an ecosystem completely separate from our own.
		Lake Vida, buried under Antarctic ice for over 2,500 years, is liquid only because of its high salt content.
		If living organisms are found in Lake Vida, they may give an indication that life might even still exist under similar frozen ice-sheets, such as under the larger Lake Vostok, parts of Mars, and even moons of Jupiter such as Europa.
	www.sciforums.com /showthread.php?t=16707 (440 words)

	LakeNet - News (Site not responding. Last check: 2007-09-17)
		Washington, D.C. Antarctica's Lake Vida may represent a previously unknown ecosystem, an ice sealed lake that contains the thickest non-glacial lake ice cover on Earth and water seven times saltier than seawater, U.S. researchers say.
		Researchers once thought Vida was one of several Antarctic lakes that are frozen to their beds year round.
		Lake Vida, more than five kilometers (three miles) long, is one of the largest in the cold Antarctic desert region known as the McMurdo Dry Valleys.
	www.worldlakes.org /shownews.asp?newsid=676 (587 words)

	Newswise
		Microbes discovered packed in an ice-sealed, briny lake in Antarctica may help advance techniques to search for signs of life locked in the subterranean ice on Mars, and provide a model for what lakes on Earth may have looked like during severe glacial periods.
		The research overturns earlier assumptions that Lake Vida was frozen solid.
		NASA is interested in the research because the Lake Vida ecosystem serves as a classroom of sorts, providing lessons for launching Martian ice probes that may yield frozen microbes.
	www.newswise.com /articles/view?id=ANTARCT.UIC (857 words)

	Home page of Annika Mosier, DRI/DEES
		Lake Vida, located in the McMurdo Dry Valleys, Antarctica, is an "ice-sealed" lake with ~19 meters of ice covering a highly saline liquid water column.
		The inferred saline lake beneath the ice remains liquid at a temperature of -10ºC presumably because of the high concentration of salts (245 ppt, 7 times greater than the salinity of seawater).
		The lake is unlike any other permanently ice covered lakes in the McMurdo Dry Valleys—no other lakes, such as this, are known to exist on earth.
	www.dri.edu /People/cfritsen/grads/Mosier.html (410 words)

	Printable Version (Site not responding. Last check: 2007-09-17)
		Priscu calls these deeply frozen lakes "ice museums" because they harbor ancient DNA that is well preserved by the cold, salty and arid conditions.
		Lake Vida, more than three miles long, is one of the largest in the cold Antarctic desert region known as the McMurdo Dry Valleys in the Transantarctic Mountains.
		The Lake Vida studies were funded by the National Science Foundation.
	www.bozemandailychronicle.com /articles/2002/12/23/news/02antarctic.prt (544 words)

	Science News: Microbes turn up deep in Antarctic lake ice - Life at the Frigid Edge - Lake Vida, Antarctica
		In contrast, meltwater and sediments carrying microorganisms don't enter Lake Vida but instead freeze on top of it in a bubble-pocked layer thick enough to block sunlight from reaching the bottom.
		Lake Vida is unique, agrees Diane M. McKnight of the University of Colorado in Boulder.
		Priscu says that finding viable life in seemingly inhospitable places, such as deep in Lake Vida's ice, supports his view that Earth's biosphere is much larger than previously imagined.
	www.findarticles.com /p/articles/mi_m1200/is_2002_Dec_21/ai_96417263 (601 words)

	APOD: 2003 January 28 - The Lost World of Lake Vida (Site not responding. Last check: 2007-09-17)
		Previously, scientists drilled to within a few meters of the lake and indeed found frozen microbes.
		Their existence bolsters speculation that similar microorganisms could be found in frozen brine beneath the surface of Mars.
		Lake Vostok, parts of Mars, and even moons of Jupiter such as Europa.
	antwrp.gsfc.nasa.gov /apod/ap030128.html (187 words)

	News in Science - Ancient life discovered under Antarctic ice - 17/12/2002
		The unusual and extreme aquatic ecosystem was discovered in Lake Vida, a 5 km long lake in the cold Antarctic desert region known as the McMurdo Dry Valleys.
		Antarctica's Lake Vida appears to represent a previously unknown ecosystem - a frigid, 'ice-sealed' lake.
		The unusual lake is a product of the region's unique environmental conditions: summers warm enough to briefly flood the valley floors with glacial meltwater, combined with winters cold enough to create a permanent ice cap.
	www.abc.net.au /science/news/stories/s748339.htm (564 words)

