Nares Ice Bridge Breakup
The ice bridge in Nares Strait at the Kane Basin outlet to Baffin Bay has begun to break up.
There was a plug of consolidated ice solidly wedged across the channel. Consolidated ice is very strong in compression, but weak in tension, as I have noted in other articles, such as Bridges That Build Themselves
. From that article:
An Arctic Decade 2001 - 2011
For thousands of years the Arctic has been covered in perennial ice with seasonal changes at the margins and some natural variation, seen as losses and recoveries of extent.
For hundreds of years observers have noted that seasonal and local variations at the margins can leave some relatively small regions ice free one year, and solidly iced up in other years.
The Greenland and Antarctic ice sheets are losing mass at an accelerating pace, according to a new study in Geophysical Research Letters. The authors suggest these ice sheets are overtaking ice loss from Earth's mountain glaciers and ice caps to become the dominant contributor to global sea level rise.
Ross Ice Shelf - Some ObservationsThe Ross Ice Shelf is the largest ice shelf in the world with an area of roughly 182,000 square miles - 472,000 square kilometers. The shelf was named after Captain James Clark Ross who discovered it January 28th, 1841.
The coast to which the ice shelf is attached reaches nearer to the south geographic pole than any other part of Antarctica's coast.
Image source: NASA/MODIS Antarctic mosaic.
A Census of Marine Life expedition discovered a new character for the Mr. Men and Little Miss series - "Mr. Blobby," the fathead sculpin fish, lives in the Atlantic, Indian, and Pacific Oceans at depths of between about 330 feet (100 meters) and 9,200 feet (2,800 meters), according to National Geographic.
A group of researchers say receding glaciers due to global warming at the end of the last ice age, 20,000-100,000 years ago, resulted in the rampant biodiversity left behind in their wake.
Certainly it is true there is much less biodiversity at the poles, though likely there are limits in how hot we want the planet to be.
Investigating fossil clams and snails Steffen Kiel and Sven Nielsen at the Christian-Albrechts-Universität zu Kiel (CAU) say retreating glaciers created a mosaic landscape of countless islands, bays and fiords in which new species developed rapidly, geologically speaking.
We are a water planet but 10% of Earth is covered in ice - ice that is melting in ways that have to be a concern.
To get a handy view of what is happening in the big areas, Greenland, the Arctic and the Antarctic, NASA have put together a Global Ice Viewer
You can zoom in on Ilulissat Glacier, which is is depositing icebergs in cubic kilometer denominations equivalent to 9.3 trillion gallons per year - if that sounds like 14 million Olympic-sized swimming pools every 365 days, it is. Or Antarctica, where ice shelves the size of small U.S. states have collapsed in recent years.