Glossary of Fluvial Processes

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comes from the latin word fluvis which means river
running water dominates
3/4 of land area
water moves
much slower than wind but moves far more materials
water moving as sheet flow can
move material
ephermal streams and rivers
rivers and streams in arid environments that periodically dry up
as streams change
they cause flood plains and river valleys
flood plains are
flat areas adjacent to rivers or streams thats periodically hold water
relatively resistant rocks on one or both sides of a flood plain produce
natural leeves
are somewhat elevated areas of land on either side of a channel
when water leaves their banks
it is exposed to a significant amount of friction
friction on the banks slows
overflowing water and forces the heaviest sediments (like sand and course silt)
the leeves are made up of
sands and course silts
back swamps are
low lying portions of the flood plain lying between the natural leeve and the edge of the flood plain
river terrance
is an abandoned flood plain located above the present stream (includes the present flood plain)
Changing climate or tetonic uplift may cause
down cutting bellow the existing flood plain, and enough time passes a new flood plain is created bellow the original one
waterfalls and rapids
are portions of channels with steep gradients
are deposits of alluvium, formed when streams enter standing water
Alluvial fans
are usually found in dry mountanous emvironments
-much like deltas
are extensive areas of flat land places of higher elevation
have steep sides appear to be somewhat smaller than plateaus surrounded by lower lying plains
are even smaller, flat topped elevated places with steep sides

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