	Millenium Life on Ice :: Astrobiology Magazine :: Search for Life in the Universe
		Summary (Dec 22, 2002): Peter Doran of the University of Illinois at Chicago and colleagues have uncovered an extreme lake -- and ancient microbes ---by drilling into Lake Vida, a Mars-like Antarctic environment.
		Lake Vostok is believed to contain water millions of years old, which may be the home of ancient organisms.
		This hidden body of freshwater is the size of Lake Ontario and is the largest of 70 bodies of water first detected under the polar ice-sheet in the 1970s.
	www.astrobio.net /news/article335.html (845 words)

	Augusta Georgia: Technology:2,800-year-old frozen microbes found in Antarctic lake 12/18/02
		The three-square-mile Lake Vida is one of a series of lakes located in the McMurdo Dry Valleys of Antarctica, some 2,000 miles due south of New Zealand.
		Doran said water flows into Lake Vida during some Antarctica summers, but the new water stays on top of the ice, sealing the lake.
		Searching for such extreme life forms in Lake Vida, said Doran, will be good practice for humans who one day will search for evidence of life on Mars.
	chronicle.augusta.com /stories/121802/tec_124-7810.shtml (1032 words)

	Scientific American: Icy Lake Houses Extreme Ecosystem (Site not responding. Last check: 2007-09-17)
		Beneath nearly 20 meters of solid Antarctic ice lies a salty lake that has been sealed off from the atmosphere for close to 3,000 years.
		Lake Vida is located in the McMurdo Dry Valleys region of Antarctica, and its surface remains frozen year round.
		In fact, scientists thought that it was one of several lakes that are completely frozen to their beds all year long.
	www.sciam.com /print_version.cfm?articleID=00083DEF-4B3B-1DFE-8B3B809EC588EEDF (388 words)

	BBC NEWS \| Science/Nature \| Antarctic lake's secret water
		Researchers uncovered the extreme lake, called Lake Vida, along with 2,800-year-old microbes, under 19 metres of ice.
		It had been thought Lake Vida was one of several Antarctic lakes that are frozen to their beds all year-round.
		He said: "The ice cover of these lakes represents an oasis for life in an environment previously thought to be inhospitable.
	news.bbc.co.uk /1/hi/sci/tech/2581485.stm (540 words)

	SPACE.com -- Ancient, Frozen Antarctic Life Revived, Along with Hopes for Life on Mars
		A cyanobacterium of the genus recovered from the ice above Lake Vida in the Antarctic.
		The Lake Vida creatures are unique for their age, determined by the age of ice in which they were embedded.
		When the study began, the scientists had thought Lake Vida might be a frozen chunk of ice, like other known "lakes" in the region.
	www.space.com /scienceastronomy/antarctic_life_021216.html (903 words)

	Researchers Uncover Extreme Lake -- And 3000-Year-Old Microbes -- In Mars-Like Antarctic Environment (Site not responding. Last check: 2007-09-17)
		New Map Reveals Hidden Features Of Ice-buried Antarctic Lake; Two Distinct Ecosystems May Exist (July 13, 2004) -- The new comprehensive measurements of the lake -- roughly the size of North America's Lake Ontario -- indicate it is divided into two distinct basins that may have different water chemistry and...
		Researchers Describe Overall Water Balance In Subglacial Lake Vostok (March 22, 2002) -- Lake Vostok, which lies buried under thousands of meters of ice high on the Antarctic Plateau, is thought to be home to unique habitats and microorganisms.
		The bacteria came from Lake Vostok, a subglacial...
	www.sciencedaily.com /releases/2002/12/021217072303.htm (1007 words)

	Vida Salon
		Born in Cuba, Vida Guerra moved with her family to the United States soon after, and they ended up in the town of Perth Amboy, New Jersey.
		From an early age, she was noted for the size of her derrierre, which was rather large for someone of her otherwise small stature.
		Vida Samadzai (born 1980) is Miss Afghanistan 2003.
	www.artistbooking.com /trips/216/vida-salon.html (985 words)

