types of fluvial and aeolian erosion Flashcards
what are the types of fluvial erosion
corrasion
attrition
hydraulic action
what is corrasion (fluvial)
when rocks and pebbles hits against the rough surface, eroding it.
erodes the banks / cliff faces
what is abrasion
large sized sediments eg boulders and rocks bump against each other.
eroding and becoming finer and smaller particles
what is hydraulic action (fluvial)
where cliff face is eroded due to strong waves crashing against the coast.
the force of wave pushes air into the cracks of the cliff.
as the air is compressed, exerts pressure on the rocks, breaking up parts of it
types of fluvial transportation
saltation
suspension
solution
traction
what is saltation (fluvial)
pebbles bouncing along the bed
what is suspension (fluvial)
lighter sediment suspended within the water
what is solution (fluvial)
chemicals dissolved and transported
what is traction (fluvial)
large heavy pebbles rolled along the bed
types of aeolian erosion
deflation
corrasion
attrition
what is deflation (aeolian)
fine, dry soil particles blown away removing the top soil of fine sediment, leaving behind rock gradients that are too heavy to be lifted. forms desert pavements
what is corrasion (aeolian)
mechanical wear of material. wind transports sand and material, hitting against rock surfaces, eroding and smoothening the rock
what is attrition (aeolian)
two surfaces rubbing against each other resulting in the wearing down of one or both surfaces.
types of aeolian transportation
creep
saltation
suspension
what is creep (aeolian)
when heavy sediment is moved by the wind, pushed along the surface
