Tampilkan postingan dengan label Arctic. Tampilkan semua postingan
Tampilkan postingan dengan label Arctic. Tampilkan semua postingan

Jumat, 17 Juni 2011

Naked Russian diver swims with beluga whales in Arctic

English.news.cn   2011-06-17


Russian diver Natalia Avseenko, 36, stripped naked to swim with two
beluga whales in sub-zero water in the Arctic.
(Photo: voc.com.cn)







Editor: Yang Lina

Selasa, 05 April 2011

Scientists study pool of Arctic Ocean fresh water

The Jakarta Post, Associated Press, Amsterdam | Tue, 04/05/2011

Scientists are monitoring a massive pool of fresh water in the Arctic Ocean that could spill into the Atlantic and potentially alter the ocean currents that bring Western Europe its moderate climate.

The oceanographers said Tuesday the unusual accumulation has been caused by Siberian and Canadian rivers dumping more water into the Arctic, and from melting sea ice. Both are consequences of global warming.

If it flushes into the Atlantic, the infusion of fresh water could, in the worst case, change the ocean current that brings warmth from the tropics to European shores, said Laura De Steur, of the Royal Netherlands Institute for Sea Research.

German researcher Benjamin Rabe, of the Alfred Wegener Institute, said the Arctic's fresh water content had increased 20 percent since the 1990s, or by a 8,400 cubic kilometers. That is the equivalent of all the water contained in Lake Michigan and Lake Huron in the U.S. or double the volume of water in Lake Victoria, Africa's largest lake.

Increased runoff from the great northern rivers "could potentially impact the large scale ocean circulation in the Atlantic Ocean. This is important for us in Western Europe because our climate is pretty much dictated by the Thermohaline ocean circulation," said De Steur.

The Thermohaline current loops like a conveyer belt from the tropics to the North Atlantic, driven by the differences in salt content and wind patterns. Warm water from the south gains in salinity and grows heavier as it cools. At its northern end the current is further chilled by cold air and sinks, warming again and rising as it travels south.

That cycle could be affected when the pool of fresh water is released into the Atlantic, said De Steur and Rabe. The icy water has been kept bottled up in the Arctic by wind patterns, which have not shifted their general clockwise direction for the unusually long time of 12 years. Normally, the winds change at intervals of five to 10 years.

The two scientists spoke to The Associated Press as part of a European Union initiative, called Clamer, to collate and publicize information from 300 EU-funded research projects conducted over the last 13 years on climate change and marine ecology. Rabe and colleagues from the Alfred Wegener Institute in Bremerhaven, Germany, published their research last year in the journal Deep Sea Research on the effects of higher river runoff on ocean salinity.

De Steur said most of the excess fresh water has collected in the Canada Basin, but in the last three years changes also have been noticed in the Eurasian side of the Arctic Ocean.

"It's important to monitor this to see if this can be transported to the Atlantic, where it might potentially effect the Gulf Stream and the Thermohaline circulation," she said.

Rabe cautioned that scientists have not been studying the situation long enough to predict what may happen, and the results of model simulations also were inconclusive.

Rabu, 24 November 2010

US designates 'critical' polar bear habitat in Arctic


WASHINGTON — The US government on Wednesday designated "critical habitat" for polar bears who live on Alaska's disappearing sea ice, a move that could impact new oil and gas drilling projects in the Arctic.

The United States has classified the polar bear as
"threatened," but not endangered
The Fish and Wildlife Service set aside 187,000 square miles (484,000 square kilometers) off Alaska as the threatened bears' habitat, which means any project that could impact the animals' way of life must undergo careful review.

"This critical habitat designation enables us to work with federal partners to ensure their actions within its boundaries do not harm polar bear populations," said Tom Strickland, Assistant Secretary for Fish and Wildlife and Parks.

"Nevertheless, the greatest threat to the polar bear is the melting of its sea ice habitat caused by human-induced climate change. We will continue to work toward comprehensive strategies for the long-term survival of this iconic species."

The move falls short of barring any drilling or other activity in the area, but "identifies geographic areas containing features considered essential for the conservation of the bear that require special management or protection."

US environmental advocates earlier this month warned that polar bear habitats could be disrupted if oil companies eager to exploit the Arctic for fuel were to experience an accidental spill like the BP gusher in the Gulf of Mexico.

The Fish and Wildlife Service acknowledged that the designation, which includes swaths of the Beaufort and Chukchi Seas off northern Alaska, "encompass(es) areas where oil and gas exploration activities are known to occur."

Any activity there would now have to undergo a review to "identify ways to implement these actions consistent with species conservation," the statement said.

"This applies to oil and gas development activities, as well as any other activity within the range of the polar bear that may have an adverse affect on the species."

The United States has classified the polar bear as "threatened," but not endangered, due to the struggles it endures because the sea ice on which it lives and hunts is melting due to climate change.

The US government is considering opening the Chukchi Sea, a body of water off the coast of Alaska that is shared with Russia, to drilling but is reviewing leases awarded in 2008 after a lawsuit by indigenous people and green groups contended that the government does not have enough facts about how drilling will impact the environment.

Companies like Royal Dutch Shell want to begin drilling in the coming months, once winter ice begins to break up, and are submitting proposals to show they can meet tougher new government regulations.

The US Geological Survey said in 2008 that within the Arctic circle there are 90 billion barrels of oil and vast quantities of natural gas waiting to be tapped, most of it offshore.


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Selasa, 31 Agustus 2010

Greenpeace protesters shut down 'dangerous' oil drilling rig in Arctic

Daily Mail, By MAIL FOREIGN SERVICE, 31st August 2010

Environmental campaigners today claimed to have shut down a 'dangerous' oil drilling operation by a British energy company in the Arctic.

