Geography Fluvioglacial landforms Flashcards
What is Névé
Granular snow consisting of low density ice crystals
What is Sublimation
The transition of ice to water vapor without the liquid stage
What is Accumulation
The addition of snow or ice in a glacier
What is Ablation
The natural removal of snow or ice from a glacier
What is Accumulation Zone
The area of net gain in a glacier
The net area of loss in a glacier
Ablation Zone
The height of land in relation to sea level
Altitude
The distance North or South of the equator
Latitude
Areas of permanently frozen ground
Permafrost
What is Soil
Any loose material at the surface of the Earth capable of supporting life
What are Crevasses
deep fissure or fracture in the glacier
What is Basal Sliding
Large scale movement of ice as a result of subglacial meltwater
What is the Pressure Melting Point
The temperature at which ice under pressure melts (can be below freezing)
What are Seracs
Streep faults in the surface of the glacier
What is Extensional Flow
Ice moving faster at the front resulting in crevasses
What is Compressional Flow
Ice moving slower at the front resulting in a build up of ice
What are Glaciomarine Sediments
Matter deposited in a marine setting by a combination of glacier and marine related processes
What is Nivation
The erosion of the ground and sides of a hollow as a result of continued freeze-thaw
Define Abrasion
Rubbing together of rocks
The erosion of the ground and sides of a hollow as a result of continued freeze-thaw
Bergschrund
Rocks and sediments carried and then deposited by a glacier it forms a
Moraine
On the surface of a glacier
Supraglacial
Inside the glacier
Englacial
Underneath the glacier
Subglacial
