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Coastal Environments
Spring Tides Neap Tides
The Sun and moon are aligned with the Earth The Sun and moon form right angles with the Earth
There's an increase in gravitational attraction The Sun's attraction partly counterbalances that of
Creates a higher high tide and a lower low ride, the moon
increasing the tidal range Creates a lower high tide and a higher low tide,
decreasing the tidal range
Sediment Sources and Cells:
Coastal sediment comes from a variety of sources , including the sea bed,…read more

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Coastal Environments
Storm Surges:…read more

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Coastal Environments
Coastal Processes
Marine Processes ­ processes operating upon a coastline that are connected with the sea, such as waves, tides and
longshore drift
Subaerial Processes ­ processes operating on the land but affecting the shape of the coastline, such as
weathering, mass movement and runoff
Marine Erosion
Hydraulic Action Abrasion/Corrasion Attrition Solution/Corrosion
Air is trapped as a The material the sea has The material in the sea Certain materials, such as
breaking wave hits a cliff pick up is hurled against knock against…read more

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Coastal Environments
Transportation and Deposition:
Type of Transportation Description
Traction Large stones and boulders are rolled along the river bed. Usually at high discharge
and high energy levels
Saltation Small stones are lifted up by the current and are bounced along the river bed . Usually
at high energy levels
Suspension Small particles (sand and silt) are suspended and carried along in the flow of the river
Solution Dissolved materials are carried and transported within the moving water
Landbased Subaerial Weathering:
Biological Chemical Mechanical
1.…read more

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Coastal Environments
Runoff is when large quantities of load is removed at times of flood by water. It may take the form of a stream
emerging from the bay, or it may be a stream cascading over a cliff excavating a Vshaped groove. The presence
off water will also assist mass movement processes.…read more

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Coastal Environments…read more

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Coastal Environments
Landforms of Deposition…read more

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Coastal Environments…read more

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Coastal Environments…read more

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