Beach Profile
Beach
Procedure for measurements of beach profile
Lay tape measure on beach to create a transect/ perpendicular to beach
Poles put at break of slope
Measure distance between poles at breaks of slope
Poles must be vertical
Read angle from lower pole (nearer to sea) to upper pole (further from sea)
Student holds clinometer at top / at same marked height on ranging pole and look along string or rope
Read / measure and record angle
Move poles up beach along profile to next site/break of slope
Uses of each equipment in beach profile measurements
Tape measure: lay it out along transect line
Measure distance between ranging poles/put poles at equal distance
Ranging poles: poles at either end of measured distance
Ensure they are vertical
Rest on surface/equal depth into sand
Clinometer: student holds clinometer next to top/at agreed height on ranging pole
Sight other ranging pole at top/agreed height/same height
Allow clinometer to adjust to angle
Read angle/measure angle/measure slope
Clinometer recording sheet
| Sites | Angle (degrees) | Distance between people ( m ) |
| 1 | 1.5 | 4.5 |
| 2 | 42 | 8.9 |
| 3 | ||
| 4 | ||
| 5 |
Qn.
1. The average depth of river z was 7m and the width was 9m. Find the cross section area of the river.
2. The depth of river Bamba at different sites was 5m, 8m and 6m while width was 12m. Find the cross section area of river Bamba.
3. The cross area of river y was 36m find the width if the average depth was 4 m
Cont.
QN. 2 Pg. 90
