Ecology, Environment and Conservation Paper

Vol 21, Issue 1, 2015; Page No.(9-14)

SIMULATION OF TURBULENCE IN NORTHERN PART OF THE PERSIAN GULF IN VICINITY OF THERMOCLINE

Seyed Majid Mosaddad and Mohsen Ganj and Elham Parsaeemehr

Abstract

In the present study, authors present evidence of a clear coupling between thermocline and turbulence in northern part of the Persian Gulf (PG). A mechanism for generating the turbulence observed on the thermocline sheets is established by running a turbulence closure through the POM (Princeton Ocean Model). Turbulence kinetic energy increasing will be resulted from winter to summer due to thermo cline development in northern part of the PG. That is, the static stability of the sheet is sufficient to restrain any instability due to the shear across it at that instant. As we know, thermo cline is the place of strong stratification and so internal waves exist there. These waves propagate through thermo cline layer formed underwater due to density gradients. This paper studies these phenomena in the PG with the data collected in 1992 on the basis of Mt. Mitchell cruise during 100 days during 100 continuous days from Feb. till Jul. 1992 and running the turbulence closure through POM (Princeton Ocean Model). In fact, turbulence can be produced by factors like climatologically, water exchange and bottom stress and so could propagate through thermo cline. This paper, present results from model running (POM) that show evidence of coupling between the turbulent velocity fields and the thermo cline. It also shows evidence of relation between bottom stress and the turbulent fields.

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