Not exact matches
When
slabs of Earth's crust sink into the mantle layer below, they drag
ocean water with them.
Here, a
slab of the Pacific
Ocean floor called the Juan de Fuca plate slides eastward and downward, «subducting» underneath the continental plate
of North America.
The researchers then used the model to investigate how
slabs of ocean crust would behave as they travel down toward the lower mantle.
Sinking
slabs of ocean crust and rising plumes
of hot rock in Earth's mantle are observed to behave differently below one megameter (1,000 kilometers) depth.
Using supercomputers, the researchers found that this dense piece
of ocean floor material (called a lithospheric
slab) is slowly sinking into the Earth's mantle and is responsible for the formation
of the Lake Eyre Basin, one
of the Earth's largest internally drained basins and home to the lowest point in Australia at 15m below sea level, as well as the Murray - Darling Basin, home to the largest river system in Australia.
The ice stretches over these sticking points twice per day as the tide lifts up and sets down the Ross Ice Shelf, a 1,100 - foot - thick
slab of ice the size
of Spain that hangs over the
ocean several hundred miles away.
Surprise find The team's actual mission was to survey
ocean currents near the Ross Ice Shelf, a
slab of ice extending more than 600 miles (970 kilometers) northward from the grounding zone
of the West Antarctic Ice Sheet into the Ross Sea, to model the behavior
of a drill string, a length
of pipe extending to the seafloor which delivers drilling fluids and retrieves sediment samples.
Slabs continued to calve and break up throughout the next 10 days; by March 8 the Wilkins ice shelf, comprising some 5,000 square miles
of floating ice off the coast
of the Antarctic Peninsula, had lost 160 square miles
of ice to the Pacific
Ocean.
Lead author
of the study, Dr Caroline Eakin, Research Fellow in
Ocean and Earth Science at the University
of Southampton, said: «The process
of consuming old seafloor at subduction zones, where great
slabs of oceanic material are swallowed up, drives circulation in the Earth's interior and keeps the planet going strong.
Submarine volcanoes generate the solid underpinnings
of all the world's
oceans massive
slabs of rock seven kilometers thick.
Current projections
of global sea level rise do not account for the complicated behavior
of these giant ice
slabs as they interact with the atmosphere, the
ocean and the land.
The mean and median
of the equilibrium land -
ocean warming contrast (using a
slab ocean) in the GCMs considered is ~ 1.3 (with a spread
of about 1.2 - 1.5).
These trenches form along subduction zones where
slabs of the
ocean floor slide into the Earth.
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Convey, Fire Sprinkler, Smoke Detector, Washer / Dryer, Wshr / Dryer Connection, Furnished, Ceiling Fan,Walk - in Closet, Oceanfront, East
Of Bus 17, Outside City Limits,
Ocean Front, Double Sink, Shower, Vanity, Whirlpool Tub, Lvr / DR Combo, Central Heat, Central Air, Electric,
Slab, Electric, Cable TV, Electricity, Sewer, Telephone, Underground Utilities, Water Public, Dishwasher, Garbage Disposal, Refrigerator, Breakfast Bar, Oven, Microwave, Pantry, Stainless Steel Apps., Granite Countertops, Ceiling Fan
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Ocean Front, Double Sink, Shower, Vanity, Whirlpool Tub, Lvr / DR Combo, Central Heat, Central Air, Electric,
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All but surrounded by the Atlantic
Ocean, with hot summers and an abundance
of beautiful surf spots — offering everything from peeling point breaks to barrel - throwing
slabs — Cornwall is perfectly suited to the sport.
Improvements include the addition
of Sub-Zero and Wolf kitchen appliances surrounded by
slab granite counter tops, and open walls to view the
ocean and spacious surroundings.
I then applied a 1 watt / sq meter forcing to a 10 meter thick
slab of ocean and he atmosphere above to get a warming
of 0.6 C per year.
A — I think they call it a «swamp
ocean», or maybe a
slab ocean — heat capacity may be modelled (I won't write it in computer code exactly; T is temperature, ECS is equlibrium climate sensitivity here expressed as K per doubling
of CO2, y = year number):
While there are some similarities between the approaches, an important difference is that the
slab -
ocean approach allows surface and MBL temperatures to adjust to the energetic perturbation: positive energetic forcing
of the surface leads to warming, weakens the inversion, and reduces low - cloud cover and liquid water path (LWP).
I saw a poster a at a meeting last year that compared a simulation with prescribed SST to another with a
slab ocean model (SOM) and the results were very striking, so I started thinking that I need to explore this type
of modelling more.
CP rationalized doing so on the basis that cool runs (nearly 50 %
of the control runs) were not realistic and reflected, e.g., the simple
slab ocean in their model.
Of course, the simple
slab ocean didn't obviate the hot runs they kept.
In general, the pattern
of change in return values for 20 - year extreme temperature events from an equilibrium simulation for doubled CO2 with a global atmospheric model coupled to a non-dynamic
slab ocean shows moderate increases over
oceans and larger increases over land masses (Zwiers and Kharin, 1998; Figure 9.29).
You've got a 2 mile thick
slab of ice sitting on a land mass that is tough for any outside energy from atmosphere (and certainly not
ocean) to penetrate.
Some recent results with AGCMs coupled to
slab ocean models (Hewitt et al., 2001; Vavrus and Harrison, 2003) support the hypothesis that a representation
of sea ice dynamics in climate models has a moderating impact on climate sensitivity.
Left column is the name
of ensembles, and in the second left column, «AOGCM» denotes atmosphere —
ocean coupled GCM, and «ASGCM» denotes atmosphere -
slab ocean coupled GCM.
I've discussed one aquaplanet study
of TCs using a
slab ocean, Merlis et al 2013, in post # 42.
The response
of the ITCZ to extratropical thermal forcing: idealized
slab -
ocean experiments with a GCM.
These aquaplanet simulations are sometimes run with prescribed sea surface temperatures (SSTs) and sometimes with prescribed heat flux through the surface (usually realized by running the atmosphere over a «
slab ocean» s saturated surface with some heat capacity, and specifying an «oceanic heat flux» into or out
of the
slab.
These giant
slabs of ice, floating on the
ocean while still attached to the continent, are called ice shelves.