pressure ridge


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pressure ridge

[′presh·ər ‚rij]
(geology)
A seismic feature resulting from transverse pressure and shortening of the land surface.
An elongate upward movement of the congealing crust of a lava flow.
A ridge of glacier ice.
(oceanography)
A ridge or wall of hummocks where one ice floe has been pressed against another.
References in periodicals archive ?
As is typical with Western Oregon summer heat waves, the culprit is an intensifying high pressure ridge that is keeping out moist and cool marine air that might otherwise move in from the Pacific Ocean.
Right now, my research team is looking at what size pressure ridge should we consider?
A high pressure ridge is going to cause the weather to fine up in Tasmania and Victoria on Jan 1.
A high pressure ridge off the West Coast (typical of historic droughts) prevailed for three winters, blocking important wet season storms, with ocean surface temperature patterns making such a ridge much more likely.
A cold front is by definition the estimated position of the interactive zone between a low pressure col and a high pressure ridge behind it.
When we came to a pressure ridge we unhooked the dogs and portaged the sled over the treacherous ice chunks.
Earlier the same day both had taken dramatic falls, with 33-year-old Parks ending up "dazed" after he slipped on another pressure ridge and was hit on the head by his 50kg sleigh.
On several occasions the sleds actually left the ground as they hurtled back down the other side of a pressure ridge before crashing into the next wall of ice.
Efforts to secure a hovercraft barge to cut a channel for the whales were stymied by technical problems and an impregnable 30-foot-high pressure ridge.
Meanwhile, the typical Atlantic high pressure ridge had to wait its turn as the first low pressure system drifted to the east, and the second dissipated as it moved to the south.
D'Aleo said a high pressure ridge that caused record-breaking heat and dry weather in the Midwest and Great Plains forced the jet stream south of Central Massachusetts for much of the summer, keeping the crop-killing high heat from making many extended incursions into this area.
Jamie also fell up to his knees in slushy water trying to cross a pressure ridge near to Thor Island.