SedimentsurfaceMain flow direction
xy
z
Measuringpoint
Flux contribution
x
Footprint definition: smallest area that contributes with 90%of the flux
Footprint prediction – 3D modeling
Source: Peter Berg
Footprint prediction – 3D modeling
xy
z
Measuringpoint
Main flow direction
Modeling turbulent transport and dispersion of a tracer released from different locations on sediment surface
Source: Peter Berg
Footprint prediction – 3D modeling
0 1000 2000 3000 4000 5000 6000 7000 8000150
100
50
0
-50
-100
-150
y (
cm
)
x (cm)
Relatively smooth sediment surface (z0 = 0.1 cm)
Measuring height over sediment surface: h = 30 cm
90%
10%
Source: Peter Berg
Footprint prediction – 3D modeling
0 1000 2000 3000 4000 5000 6000 7000 8000150
100
50
0
-50
-100
-150
y (
cm
)
x (cm)
30 cm20 cm10 cm
15 cm5 cm
25 cm
)(zhhh++L 02 log12180.171.77277 Length of footprint:
Source: Peter Berg