800477
| Frage | Antworten |
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Image:
prevailing_winds (image/png)
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PREVAILING WINDS & MAXIMUM FETCH- show direction material is carried along coast by longshore drift |
| CHANGE IN DIRECTION- direction of coastline changes e.g. headland | |
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storms (image/jpg)
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STORMS- at point where coast changes, storms build up more material above the high-water mark |
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permanence (image/jpg)
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PERMANENCE- this gives a greater degree of permanence to the structure |
| FINER MATERIAL- carried further along the feature extending into deeper water | |
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Image:
refraction (image/jpg)
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WAVE REFRACTION- spit begins to curve round increasingly due to wave refraction, carrying water into more sheltered water |
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Image:
recurved_ends (image/jpg)
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RECURVED ENDS- contributed to by second most dominant wind direction & fetch, pushing spit material back towards the mainland (several may develop as winds vary) |
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Image:
deeper_water (image/jpg)
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DEEPER WATER- in the middle of an estuary means the spit can't extend all the way across (also stopped by current) |
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Image:
sand_dunes (image/jpg)
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SAND DUNES- form where dried out sand blown to back of spit |
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Image:
salt_marsh (image/jpg)
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SALT MARSH- form as low-energy gentle waves enter the area behind the spit |
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Image:
bar (image/jpg)
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BAR= spit joined at both sides if over a bay, a lagoon forms behind |
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Image:
tombolo (image/jpg)
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TOMBOLO= a spit joining to an island |
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