Mark Bakker |
Mark Bakker
Associate
Research Scientist
Biological and Agricultural Engineering Department, UGA, Athens, GA
Dr. Bakker has returned to The Netherlands. This biography reflects his former affiliation and his research presented on this website.
Expertise:
Development and application of groundwater models and other hydrology models
Issues of Interest:
Seawater intrusion in coastal aquifers, contaminant transport in multi-aquifer
systems, exact solutions to simplified problems, the modeling of flow and transport in
layered anisotropic aquifers, three-dimensional flow to radial collector wells,
flow through the unsaturated zone, and many other groundwater and hydrology
problems.
Current Projects:
We are
developing a new package for MODFLOW to model seawater intrusion in coastal
aquifers. The package is based on a new formulation for variable density flow.
The density may vary continuously throughout the model area. The density (salinity)
distribution will be specified through the specification of the elevation of
a number of surfaces of constant density. The density will vary linearly in
the vertical direction between these surfaces. Such a distribution closely resembles
current practice of the evaluation of the salinity in the aquifer, where drawing
contour surfaces of equal salinity is one of the most efficient ways to evaluate
the salinity distribution.
The main advantages of the new formulation are: (1) The aquifer does not have
to be discretized vertically, only the initial density distribution in each
aquifer has to be specified, (2) The simulation of seawater intrusion is efficient
and accurate since no velocities have to be computed, and (3) The model does
not suffer from numerical dispersion, nor do all cell sizes have to be equal.
Project Links:
An
Efficient Computer Program for Modeling Seawater Intrusion in Coastal Aquifers
Mark
Bakker (Dept of Biological and Agricultural Engineering, Univ of Georgia)
Location:
Coastal
aquifers