Glacial systems and landscapes

  • Created by: RhodesN
  • Created on: 24-06-18 11:02
how are fluvioglacial landscapes formed?
meltwater from glaciers and icesheets
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how are periglacial landscapes formed?
cold climates
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what is the most obvious input into a glacial system?
snow and (other forms of precipitation that adds to mass when they freeze)
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what is the overall gain of mass called?
accumulation
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what does rock on its surface and embedded into galcier cause?
erosion as the galcier moves along the valley floor and sides
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what is an input in the form of energy into a glacial system?
solar energy
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what is Albedo?
the amount of solar radiation refelcted back by the surface of the earth
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ice and snow have a very high...
albedo
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what are a glaciers main outputs?
melting, sublimation, and evaporation
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when does sublimation (ice to water vapour without melting) occur?
when its cold and atmospheric conditions are dry
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what is ablation?
reduction or loss
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what is a cascading system?
an output interacting with one system because input for another
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what is a closed system?
transfers energy but not matter, e.g. carbon cycle and hydrological cycle
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what is an open system?
transfers energy and matter, e.g. drainage basin
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what is dynamic equilibrium?
when outputs and inputs are balanced
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what is feedback?
when equilibrium is upset by a change in element
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what is positive feedback?
where effects of an action are amplified
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what is negative feedback?
effects of an ction are slowed down/reduced
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what does temporal mean?
change over time
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what does spatial mean?
change over space
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what happens if a glacier is retreating?
its moving back up the valley because of melting
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what happens if a galcier is advancing?
its moving down a valley
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what is a galcial budget?
balance of inputs and outputs
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Other cards in this set

Card 2

Front

how are periglacial landscapes formed?

Back

cold climates

Card 3

Front

what is the most obvious input into a glacial system?

Back

Preview of the front of card 3

Card 4

Front

what is the overall gain of mass called?

Back

Preview of the front of card 4

Card 5

Front

what does rock on its surface and embedded into galcier cause?

Back

Preview of the front of card 5
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