Showing posts with label ice shelf. Show all posts
Showing posts with label ice shelf. Show all posts

Wednesday, July 30, 2008

Another Chunk of Ward Ice Shelf Disappears

Toronto Star: BOB WEBER/THE CANADIAN PRESS FILE PHOTO
Canadian Ranger Samson Ejanqiaq looks along one of the gaping new cracks in the Ward Hunt Ice Shelf, the largest left in the Arctic, in April 2008.


BBC: Canadian Arctic sheds ice chunk
A large chunk of an Arctic ice shelf has broken free of the northern Canadian coast, scientists say.

Nearly 20 sq km (eight sq miles) of ice from the Ward Hunt shelf has split away from Ellesmere Island, according to satellite pictures.

It is thought to be the biggest piece of ice shed in the region since 60 sq km of the nearby Ayles ice shelf broke away in 2005.

Scientists say further splitting could occur during the Arctic summer melt.

Globe & Mail (CAN): Huge chunk snaps off storied Arctic ice shelf
Break marks latest in erosion that has whittled 9,000 square kilometres down to 1,000 over past century


Toronto Star: Ice break ominous, Arctic scientist says
North's ancient shelves `are retreating and they are not coming back,' researcher warns

Friday, June 20, 2008

I Read The News Today, Oh Boy: June 20, 2008

National Geographic: Kiribati Beach House
Photograph by George Steinmetz/CORBIS


A tiny group of Pacific coral islands, the Republic of Kirabati, with a population of less than a hundred thousand, will be submerged under the ocean in 50 to 100 years as a result of rising ocean waters. Bangladesh, the most crowded nation on earth, population 150,000,000 -- One Hundred and Fifty Million Human Beings -- will be completely underwater by the end of this century, according to NASA scientist Dr. James Hansen.

And those estimates may be accelerated, as data from the US National Snow and Ice Data Center (NSIDC) shows that Arctic sea ice is melting even faster than it did last year. An example of the chaos that this will bring is in Iceland, where two polar bears were shot in the past two weeks when they showed up hundreds of miles from their habitat.

And what are the Bush Administration and their rubber stamps in Congress doing to address global warming? Nothing. No, take that back, less than nothing. Republicans in the Senate blocked a bill to cut greenhouse emissions last week. The United States taxpayers are being forced to pay to build permanent bases in Iraq, which are surely to provide security for the oil companies (Exxon, Total, BP and Shell) which have just been awarded no-bid contracts to exploit the Iraqi oil fields. The Oilman-In-Chief sent thousands of American soldiers and hundreds of thousands of Iraqis to their deaths for the bottom line of Exxon.

Which of his crimes will Bush pay for? The torture he personally authorized? (though he is now trying to blame it on the soldiers, we know that it was the Bush Administration's official policy, memorialized in legal memos and West Wing meetings.) Maj. General Antonio Taguba writes this week that the Bush Administration committed war crimes, and recommends prosection. The Democratic Sheeple Party is unlikely to do so; we let everyone involved in Iran-Contra go, too.

By failing to prosecute the war criminals who perpetrated Iran-Contra, we populated the Project for a New American Century and all the other right wing "think tanks" with all those unindicted co-conspirators, who spent years conspiring on their next nefarious plan: to get us to attack Iraq. As Digby says: When you let Republicans get away with murder, they will do it again.

Some days reading the news is nihilistic. I'm going to take the weekend off from political blogging & regain my equilibrium.

Friday, March 28, 2008

Antarctic Ice Shelf Collapses

An image of the Wilkins Ice Shelf disintegration taken from the British Antarctic Survey's Twin Otter aircraft reconnaissance flight. Credit: Jim Elliott, British Antarctic Survey


Biggest news (no pun intended) of my week off is the collapse of a portion of the Wilkins Ice Shelf in Antarctica. Variously described as "seven times the size of Manhattan" (National Geographic), "the size of the Isle of Man" (BBC News), "bigger than the city of Montreal" and "twice the size of Prince Edward Island" (AP/The Globe and Mail), and "the size of Northern Ireland" (Independent uk), the piece that collapsed is merely the edge of the larger Wilkins Ice Shelf which is "'hanging by a thread' and may soon break up". British scientists predicted the collapse in 1993, but they thought it would take 30 years; it took 15.

The Antarctic peninsula, which stretches north from the frozen continent towards South America, has experienced unprecedented warming over the past 50 years.

Six other ice shelves have already been lost entirely — the Prince Gustav Channel, Larsen Inlet, Larsen B, Wordie, Muller and Jones shelves.

But the Wilkins shelf is farther south than other ice that has retreated, so should be better protected by colder temperatures.

Vaughan said: "It's bigger than any ice shelf we've seen retreating before, and in the long term it could be a taste of other things to come. It is another indication of the impact that climate change is having on the region."

During the break-up, the Wilkins Ice Shelf broke into a sky-blue pattern of exposed deep glacial ice. This true-color image of the Wilkins Ice Shelf was taken by NASA's Moderate Resolution Imaging Spectroradiometer (MODIS) sensor on March 6, 2008. Credit: National Snow and Ice Data Center