Slow (creep), Fast (flows, slides, slumps), Very Fast (avalanche,free fall)
1 of 11
mass movement occurs due to
climate (rain increases rock weight), Rock Type (soft rocks flow and slide more), Relief (steep slopes = more movement), Rate of Weathering (high due to rock exposure), aspect (direction of rain), Rate of erosion, Human Activity (adds weight)
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Types of Marine Transportation
floatation (floating on the surface), Traction (rolling), Saltation (bouncing along seabed), Solution (dissolved), Suspension (floating within water)
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Types of Marine Deposition
bed load (hard textured and dropped first), suspension (silt and sand), solution (rarely dropped unless mixed with salt)
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What determines the beach size, shape and gradient
material type, wave types, tides (often adds steps to beach), storms (erode or deposits) human activity.
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physical reasons for coastal protection
climate (global warming = rising sealevels), relief (low lying areas at risk), aspect (open to large wave fetch), depth of water (deeper = more erosive waves), loss of vegetation - Sri Lanka, rare and fragile ecosystems, weak rocks (prone to erosion)
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human reasons for coastal protection
settlements, raw materials, industrial sites, transportation, ports and docks, jobs at risk - fishing, tourism and recreation, cultural and historical sites
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methods of protection; hard engineering - isle of wight
methods of protection; managed retreat - abbotts hall farm, essex
land allowed to flood to form salt marshes = absorbs wave energy. cheap and natural.
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Other cards in this set
Card 2
Front
climate (rain increases rock weight), Rock Type (soft rocks flow and slide more), Relief (steep slopes = more movement), Rate of Weathering (high due to rock exposure), aspect (direction of rain), Rate of erosion, Human Activity (adds weight)
Back
mass movement occurs due to
Card 3
Front
floatation (floating on the surface), Traction (rolling), Saltation (bouncing along seabed), Solution (dissolved), Suspension (floating within water)
Back
Card 4
Front
bed load (hard textured and dropped first), suspension (silt and sand), solution (rarely dropped unless mixed with salt)
Back
Card 5
Front
material type, wave types, tides (often adds steps to beach), storms (erode or deposits) human activity.
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