Students conducted physical geography fieldwork to investigate changes along a pebble beach profile from the shoreline inland. Below is a summary of the data they collected at 5-metre intervals.
| Distance from Shoreline (m) | Beach Slope Angle (°) | Mean Pebble Size (cm) |
|---|---|---|
| 0 (Water's edge) | 2 | 1.5 |
| 5 | 5 | 3.2 |
| 10 | 9 | 5.8 |
| 15 | 14 | 8.1 |
Identify two further pieces of primary physical data that the students could collect at these sites to investigate coastal processes and beach characteristics.
