- Created by: Elliemaybl
- Created on: 04-02-20 16:39
Ablation - The loss of mass from the glacier, e.g. meltwater, avalanches, sublimation, evaporation.
Abrasion - Small rocks within the base of the glacier rub against the bedrock.
Accumulation - The addition of mass to the glacier, usually as snow.
Active Layer - The top layer of soil above permafrost, which thaws annually in summer.
Alpine Regions - Areas of low temperature in high altitude, mountainous regions.
Arêtes - A ridge formed between two corries.
Basal Ice Melting - The weight of a temperate glacier causes meltwater, which will then erode the
bedrock through fluvial erosion.
Basal Sliding - Glaciers sliding over bedrock, due to meltwater between the two surfaces.
Blockfields - Rock-strewn landscape caused by extensive frost action.
Cold-Based Glacier - (Also called Polar Glaciers) The glacier’s temperature remains below zero
degrees, so the base of the glacier remains frozen and moves very little.
Compressional Flow - Ice builds up and thickens due to friction as a glacier travels upwards along
a shallow gradient.
Corries - A round hollow in the side of a hill, widened from an initial smaller hollow by a glacier
within the hollow.
Crushing - The weight of the glacier causes fracturing in the bedrock.
Drumlins - When a glacier hits an obstacle that cannot be eroded, deposition from underneath the
glacier builds up behind the obstacle.
Environmental Fragility - An environment is vulnerable or at risk, with low resilience or ability to
adapt to changes.
Erratics - Boulders transported and deposited by a glacier. The type of rock that forms the erratic
will usually differ from the rock types in the surrounding landscape.
Esker - A long, winding ridge of glacial deposition.
Extensional Flow - Ice thins out, creating crevasses, due to an increase in the glacier’s velocity
down a shallow gradient.
Fluvial Erosion - Water within the glacier erodes the base of the glacier over time through:
hydraulic action, attrition, corrosion.
Frost Heave - The freezing and expansion of water beneath the ground, resulting in floor uplift.
Glacial Budget - The…