The Mechanism of the 20°C Isotherm Depth Oscillations for the Bay of Bengal
The monthly variation of thermocline depth in terms of 20°C isotherm depth (Z20) in the Bay of Bengal has been studied using SODA and ARGO datasets. During a southwest monsoon, the Bay of Bengal is deepest in the western basin and shallowest in the eastern basin while it is the opposite during northeast monsoon. The Z20 oscillation is not only affected by semiannual reversing wind forcing but also influenced by coastal Kelvin waves from the eastern coast and remote effect from the Northern Indian Ocean and Malacca Strait. A linear relationship between SSHA and Z20 has been found from both SODA and observational studies.
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Document Type: Research Article
Affiliations: Centre for Oceans, Rivers, Atmosphere and Land Sciences (CORAL),Indian Institute of Technology, Kharagpur, India
Publication date: July 1, 2012