The grinding away of bedrock by fragments of rock which may be incorporated in ice. Also known as corrosion.
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Anoxic
Without oxygen.
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Boulder Clay
The unsorted sediment deposited directly below a glacier, which has a range of particle sizes from fine clay to rock fragments and boulders.
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Coastal squeeze
a) Where coastal sediment is prevented from expanding. b) An environmental situation where the coastal margin is squeezed between the fixed landward boundary and the rising sea level.
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Coastalisation
The movement of people to coastal areas.
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Corrosion
The breaking down of something slowly by chemical action.
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Cost-benefit analysis
A technique where projected public schemes are evaluated in terms of social outcomes as well as in terms of profit and loss.
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Eustatic change
A worldwide change of sea level which may be caused by the growth and decay of ice sheet.
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Eutrophication
The process by which ecosystems become more fertile environments as detergents, sewage and artificial fertilisers flow in.
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Fetch
The distance that a sea wave has travelled formats beginning to the coast where it breaks.
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Freeze-thaw
The weathering of rocks which occurs when water which has penetrated joints and cracks freezes and expands.
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Hydraulic action
The force of the water within a stream or river.
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Isostatic changes
The rise or fall of the Earth's continental crust in response to the melting or accumulation of glacial ice.
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Longshore drift
The movement of sand and shingle along the coast.
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Relief
The shape of the Earth's surface. High relief is steep land and low relief is more sloped.
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Salt marsh
The mud flats in estuaries and sheltered bays on which vegetation has grown.
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Slumping
A mass movement where rock and soil move downwards along a concave face.
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Swell
A long series of ocean waves, generally produced by wind, and lasting after the wind has ceased.
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Topography
The physical features of an area of land, especially the position of its rivers and mountains.
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Other cards in this set
Card 2
Front
Without oxygen.
Back
Anoxic
Card 3
Front
The unsorted sediment deposited directly below a glacier, which has a range of particle sizes from fine clay to rock fragments and boulders.
Back
Card 4
Front
a) Where coastal sediment is prevented from expanding. b) An environmental situation where the coastal margin is squeezed between the fixed landward boundary and the rising sea level.
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