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Fluctuations of Temperature and Thermal Energy in the Place of Double Diffusion Structures in the Strait of Hormuz

Document Type : Original Article

Authors
Mostafa Solgi 1
Mahdi Mohammad-Mahdizadeh 2
Abbas Ali Ali Akbari Bidokhti 3
Smaeyl Hassanzadeh 4
1 PhD student, Department of Space Physics, Institute of Geophysics, Tehran University, Tehran, Iran and PhD student, Department of Non-Biological Atmospheric and Ocean Sciences, Hormozgan University, Bandar Abbas, Iran.
2 Associate Professor, Department of Non-Biological Atmospheric and Ocean Sciences, Faculty of Marine Science and Technologies, University of Hormozgan, Bandar Abbas, Iran
3 Professor, Department of Space Physics, Institute of Geophysics, University of Tehran, Iran
4 Professor, Faculty of Physics, University of Isfahan, Isfahan, Iran
10.30467/nivar.2023.389044.1239
Abstract
Double Diffusion Convection (DD) structures, in two types of Salt-Fingering (SF) and Diffusive Convection (DC), occur due to vertical temperature and salinity gradients with different diffusion coefficients. And thermohaline circulation in the Strait of Hormuz often causes the formation of SF on the surface and in the northern or middle parts of the strait and DC structure in the depth and southern parts of the Strait of Hormuz. In this study, the formation of DD structures and their role in temperature changes and thermal energy of water in the Strait of Hormuz have been investigated. This effect depends on the formation conditions of diffusion structures and the average temperature and thermal energy of the water mass. Due to the fluctuations resulting from the DD structures in the hot days of the year, a 2-5% change in the temperature and thermal energy of water is observed. So that the maximum changes up to 5% (change in energy) occur in the southern parts of the strait. The heat exchange during the DC process is higher than that of SF (more than 10 times). However, the thermal energy is minimal at the place of the cold mass and strong convection, and the DC structure is weakened due to the increased energy exchange with the environment,. This heat exchange causes the internal energy of water to decrease by about 250 J. While during the growth of SF, the temperature and thermal energy of the environment (on a small scale) increases.
Keywords
Double Diffusion
Salt-Fingering
DiffusiveConvection
Strait of Hormuz
Temperature
Thermal Energy
Subjects
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Nivar
Volume 46, 118-119 - Serial Number 118
September 2022
Pages 113-129

  • Receive Date 05 February 2023
  • Revise Date 26 February 2023
  • Accept Date 13 March 2023
  • Publish Date 23 September 2022