The instruments and new aircraft flights will provide further insight
into shelf break - up and the onset of ice acceleration.
Has anyone put the pieces together yet and considered how these improvements in understanding
ice shelf break - up translate to predicting sea level rise?
They found that 68 percent of the variance in the date that ice retreats from the
continental shelf break in the Chukchi Sea in spring can be explained by fluctuations in the April through June Bering Strait oceanic heat inflow.
Generally, the flat
shelf breaks at around 350 feet below sea level, where an abrupt drop signals the start of the continental slope, followed at two or three miles deep by a more level segment called the continental rise.
First of all, less sea ice is forming in the region, and secondly, oceanographic recordings from the continental
shelf break confirm that the warm water masses are already moving closer and closer to the ice shelf in pulses,» says Dr Hartmut Hellmer, an oceanographer at the AWI and first author of the study.
The decrease in basal melt was attributed to stronger easterly winds that encouraged downwelling along the
Amundsen shelf break, which lowered the top of the thermocline (where cold winter waters meets warm CDW) and reduced the volume of upwelled warm CDW intruding onto the shelf.
This week, the Larsen C ice
shelf broke away from Antarctica, setting a one trillion ton iceberg afloat in the Wedell Sea.
Exposed
wooden shelves break up the long run of grey units on the breakfast bar, and provide a useful storage space for cookery books.
Open shelves break up the cabinetry and offer a modern counterpoint to the traditional Shaker - style doors.
We can expect to learn a lot about how
ice shelves break up and how the loss of a section of an ice shelf affects the flow of the remaining parts.»
This interaction may occur anywhere in the ocean, in particular in regions where surface - gravity waves interact as they reflect from
continental shelf breaks, where the deep - sea suddenly faces a much shallower shoreline.
When
the shelf broke, she and colleagues predicted, it would be the largest calving event in decades.
Sjögren's fjord held ice 600 meters thick as recently as 1995, right before the Prince Gustav ice
shelf broke up, but now it holds seawater instead.
When the Larsen C ice
shelf broke, it exposed a hidden world.
«The paper is not just about the reef itself, but about how the reef community changes as you travel north along
the shelf break, in response to how much light it gets seasonally by the movement of the plume,» said Patricia Yager, an associate professor of Marine Sciences in UGA's Franklin College of Arts and Sciences and principal investigator of the River - Ocean Continuum of the Amazon Project, in a statement.
Filaments near
the shelf break and eddies offshore indicate the complexity of interactions between the LME and the slope sea.
Based on the seasonality of ice
shelf break up, and the geographic distribution of ice shelf collapse near the southerly - progressing -9 °C isotherm, it appears that surface ponding is necessary for ice - shelf collapse [12].
Catastrophic ice -
shelf break - up by an ice - shelf - fragment - capsize mechanism.
Generally, according to Dr. Jahncke, if humpbacks are observed along
the shelf break at the ocean bottom, they are feeding on krill.
It is interesting to note that it was around this time the Larsen ice
shelf broke off.
8) Accelerated mass loss in Greenland and / or Antarctica, perhaps with another huge ice
shelf breaking off, but in any case coupled with another measurable rise in the rate of sea level rise, 9) The Fifth Assessment Report (2012 - 2013) really spelling out what we face with no punches pulled.
For a rational survey of the science, try Neven's You Do It To Your Shelf: Canadian Ice
Shelves Breaking up at High Speed.
Ice shelf disintegration by plate bending and hydro - fracture: Satellite observations and model results of the 2008 Wilkins ice
shelf break - ups.
The current is strongest and warmest at
the shelf break, where surface waters flow at up to 2 m s − 1 and temperatures vary from 20 °C to 28 °C, depending on season [7].
Predictions made by British Antarctic Survey scientists in 1998 that the warming of the Antarctic Peninsula region would put several ice shelves at risk were realized in 2002 when, in less than a month, 500 billion metric tons of ice from the Larsen B ice
shelf broke up into thousands of small icebergs.
Scientists, however, believe it is too early and convenient to blame climate change for the Larsen C ice
shelf break.
They also found that 67 percent of the variance for the date at which ice advances back to
the shelf break in autumn and winter can be related to the combined effects of the July through September Bering Strait inflow and the date of ice retreat.
As illustrated above the direction of the wind over
the shelf break determines the amount of CDW that reaches the glaciers grounding points along the peninsula and Amundsen Sea.
At many locations along the continental
shelf break, cold polar water pushes back against the CDW, creating a barrier (analogous to an atmospheric weather front) known as the Antarctic Slope Front, which blocks CDW from getting onto the shelf.
EIKE writes: Antarctic ice
shelf breaking is a totally normal -LSB-...]
A warm band of relatively constant temperature (18 - 22 °C) and salinity (36.0 - 36.2 psu) is observed near the bottom year - round just inshore of
the shelf break, bounded by seasonally variable waters on the inshore side, and by fluctuating waters subject to cool - water upwelling events and warm Gulf Stream intrusions on the offshore side.
The warming influence of the Gulf Stream in the SAB is especially notable from January through March near
the shelf break, where tropical species of fishes, corals, and other animals are found.
Low frequency variations in currents near
the shelf break, northeast Gulf of Alaska.
In lieu of my mistakes, I still love how
our shelf breaks up the monotony of cabinets and visually opens up our kitchen.
The shelves break up the heavy look of solid cabinetry, while the window behind them adds dimension.