Data Catalog | Emodnet Biology

Data Catalog

[ report an error in this record ]basket (0): add | show Print this page

A system identification view on two aquatic topics: phytoplankton dynamics and water mass mixing
de Brauwere, A. (2007). A system identification view on two aquatic topics: phytoplankton dynamics and water mass mixing. PhD Thesis. Vrije Universiteit Brussel. Faculty of Science. Analytical and Environmental Chemistry: Brussel. 224 pp.

Thesis info:

Available in  Author 
Document type: Dissertation

    Aquatic communities > Plankton > Phytoplankton
    Mixing processes
    Physics > Mechanics > Dynamics
    System analysis
    Water masses

Author  Top 
  • de Brauwere, A., more

    The general aim of this study is to modify or improve existing modelling procedures in order to extract more or more reliable information from observations at hand. In practice, this means that much attention is directed to quantifying uncertainties, since these enable to draw a line between what is significant and what should not be interpreted. Two applications were considered: tracer experiments modelled by compartmental models (Part A) and a multivariate water mass mixing model (Part B). However, the focus lies on the methods used and developed to improve the models and their inferences. Indeed, the merit of this work is not to have enabled the estimation of flux rates and mixing fractions, but to have enabled their accurate estimation, together with an estimate of the associated uncertainty. Very briefly, these are the main achievements: (i) Inclusion of the input uncertainties in the estimation of model parameters and their uncertainties.(ii) Model selection method based on the statistical interpretation of the residual Weighted Least Squares cost function.(iii) Improvement of Optimum Multiparameter analysis for large-scale reconstruction of mixing water mass distributions.(iv) Construction of an algorithm to estimate heteroscedastic noise variances, from residuals but corrected for model errors.(v) Verification of identifiability of given experiment-model combinations.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Author 


Website hosted and developed by VLIZ