sediment sources

Question 1

what are the 6 sediment sources?

Answer 1

rivers
glaciers
wind
cliff erosion
offshore
long shore drift

Question 2

where is most of the sediment in the coastal zone from?

Answer 2

input from the rivers

Question 3

what is an estuary? why are estuaries important?

Answer 3

estuary is brackish areas where the rivers flow into the sea

estuaries are important wildlife habitats

Question 4

when does most of the cliff erosion happen during the year?

Answer 4

winter time
more frequent storms

Question 5

give an example of a coastal energy source

Answer 5

wind

Question 6

what is the name of the process when ice breaks off the glacier? why is this important for places where glaciers are found?

Answer 6

glacial calving

important for places where glaciers are found since they flow directly into the ocean and deposit sediment that was stored in the ice

Question 7

when is sediment transferred to the coastal system?

Answer 7

when waves, tides and currents erode
offshore sediment sinks such as offshore bars. sediment is transported onto the beach helping build it up

Question 8

what is longshore drift?

Answer 8

Sediment is moved along the beach, due to prevailing winds which alter the direction of the waves. Allowing sediment to be transported from one section of coastline to another. The
swash approaches the coast at an angle due to the prevailing winds, transferring sediment along the beach. The backwash pulls the sediment directly back down the
beach. The process repeats.