The assumptions of our model
- Spatial substrate
- Our model treats a thin strip of salt marsh,
a vertical section along a line from the
dump to the bay.
- This is understood to be
three meters high, 300 meters long, and
one meter wide.
- All of the control parameters are understood
to be relative to this narrow strip.
- The state variables are concentrations
of a single COC, spatially distributed over
the planar section of the face of the strip.
That is, we assume a uniform concentration
across the one meter thickness of the strip
of sediment and root system.
- For purposes
of simulation, this strip is divided into
discrete computational cells, like mud
bricks, one meter square by 6 inches high.
- In this planar system, we simulate diffusion
proportional to the concentration gradient,
and reaction according to Monod dynamics.
Revised by Ralph Abraham 16 August 1998