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Plankton Dynamics On The Outer Southeastern U.S. Continental Shelf. Part I: Lagrangian Particle Tracing Experiments, Joji Ishizaka, Eileen E. Hofmann
Plankton Dynamics On The Outer Southeastern U.S. Continental Shelf. Part I: Lagrangian Particle Tracing Experiments, Joji Ishizaka, Eileen E. Hofmann
Journal of Marine Research
The residence time and flow patterns of plankton populations on the outer southeastern U.S. continental shelf were studied with Lagrangian particle tracing experiments. Flow and temperature fields used for these experiments were constructed by applying optimal interpolation methods to current meter data obtained during the Georgia Bight Experiment I and II which took place 25 February to 18 June 1980 and 10 June to 24 September 1981, respectively. The interpolated fields reproduced the flow and temperature structures associated with Gulf Stream frontal eddies and bottom intrusions, which are the upwelling mechanisms of interest in this region. The general particle tracing …
Plankton Dynamics On The Outer Southeastern U.S. Continental Shelf. Part Ii: A Time-Dependent Biological Model, Eileen E. Hofmann, Julie W. Ambler
Plankton Dynamics On The Outer Southeastern U.S. Continental Shelf. Part Ii: A Time-Dependent Biological Model, Eileen E. Hofmann, Julie W. Ambler
Journal of Marine Research
A system of ten coupled ordinary differential equations was developed to investigate the time-dependent behavior of phytoplankton and copepod populations associated with frontal eddy and bottom intrusion upwelling features on the outer southeastern U.S. continental shelf. Model equations describe the interactions of nitrate, ammonium, two phytoplankton size fractions (>10 μm and <10 μm), five copepod categories that represent the developmental stages of a population, and a detrital pool. Formulations for the biological processes are based primarily upon data obtained from laboratory and field experiments for southeastern U.S. continental shelf plankton populations. Time series of nutrient and plankton distributions …
Plankton Dynamics On The Outer Southeastern U.S. Continental Shelf. Part Iii: A Coupled Physical-Biological Model, Eileen E. Hofmann
Plankton Dynamics On The Outer Southeastern U.S. Continental Shelf. Part Iii: A Coupled Physical-Biological Model, Eileen E. Hofmann
Journal of Marine Research
Gulf Stream frontal eddies and bottom intrusions provide an almost continuous input of nutrients to the waters of the outer southeastern U.S. continental shelf. However, the two types of upwelling differ in physical dynamics, frequency of occurrence and duration. To investigate the effect of these differences on biological production associated with the two upwellings, a ten-component biological model was coupled to circulation and temperature fields constructed from an optimal interpolation of current meter data obtained from moorings deployed on the mid- to outer southeastern U.S. continental shelf as part of GABEX I (February to June, 1980) and GABEX II (June …