Dictionary definition: ablation zone

Article: Flap size should be equal to the ablation zone ...
Ophthalmology Times;  June 15, 2008 ;     653 words ... ... Vision Institute, Los Angeles. Dr. Devgan said that the ideal situation is having a flap size that is equal to that of the ablation zone. "To do this, the flap has to be perfectly centered on the pupil. The pupil is the bull's-eye target that the ablation ...

Dictionary definition: accumulation zone
A Dictionary of Weather;      248 words ...accumulation zone The zone of a glacier in which the amount of snow and ice that is deposited exceeds that lost by deflation , evaporation , melting, or other means. Compare ABLATION ZONE .

Article: Sounding the retreat.(Geographical dossier: SPECIAL ...
Geographical;  December 1, 2007 ;     700+ words ... ... There are two zones along a glacier: the accumulation zone and the ablation zone. The accumulation zone is where the mass of the glacier accumulates. Ice is lost, in the ablation zone, through melting, sublimation (when ...

Article: Glaciers and Ice Sheets
Water:Science and Issues;      700+ words ... ... ice and rock from a high-elevation accumulation zone to a lower-elevation ablation zone. The accumulation zone is that part of the glacier, ice ... through the summer season. In the ablation zone, summertime melting removes the winter ...

Encyclopedia entry: glaciers and glaciology
The Oxford Companion to the Earth;      700+ words ... ... an upper accumulation zone, where accumulation ... and a lower ablation zone, where ablation ... ice in the accumulation zone and its loss in the ablation zone cause the ... from the accumulation zone to the ablation zone to counteract ...

Dictionary definition: glacier
A Dictionary of Weather;      319 words ... ... icebergs if they end at open water. Snow that falls in the accumulation zone is transformed into firn and eventually becomes compacted ... consolidated into glacier ice. Below the firn line , in the ablation zone , mass loss through melting, sublimation , or calving exceeds ...

Article: Glacial Landforms and Features
U*X*L Encyclopedia of Landforms and Other Geologic Features;      700+ words ... ... Hemisphere. Glacial landforms and features: Words to Know Ablation zone: The area of a glacier where mass is lost through melting ... evaporation at a greater rate than snow and ice accumulate. Accumulation zone: The area of a glacier where mass is increased through ...