Wednesday, August 27, 2008

Arctic Ice

I saw an article today about how the Arctic sea ice is at it's second lowest level since they started recording the levels. Here's a little clip of the article from the AP...

ANCHORAGE, Alaska — Arctic Ocean sea ice has melted to the second lowest minimum since satellite observations began, according to scientists at the National Snow and Ice Data Center.
Sea ice melt recorded on Monday exceeded the low recorded in 2005, which had held second place.
With several weeks left in the melt season, ice in summer 2008 has a chance to diminish below the record low set last year, according to scientists at the National Snow and Ice Data Center.
Environmental groups said the ice melt was another alarm bell warning of global warming.
"It's an unfortunate sign that climate change is coming rapidly to the Arctic and that we really need to address the issue of global warming on a national level," said Christopher Krenz, Arctic project manager for Oceana.
"This is not surprising but it is alarming," said Deborah Williams, a former Interior Department special assistant for Alaska. "This was a relatively cool summer, and to have ice decrease to the second lowest minimum on record demonstrates that global warming's ongoing impact is profound."
Original link... http://www.foxnews.com/story/0,2933,411521,00.html

Okay, let that digest for a minute and pay attention to the quote I subtly highlighted in blazing yellow. Now, completely unrelated to arctic sea ice melting and surprisingly so under-reported that I'm sure you haven't heard about it is the following article... (can be seen at http://afp.google.com/article/ALeqM5gRI87Fyr-TpE6OBYfAcYxFKSXRJg)

Volcanic eruptions reshape Arctic ocean floor: study
Jun 25, 2008
PARIS (AFP) — Recent massive volcanoes have risen from the ocean floor deep under the Arctic ice cap, spewing plumes of fragmented magma into the sea, scientists who filmed the aftermath reported Wednesday.
The eruptions -- as big as the one that buried Pompei -- took place in 1999 along the Gakkel Ridge, an underwater mountain chain snaking 1,800 kilometres (1,100 miles) from the northern tip of Greenland to Siberia.
Scientists suspected even at the time that a simultaneous series of earthquakes were linked to these volcanic spasms.
But when a team led of scientists led by Robert Sohn of the Woods Hole Oceanographic Institution in Massachusetts finally got a first-ever glimpse of the ocean floor 4,000 meters (13,000 feet) beneath the Arctic pack ice, they were astonished.
What they saw was unmistakable evidence of explosive eruptions rather than the gradual secretion of lava bubbling up from Earth's mantle onto the ocean floor.
Previous research had concluded that this kind of so-called pyroclastic eruption could not happen at such depths due to the crushing pressure of the water.
"On land, explosive volcanic eruptions are nothing exceptional, although they present a major threat," said Vera Schlindwein, a geologist with Germany's Alfred Wegener Institute for Sea and Polar Research, which took part in the study.
But the new findings, published in Nature, showed that "large-scale pyroclastic activity is possible along even the deepest portions of the global mid-ocean ridge volcanic system."
The mid-ocean ridge runs 84,000 kilometres (52,000 miles) beneath all the world's major seas except the Southern Ocean, and marks the boundary between many of the tectonic plates that make up the surface of the Earth.
When continental plates collide into each other, they can thrust up mountain ranges such as the Himalayas.
But along most of the mid-ocean ridge -- including the Gakkal Ridge -- the plates are pulling apart, allowing molten magna and gases trapped beneath the crust to escape.
Sohn and his colleagues gathered their data in July last year aboard the ice breaker Oden, using state-of-the-art instruments including a mutlibeam echo sounder, two autonomous underwater vehicles and a sub-ice camera designed for the mission.
Both sonar and visual images showed an ocean valley filled with flat-topped volcanos up to two kilometres (1.2 miles) wide and several hundred metres high.

Now, I'm no scientist, but I am a thinker... what do volcanoes do besides make land? Anyone?

Anyone?

Bueller?

Bueller?




1 comment:

Prophet Kangnamgu said...

Ha ha... Good observation!