alexa Mathematical Model Of Time Dependent Of Persian Gulf Circulation | 9500
ISSN: 2155-9910

Journal of Marine Science: Research & Development
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International Conference on Oceanography & Natural Disasters

Maryam Mohammadi
Accepted Abstracts: J Marine Sci Res Dev
DOI: 10.4172/2155-9910.S1.004
Abstract
Time dependent ocean circulation is studied in a simple half-bounded-ocean (Persian Gulf).The model solves the vorticity equation which includes pressure gradient force, corilis force,friction force and component of unsteady wind stress. The ocean model used is for a uniform incompressible and homogeneous sheet of semi-confined fluid. Both the linear response and the steady non-linear circulation are considered. First the free oscillations (normal modes) are considered and results show that each normal mode includes a travelling wave (with phase speed always toward the west),and circulations are cells of vertical motion. The resulting cell move westward, alternatively increasing and decreasing in size. The equation is solved with the effect of forcing function which consists of a travelling wave passing over the ocean in three cases. Case one, when forcing frequency lies within the range of the characteristic frequencies of the ocean basin. In case two, the forcing frequency is much larger than the frequency of normal mode. Case three, when forcing frequency is smaller than the normal mode frequency, linear response is an oscillating boundary layer in the coastal boundaries and in another boundaries it is a travelling wave moving in the direction of forcing wave. Non-linear response consists of two cells. Thus the symmetry, structure, sense, and strength of circulations are strongly frequency dependent. Although, the results seem to be consistent with the observation, but one requires to use a more realistic model such as the numerical ones including possibly the baroclinicity. (e.g. a two- layer).
Biography
Maryam Mohammadi born in 1972 in Tehran, having graduated from teacher training university in physics (GPA 17.02) in bachelor degree and from Islamic Azad university of Tehran (GPA 18.15) in master degree. In 2008, she went to India to continue her studies in physical oceanography in Pune University of India employee of education. Right now she is the assistant professor In Islamic Azad University. She participated in earthquake maneuver as instructor,2011. She Presented and publishing 19 papers in various journals.
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