Not exact matches
Revisiting each site through the
ablation season and measuring the emergence
of each
stake identifies the
ablation rate.
Ablation is measured by emplacing
stakes in the glacier at the end
of the previous melt season or the beginning
of the melt season.
An
ablation triangle consists
of three
stakes driven or drilled into the ice at 3 m spacing forming an equilateral triangle.
Ablation measurements were made at a minimum
of six
stakes on each glacier.
Measurements are made in late July and early August on Columbia Glacier, recording the
ablation during the first three months
of the
ablation season, for water resource assessment purposes and redrilling
of the
stakes when necessary.
Ablation stakes made
of plywood strips 10 - cm wide and marked with alternating black and white 10 - cm squares are planted in the ice near the buoy to indicate visually the amount
of surface melting as the summer proceeds.
Measurements are made in late July and early August, recording the
ablation during the first three months
of the
ablation season, for water resource assessment purposes and redrilling
of the
stakes when necessary.
Ablation stakes are used to measure the amount
of firn and ice lost beneath the previous winter's snowpack.
Ablation measurements are made at a minimum
of six
stakes on each glacier 20 - 50 points km2.