100
100
X Direction
1994
1994
X Direction
0
0
100
100
Y Direction
Y Direction
200
200
100
100
Composite Vector
0
0
100
100
Composite Vector
200
200
6
6
Ultrasonic
Data
5
4
4
2
2
5 Oct
7 Oct
9 Oct
5 Oct
7 Oct
9 Oct
a. Spring Gully.
b. Bread Truck Gully.
100
1994
0
100
X Direction
Y Direction
200
100
0
100
Composite Vector
200
6
5
4
2
5 Oct
7 Oct
9 Oct
c. Parachute Gully.
Figure 59. Current velocity measurements for tidal inundation and ebb during the period 59 October. Flow
velocity is in the x and y directions; the composite velocity vector and floodebb elevations are shown.
200
200
Spring Gully
Spring Gully
Bread Truck
Bread Truck
Parachute
Parachute
100
100
0
0
4
5
6
4
5
6
Maximum Water Elevation (m)
Maximum Water Elevation (m)
a. During flood.
b. During ebb.
Figure 60. Comparison of peak velocities at the Spring, Bread Truck and Parachute gullies. Note the variability
from site to site, which may be related to the area drained by each gully.
48
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