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West India coastal current and Lakshadweep High/Low
| Content Provider | CSIR - National Institute of Oceanography (NIO) |
|---|---|
| Author | Shetye, S. R. |
| Abstract | The West India Coastal Current (WICC) flows northward during November-February and southward during April-September. At the time of formation of the northward (southward) phase of the current, a high (low) in sea level - the Lakshadweep High (Low), forms off southwestern India, and migrates westward across the Arabian Sea. The annual cycle of the WICC and that of the Lakshadweep High/Low arise from a set of circumstances that are special to the North India Ocean. This relatively small tropical basin is driven by seasonal monsoon winds. As a result, its wind-dirven near-surface circulation consists primarily of annual and semi-annual long, equatorially-trapped Kelvin and Rossby waves, and coastally-trapped Kelvin waves. In terms of these waves, the West India Coastal Current is a superposition of annual and semiannual coastally-trapped Kelvin waves. The Lakshadweep High/Low forms when the Kelvin waves, on turning around Sri Lanka, and propagating northward along the west coast of India, radiate Rossby waves. |
| Starting Page | 637 |
| Ending Page | 651 |
| Page Count | 15 |
| File Format | |
| Journal | Sadhana |
| Volume Number | 23 |
| Language | English |
| Publisher | Indian Academy of Sciences, Bangalore, India |
| Access Restriction | Open |
| Subject Keyword | Nearshore currents Coastal oceanography Surface circulation Wind-driven circulation Planetary waves Kelvin waves |
| Content Type | Text |
| Resource Type | Article |
