Landforms Flashcards
What is longshore drift
waves approach beach at a 90 angle due to prevailing winds.
swash carriers some material up beach
backwash carries material directly down the beach
What are rip currents
strong currents moving away from the shoreline
Spit formation
longshore drift deposits sand and shingle across a river mouth, leaving a bank of sand and shingle sitcking out to sea
compound spit
changes in dominant wind and wave direction lead to a curved end
Bar
a bar is formed where a spit grows the whole way across a bay
behind bar is a lagoon
overtime filled with silt and may gradually form a salt marsh
Mudflats
found on edges of submerged marine zone
exposed to low tide- water left theiur in permanent channels
Eustatic change
sea level change caused by a change in volume of water in the sea
isostatic change
caused by vertical movements of the land relative to the sea
Submergent coastlines
submerged by the sea due to rise in sea level
emergent
exposed to sea due to fall in se levels
What is the integrated coastal zone management
considers all elemts of the coastal system
considers tourism, fishing, tourism
tr
tropical storm
form between 5- 30
27
warm moist air rises quickly- creating strong winds