ablation zone

Often mass balance measurements are made in the ablation zone using snow stakes.

Night halos are seen more often in revisions with small ablation zone size.

The ablation zone is the region where there is a net loss in glacier mass.

The annual Glacier equilibrium line separates the accumulation and ablation zone annually.

We used a moving slit delivery system in a 5 mm ablation zone confined by means of a metal iris diaphragm.

Three months postoperatively, the epithelium covering the ablation zone exceeded normal thickness only in very few locations (fig 8).

Meltwater is often found in the ablation zone of glaciers, where the rate of snow cover is reducing.

About half of the area is higher than 2,600 metres, a few hundred metres lower than the limit between the glaciers accumulation and ablation zones.

As the water that rises from the ablation zone moves away from the glacier, it carries fine eroded sediments with it.

Dr. Ken Jezek conducted radar studies in Greenland's accumulation and ablation zone.

A glacier that is near equilibrium, with its snout basically marching in place, has an ablation zone that is about 40 percent of the total area.

The ablation zone often contains meltwater features such as supraglacial lakes, englacial streams, and subglacial lakes.

Sediment entrained in glaciers often moves approximately along the glacial flowlines, causing it to appear at the surface in the ablation zone.

Typical of mountain glaciers, this icefall forms as the ice flows from a high elevation plateau or basin accumulation zone to a lower valley ablation zone.

The equilibrium line altitude (ELA) or snow line separates the ablation zone from the higher-altitude accumulation zone.

In the ablation zone, ablation measurements are made using stakes inserted vertically into the glacier either at the end of the previous melt season or the beginning of the current one.

Increased temperatures have tapped Pacific Ocean moisture, leading to snowfalls that supply the accumulation zone of the glacier with 40 percent more snowfall than is melted in the ablation zone.

At glacial times the glacier snowline (ELA) as altitude limit between glacier nourishing area and ablation zone, was lowered about 820 to 1250 altitude metres against today.

The amount of snow and ice gained in the accumulation zone and the amount of snow and ice lost in the ablation zone determine glacier mass balance.

This debris can accumulate due to ice flow toward the surface in the ablation zone, melting of surface ice or from debris that falls onto the glacier from valley sidewalls.

Shumskiy (1957) defines antarctic oases as substantial ice-free areas separated from an ice-sheet by an ablation zone, and kept free from snow by ablation due to low albedo and radiation.

The ablation zone of the Gangotri glacier is covered by a thick pile of supraglacial moraines and is characterized by several ice sections, melting into pools of supraglacial lakes.

After the removal of the mold, an iris diaphragm having an inner aperture of 5 mm was centrated over the pupil onto the upper surface of the lenticule to define the ablation zone.

The equilibrium line separates the ablation zone and the accumulation zone; it is the altitude where the amount of new snow gained by accumulation is equal to the amount of ice lost through ablation.

The control eyes were submitted to a phototherapeutic keratectomy of 5 mm diameter ablation zone (confined by the same iris diaphragm), depth of 60 μm, on deepithelised cornea without the use of any masking agent.