Table 2 Physical parameter rating.
From: Vulnerability assessment of English and Welsh coastal areas
No | Physical parameter with symbol | Extremely low (1) | Low (2) | Moderate (3) | High (4) |
|---|---|---|---|---|---|
1 | Beach width (a) | > 150 m | 100–150 m | 50–100 m | < 50 m |
2 | Dune width (b) | > 150 m | 50–100 m | 25–50 m | < 25 m |
3 | Coastal slope (c) | > 12% | 12–8% | 8–4% | < 4% |
4 | Distance to built structures behind the back beach (d) | > 600 m | 600–200 | 200–100 m | < 100 m |
5 | Distance of vegetation behind the back beach (e) | > 600 m | 600–200 | 200–100 m | < 100 m |
6 | Sea defence (f) | > 50% | 20–50% | 10–20% | < 10% |
