New Bathymetry with better Resolution

The new grid is on a 500 meter spacing, revealing much greater details of the Arctic seafloor than IBCAO Version 1.0 (2.5 km) and Version 2.0 (2.0 km). The area covered by multibeam surveys has increased from ~6 % in Version 2.0 to ~11% in Version 3.0. The compilation of IBCAO Version 3.0 is described in a Geophysical Research Letter article available for download.

Most interesting feature is the Lomonosov Ridge which splits the Arctic basin in half. Denmark and Russia are trying to find evidence showing the ridge is a extension of their ...

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Sea Ice Decline in Canada's Regions

Statistics Canada just released the Winter report 2011 including detailed information about sea ice shrinkage over a 43 year period. The largest declines occurred in five southern and eastern sea ice regions:

  • Northern Labrador Sea, where sea ice decreased at a rate of 1,536 square kilometres, or 17 per cent, per decade,
  • Hudson Strait (down 4,947 square kilometres, or 16 per cent, per decade)
  • Davis Strait (down 6,581 square kilometres, or 14 per cent, per decade)
  • Hudson Bay (down 16,605 square kilometres, or 11 per cent, per decade)
  • Baffin Bay (down 18,658 square kilometres, or ...
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