Students collected sediment data at five different locations along a shingle spit, measuring from the spit root to the distal end, to investigate how beach material and morphology change with distance. Their results are shown in Table 1.
Table 1
| Sediment and Beach characteristic | Site 1 (Spit Root) | Site 2 | Site 3 | Site 4 | Site 5 (Distal End) |
|---|---|---|---|---|---|
| Average pebble size (major axis, mm) | 54.5 | 38.2 | 24.0 | 11.5 | 3.2 |
| Average roundness score (1 = very angular, 6 = well-rounded) | 1.6 | 2.8 | 3.9 | 4.8 | 5.5 |
| Beach face gradient (degrees) | 11.5 | 8.0 | 5.5 | 3.2 | 1.2 |
Explain one conclusion that could be drawn from the data in Table 1.
