1
Q
What are the properties of constructive waves?
A
- low height
- large wavelength
- 6-8 waves per minute
2
Q
What are the properties of destructive waves?
A
- tall
- short wavelength
- 13-15 per minute
3
Q
What is the gradient of sand beaches usually?
A
- Large
- due to lack of percolation
- means that backwash is stronger
- more material removed
4
Q
What is the gradient of shingle beaches usually?
A
- Shallow
- water percolates through rocks
- backwash is weaker
- less material taken away
5
Q
How is sediment distributed along a beach?
A
- Larger material at back
- Smaller at front
- Coarser at back
- Finer at front
Pattern is translated further down (forward) the beach if destructive dominated
6
Q
How does the placement of the ridge vary between constructive and deconstructive waves?
A
- ridge is further up beach for constructive waves
- ridge is further offshore for destructive waves
7
Q
What are swell waves?
A
- Waves observed during a windless period
- remnants of previous waves
8
Q
How do waves vary over a day?
A
- plunging waves may become swell waves
- tides change
9
Q
How do waves vary over seasons?
A
- Summer is dominated by constructive
- Winter by destructive
8GE01 - Coasts
flashcards
Decks in class (33)
# Cards
-
1.18
-
1.29
-
1.3(Spec2) - Cork5
-
1.4(Spec2) - Concordant Morphology9
-
1.54
-
1.6(Spec2) - Submergent Coastlines + Sognefjorden11
-
1.72
-
2.113
-
2.218
-
2.39
-
2.44
-
2.511
-
2.6(Spec1)7
-
2.72
-
2.8(Spec2) - Mass Movement + Barton18
-
2.95
-
2.10 - W Africa8
-
2.113
-
2.129
-
2.13 - Trinidad And Tobago16
-
3.2 - Sediment Cells13
-
3.3(Spec2) - Deposition + Distinctive Landforms16
-
3.46
-
3.514
-
3.6 - New York11
-
3.7 - Bangladesh13
-
3.8 - Kiribati8
-
3.9 - Netherlands17
-
4.1(Spec2) - Portballintrae + Lyme Regis25
-
4.6 - Chittagong7
-
4.37
-
4.5 - Slapton Management13
-
4.4 - ICZM7
