Sentences with phrase «relatively warm deep water»

Driven by stronger winds resulting from climate change, ocean waters in the Southern Ocean are mixing more powerfully, so that relatively warm deep water rises to the surface and eats away at the underside of the ice.

Not exact matches

In a recent paper published in Nature Geoscience, his team identified two deep underwater cavities beneath the glacier that they note could be pathways for relatively warm ocean water to reach the underside of the glacier, enhancing its melting.

MELT OFF Off the coast of the western Antarctic Peninsula (shown), upwelling of relatively warm, deep water has been linked to the melting of ice shelves, which help buttress the region's glaciers.

That deep water is not only rich in nutrients, it also has relatively high concentrations of carbon dioxide, both because it is cold (cold water can absorb and hold more carbon dioxide than warm water) and because the decomposition of organic matter that sinks into the depths releases carbon dioxide.

Deep ocean water, which is relatively warm, has been melting portions of the ice sheet at its base.

OTEC is a relatively marginal alternative energy source that uses cold deep water and warm surface water to run the equivalent of a reverse fridge cycle.

The findings, published yesterday in the journal Nature, show that during the past 11,000 years, wind patterns have driven relatively warm waters from the deep ocean onto Antarctica's continental shelf, leading to significant and sustained ice loss.

In red the relatively warm surface flow is seen, in blue the cold deep water flow.

I have also read in a reputable book that one of the reasons the warm pool is higher is merely due to the fact that warm water occupies more room, ie for hydrostatic equilibrium to apply the relatively deep warm pool should be higher than the cooler water to the East.

The relatively warm water flowing through the glacier also carries surface heat deep inside the ice sheet far faster than it would otherwise penetrate by simple conduction.

The anomolous expansion of liquid water with cooling at temperatures less than 4 °C, means that the bottom of a frozen garden pond can remain relatively warm, if it is deep enough.

But as relatively warm water from deep reaches of the Southern Ocean moved onto the continental shelf, the thinning sped up, melting the ice shelves from underneath, the researchers of the new study concluded.

dana1981 - An additional part of that correction is that the deeper subsurface Antarctic waters are (relatively) warmer than surface waters, not colder as stated in the OP.

The paper discusses that melting ice will decrease the salinity of the ocean waters around Antarctica, which will cause decreased mixing with the relatively warmer deep ocean waters, reducing sea surface temperatures, causing more sea ice to form.

The reason for this concentrated melting is due to the upwelling of relatively warm Circumpolar Deep Water that lurks 300 feet below the surface.

New Dutch research has shown for instance the overturning has been relatively weak in recent years [which means cold water has accumulated close to the surface instead of sinking to deeper waters, one of two reasons why there has been a lull in upper ocean warming].

This melting was attributed to the presence of relatively warm, deep water on the Amundsen Sea continental shelf.»

This circumpolar deep water, which is relatively warm and salty compared to other parts of the Southern Ocean, has warmed and shoaled in recent decades, and can melt ice at the base of glaciers which reduces friction and allows them to flow more freely.

Warming bottom waters in deeper parts of the ocean, where surface sediment is much colder than freezing and the hydrate stability zone is relatively thick, would not thaw hydrates near the sediment surface, but downward heat diffusion into the sediment column would thin the stability zone from below, causing basal hydrates to decompose, releasing gaseous methane.

The deep shelf warming is initiated by onshore intrusions of relatively warm Circumpolar Deep Water (CDW), in density classes that access the shelf, as well as the reduction of the vertical mixing of hdeep shelf warming is initiated by onshore intrusions of relatively warm Circumpolar Deep Water (CDW), in density classes that access the shelf, as well as the reduction of the vertical mixing of hDeep Water (CDW), in density classes that access the shelf, as well as the reduction of the vertical mixing of heat.