Sentences with phrase «ablation rate»

Local climate in the North Cascades influences mean snowpack depth and ablation rate, but does not cause significantly different responses to annual climate conditions within specific elevation bands.

The 40 day melt season indicates a 2.4 cm / day ablation rate (0.9 inches / day).

The amount of runoff provided by a glacier is the product of its surface area and ablation rate.

This provides the ablation rate.

Early season ablation rate varies widely with elevation, but after June 1 ablation rates fall within a narrow range.

There is a threshold of glacier extent reduction dependent on the magnitude of ablation rate increase, where glacier runoff declines, the few examples suggest this is in the 10 - 20 % areal extent loss.

Revisiting each site through the ablation season and measuring the emergence of each stake identifies the ablation rate.

Once melting comes into the picture, ablation rate becomes much more sensitive to air temperature.

Still, there is no question that increased dust on snow increases ablation (mass loss)(though if the dust / dirt cover becomes thick enough, it actually winds up lowering ablation rates through insulation).

In the paper the authors argue that there is no evidence for a speed up of the ice marginal zone due to enhanced ablation rates, which by some people was explained as if Greenland was not contributing to sea level change any more.

By mid-summer ablation rates do not vary substantially within the 1600 m - 2400 m elevation band, which is the primary elevation zone for glaciers.

Ablation rates in May at the start of the melt season are widely variable from site to site, but fit within specific mean ranges based on elevation.

Accumulation is widely variable and can only be estimated if baseline data is available, ablation rates are similar in the summer season and can be extrapolated from primary to secondary sites without substantial baseline data.

Comparison of ablation rates and onsite temperature records in the case of the South Cascade Glacier, Easton Glacier, Ice Worm Glacier and Columbia Glacier yield a relationship between air temperature and daily ablation for snow and ice in SWE (Figure 1).

May ablation rates between Snotel sites are poorly correlated as are the daily ablation rates, correlation coefficients ranging from 0.43 - 0.76.

Cross correlation of May monthly ablation rates between Snotel sites as a result is poor, as are the daily ablation rates, correlation coefficients ranging from 0.43 - 0.76.

Ablation measurement on nine North Cascade glaciers for twenty - nine discrete two to six week periods during this part of the ablation season yield mean ablation rates of 0.036 m / day, 0.038 m / day and 0.028 m / day for July, August and September respectively.

Ablation The onset of ablation is also seen in the spring ablation rates at the Snotel sites (Table 3).

Ablation rates after June 1 are highly correlated ranging from 0.73 - 0.92.

Ablation rates and consequent runoff can be assessed from a few primary sites at glaciated levels from June 1 - September 31.

The distribution of seasonal accumulation and ablation rates are measured in - situ.

Not exact matches

«If the ablation is limited to the pulmonary vein alone, the success rate goes down — almost to the level of the Amiodarone treatment,» Di Biase said.

In addition to having a higher rate of freedom from atrial fibrillation, participants who underwent catheter ablation also had lower rates of hospitalization and mortality during the two - year follow up.

Marrouche and Johannes Brachmann from the Klinikum Coburg conducted the eight - year CASTLE - AF clinical trial to compare catheter ablation to conventional drug therapies recommended by the American Heart Association and European Heart Society to control the heart's rate.

Among patients with untreated paroxysmal (intermittent) atrial fibrillation (AF), treatment with electrical energy (radiofrequency ablation) resulted in a lower rate of abnormal atrial rhythms and episodes of AF, according to a study in the February 19 issue of JAMA.

This is their sensitivity Achilles Heel: relatively little increases in melt can expand the ablation zone appreciably given the low surface slopes and low accumulation rates.

They continue at a rate set by the wind and the moisture gradient, and rob the glacier of energy that would cause more ablation if used for melting.

The surface mass balance observations similarly indicate that the ELA has migrated upwards at a rate of 44 m / a over the 1997 — 2011 period in West Greenland, resulting in a more than doubling of the ablation zone width during this period...»