sundarbans - coastal processes Flashcards
shaped by…
tidal action of interconnected channels
what are the channels flowing across
silt and mud deposits
what are Kahls?
smaller interconnected channels
what do khals do to the coast
drain the bed with powerful ebb tide
what is ebb tide?
tidal phase during which the water level is falling
what is washed away to form Chars?
non cohesive sand size material
what are chars?
banks
where do the chars form?
at the mouth of the river
the sediment from chars are blown to coast, by what?
strong south westerly wind
what does the sediment blown by wind create?
large range of dune
where is fine material deposited?
lower energy environment - behind dunes
what does the fine material build up to form?
islands
what are the islands colonised by?
halophytic plants and become dense mangrove forest
until now there has been what?
dynamic equilibrium