Greenpeace said four expert climbers in inflatable speedboats had evaded Danish navy commanders to climb up the inside of the Cairn Energy oil rig off Greenland.

The four campaigners are now hanging from the rig 15m above the icy Arctic ocean in tents suspended from ropes, halting its drilling operation, Greenpeace said.

Protest: A Greenpeace boat passes near the Cairn Energy Stena Don rig. For activists have climbed into the rig to prevent drilling operations

The campaigners, who are protesting against what they claim are the 'huge risks' energy companies are taking with the environment by drilling for oil in deep water, say they have enough supplies to occupy the tents for several days.

They claim that if they halt drilling for a short time, Cairn will struggle to meet the deadline to complete exploration before the winter conditions set in, forcing the company to abandon the search for oil off Greenland until next year.

Sim McKenna, from the US, who is one of the climbers, said: 'We've got to keep the energy companies out of the Arctic and kick our addiction to oil, that's why we're going to stop this rig from drilling for as long as we can.

'The BP Gulf oil disaster showed us it's time to go beyond oil.

'The drilling rig we're hanging off could spark an Arctic oil rush, one that would pose a huge threat to the climate and put this fragile environment at risk.'

Minggu, 22 Agustus 2010

Inuit villages sue to stop seismic tests for oil, gas

Above the Arctic Circle in Canada near Greenland, five Inuit villages have won a court order that blocks a German icebreaker from conducting seismic tests of an underwater region that abounds with marine life — and possibly with oil, gas and minerals.

The Seattle Times, By Renee Schoof, McClatchy Newspapers, August 21, 2010

Inuit men are hunting for fish and seals (CNN)


WASHINGTON — Above the Arctic Circle in Canada near Greenland, five Inuit villages have won a court order that blocks a German icebreaker from conducting seismic tests of an underwater region that abounds with marine life — and possibly with oil, gas and minerals.

For the villagers who live in this mostly treeless region of fjords, icebergs and polar bears, the case was a victory that forces the national and territorial governments to consult them over the use of their homeland.

The decision comes as Canada, Alaska and other Arctic regions are deciding whether to allow oil and gas development in Arctic waters that are covered by ice for nine or more months each year.

"We've been saying all along that we aren't anti-development, we aren't anti-science," said Okalik Eegeesiak, the president of Qikiqtani Inuit Association, which asked the court of Nunavut Territory to block the geological study. "But we want to be involved, to be sure our environment and our wildlife are protected as much as possible."

Many Inuits depend on hunting, fishing and trapping to feed their families, both for cultural reasons and because food shipped above the Arctic Circle is so expensive. After the Canadian government told the people on Lancaster Sound — the villagers' traditional hunting area — that it planned to conduct the seismic tests, everyone who attended meetings in May opposed the testing, Eegeesiak said.

They were concerned about the immediate impact of the tests on wildlife, but the BP oil blowout also was on everyone's mind, she said.

"We saw every day on TV how difficult it was to contain the spill in the Gulf of Mexico," she said, noting that a spill in the ice and minus-40-degree temperature of winter would be impossible to stop.

Canada, like the U.S., is wrestling with how quickly to push into the Arctic for oil and gas.

Climate change is happening much faster at the high latitudes of the Arctic, giving more opportunity for drilling in ice-free water. The world's addiction to oil, meanwhile, is driving development deeper into the ocean, in places such as the Gulf of Mexico, and into the far north of Alaska and Canada.

Quite possibly, Lancaster Sound, a place that teems with wildlife, will be spared. The government of Canada announced in December that it planned several years of study to determine whether to make the region a marine conservation area.

Most of the world's tusked narwhals and some 40 percent of its beluga whales travel through the sound and feed and give birth in its waters. Rare bowhead whales are there, too, along with many walruses and seals. Millions of birds of many species nest nearby in great concentrations, including ivory gulls, phalaropes and snow geese.

Tourists visit to see the birds, whales, polar bears and icebergs, ride dog sleds over the ice or hunt for musk ox and polar bears.

Canada's minister in charge of environmental affairs and parks, Jim Prentice, said in July that the government remained committed to the idea of a marine park but wanted to go ahead with the seismic mapping to help determine its boundaries.

"The mapping of undersea geology is essential to making better decisions on land use and economic development in the north," Leona Aglukkaq, who represents Nunavut in Parliament, said when the government announced the seismic survey.

On Aug. 8, however, the Nunavut Court of Justice blocked the seismic mapping in Lancaster Sound a day before the icebreaker Polarstern was scheduled to begin its work.

Wegener officials have said the seismic study planned on the Polarstern wasn't the type needed for targeted oil and gas explorations.

The Pew Environment Group, which advocates creating the marine-conservation area, argued that seismic testing wasn't necessary to create a marine park. The Inuit association said underwater mapping for a park already was done in 1989. The Inuit have rights under their land agreement with Canada to continue hunting, fishing and trapping and to be part of decision-making.

"This is a controversy about oil and gas," said Scott Highleyman, the director of Pew's Arctic program. "Now that the judge has ruled, we're looking forward to working constructively with both the Inuit and the government on creation of a park in Lancaster Sound — something we are all in agreement about — to prevent this kind of conflict in the future."

Meanwhile, the next move on Arctic drilling in Alaska is expected soon.

The Interior Department is expected to announce whether it will make any changes to the Bush administration's five-year plan for offshore drilling, which runs from 2007 to 2012.

The Obama administration must decide whether it will sell any more leases in the Beaufort and Chukchi seas, whether to withdraw Bristol Bay from potential leasing and whether to leave in place 215 leases that were sold to oil companies for the Chukchi Sea in 2008.





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