Table 1: Ranges for Vulnerability Ranking of Variables on the Gulf of Mexico Coast.
| Variables | Very
Low 1 |
Low 2 |
Moderate 3 |
High 4 |
Very
High 5 |
|---|---|---|---|---|---|
| GEOMORPHOLOGY | Rocky cliffed coasts, Fjords | Medium cliffs, Indented coasts | Low cliffs, Glacial drift, Alluvial plains | Cobble Beaches, Estuary, Lagoon | Barrier beaches, Sand beaches, Salt marsh, Mud flats, Deltas, Mangrove, Coral reefs |
| SHORELINE EROSION/ACCRETION (m/yr) | > 2.0 | 1.0
- 2.0 |
-1.0
- 1.0 |
-2.0
- -1.0 |
<
-2.0 |
| COASTAL SLOPE (%) | > 1.20 | 1.20
- 0.90 |
0.90
- 0.60 |
0.60
- 0.30 |
<
0.30 |
| RELATIVE SEA-LEVEL CHANGE (mm/yr) | <
1.8 |
1.8
- 2.5 |
2.5
- 3.0 |
3.0
- 3.4 |
>
3.4 |
| MEAN WAVE HEIGHT (m) | <
0.55 |
0.55
- 0.85 |
0.85
- 1.05 |
1.05
- 1.25 |
>
1.25 |
| MEAN TIDE RANGE (m) | >
6.0 |
4.0
- 6.0 |
2.0
- 4.0 |
1.0
- 2.0 |
<
1.0 |