Mathematics – Analysis of PDEs
Scientific paper
2010-06-30
Mathematical Models and Methods in Applied Sciences 8, 13 (2003) 1157-1184
Mathematics
Analysis of PDEs
Scientific paper
This paper introduces a one-dimensional NPZD-model developed to simulate biological activity in a turbulent ocean water column. The model consists of a system of coupled semilinear parabolic equations. An initial-boundary value problem is formulated and the existence of a unique positive weak solution to it is proved. The existence result is derived using a variational formulation, an approximate model and a fixed-point method. It is shown that the qualitative analysis performed still applies if different parameterizations of several biological processes found in the biogeochemical modeling literature are used.
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