	Formation and character of an ancient 19-m ice cover and underlying trapped brine in an "ice-sealed" east Antarctic ...
		Lake Vida, one of the largest lakes in the McMurdo Dry Valleys of Antarctica, was previously believed to be shallow (<10 m)
		is from the Lake Vida meteorological station) (1).
		Lake Vida represents an aquatic ecosystem that is the result of an unusual combination of summers warm enough to generate
	www.pnas.org /cgi/content/full/100/1/26 (3695 words)

	Mysterious Lake Vostok (Site not responding. Last check: 2007-09-17)
		Lake Vostok is located almost in the center of the Antarctic.
		Encompassing the Southwest corner of the lake, 65 X 46 miles there are indications that the geological structure changes beneath the lake.
		Lake Vostok is the largest lake, and probably one of the largest ISOLATED eco-systems in the world.
	www.70south.com /news/989352796/index_html (11161 words)

	Antarctic Ice Seals Life's Fate
		NASA and the National Science Foundation are jointly funding a follow-up study to test miniature coring equipment and to dip a straw-like device into the brine of Lake Vida to suck- out samples.
		Lake Vostok, which lies buried under thousands of meters of ice high on the Antarctic Plateau, is thought to be home to unique habitats and microorganisms.
		Confirming the existence of life forms and unique biological niches without contaminating the pristine lake waters, however, is a difficult scientific and technical challenge with international ramifications.
	www.spacedaily.com /news/antarctic-02t.html (1193 words)

	Research and Creative Activities 2003
		"The ice covers of these lakes represent an oasis for life in an environment previously thought to be inhospitable," Priscu said when the discovery on Lake Vida was announced in the Proceedings of the National Academy of Sciences.
		Priscu calls these lakes ice museums because they harbor ancient DNA that is preserved by the cold, salty and arid conditions.
		The discovery of microbes in Lake Vida may also help researchers who are studying Lake Vostok, a larger lake that lies more than 2.5 miles beneath the East Antarctic Ice Sheet.
	www.montana.edu /wwwvr/activities/activities03/antarctica2.html (1280 words)

	Lake Vida (Site not responding. Last check: 2007-09-17)
		Well, if we're talking about an Antarctic lake, like Lake Vida, and you're a scientist, the answer is plenty.
		But what really has got scientists talking is the recent discovery that beneath all that ice, Lake Vida is still liquid.
		If Lake Vida contains life, then these places might be harboring extraterrestrial microbial life as well.
	amos.indiana.edu /library/scripts/vida.html (264 words)

	The Antarctic Sun (Site not responding. Last check: 2007-09-17)
		One of the holes went in near Lake Vida in Victoria Valley.
		Kirsten Wade, bottom right, was part of the team that went to Lake Vida last week to find out what became of a decades-old, diesel-filled bore hole.
		There were a number of unpleasant possibilities, the worst of which would have been that the fuel was somehow released into Lake Vida when the lake's level rose above the standpipe in the mid-1990s.
	www.polar.org /AntSun/oldissues2000-2001/2000_1126/vida.html (700 words)

	MSU News -- Veteran Antarctic researchers make another discovery
		The area receives less than four inches of snow per year and the average annual temperature hovers around -22 F. Scientists previously thought Lake Vida, like several Antarctic lakes, was frozen to its bed year-round.
		Priscu and Adams are studying Vostok ice cores drilled close to where the ice layer meets liquid water, and Priscu heads an international team of scientists concerned with how to sample the ancient water without contaminating it.
		The researchers think Lake Vida may also offer clues for how to look for simple life forms in outer space.
	www.montana.edu /news/1040081835.html (574 words)

	CTV.ca \| 2,800-year-old bacteria found frozen in Anarctica
		The research may help in the search for life on Mars, which is thought to have subsurface lakes of ice.
		Called Lake Vida, the eight-square-kilometre body is one of a series of lakes located in the McMurdo Dry Valleys of Antarctica, some 3,200 kilometres south of New Zealand.
		While at the site for other research in the 1990s, Doran and his colleagues sent radar signals into the clear ice covering the lake and were surprised to find that about 20 metres below there was a pool of liquid water that was about seven times more salty than seawater.
	www.ctv.ca /servlet/ArticleNews/story/CTVNews/1040078398113_6 (831 words)

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