Book contents
- Frontmatter
- Contents
- Contributors
- Editors' preface
- Keynote address to the 1977 Symposium SIR JAMES LIGHTHILL
- Part I The large-scale climatology of the tropical atmosphere
- Part II The summer monsoon over the Indian subcontinent and East Africa
- Part III The physics and dynamics of the Indian Ocean during the summer monsoon
- 29 Observations of the Somali Current and its relationship to the monsoon winds
- 30 Structure of currents and hydrographic conditions in the western equatorial Indian Ocean during the summer monsoon
- 31 Recent observations in the equatorial Indian Ocean
- 32 Sea temperature variations in the northeastern Arabian Sea in relation to the southwest monsoon
- 33 Heat budget of the north Indian oceanic surface during MONSOON-77
- 34 The energy budget at selected stations over the north Indian Ocean during MONSOON-77
- 35 Observations of coastal-water upwelling around India
- 36 A numerical study of surface cooling processes during summer in the Arabian Sea
- 37 Maximum simplification of nonlinear Somali Current dynamics
- 38 Laboratory modelling of the oceanic response to monsoonal winds
- Part IV Some important mathematical modelling techniques
- Part V Storm surges and flood forecasting
- Index
35 - Observations of coastal-water upwelling around India
Published online by Cambridge University Press: 05 November 2011
- Frontmatter
- Contents
- Contributors
- Editors' preface
- Keynote address to the 1977 Symposium SIR JAMES LIGHTHILL
- Part I The large-scale climatology of the tropical atmosphere
- Part II The summer monsoon over the Indian subcontinent and East Africa
- Part III The physics and dynamics of the Indian Ocean during the summer monsoon
- 29 Observations of the Somali Current and its relationship to the monsoon winds
- 30 Structure of currents and hydrographic conditions in the western equatorial Indian Ocean during the summer monsoon
- 31 Recent observations in the equatorial Indian Ocean
- 32 Sea temperature variations in the northeastern Arabian Sea in relation to the southwest monsoon
- 33 Heat budget of the north Indian oceanic surface during MONSOON-77
- 34 The energy budget at selected stations over the north Indian Ocean during MONSOON-77
- 35 Observations of coastal-water upwelling around India
- 36 A numerical study of surface cooling processes during summer in the Arabian Sea
- 37 Maximum simplification of nonlinear Somali Current dynamics
- 38 Laboratory modelling of the oceanic response to monsoonal winds
- Part IV Some important mathematical modelling techniques
- Part V Storm surges and flood forecasting
- Index
Summary
The seasonal locations of upwelling in the coastal waters around India and the importance of upwelling to the Indian fisheries are discussed.
Introduction
The monsoons and coastal-water upwelling have much in common. While the former improves the agricultural production, the latter enriches the living resources of the seas. Both phenomena have, therefore, tremendous impact on the economy of the region under their influence.
Materials and methods
The hydrographic data collected by the Central Marine Fisheries Research Institute of the Indian Council of Agricultural Research along the west coast of India have been utilized to present the thermal properties of the surface mixed layer and its associated thermocline. The average surface currents around the Indian subcontinent (Anonymous, A., 1976), published in the U.S. Navy Marine Climatic Atlas of the World (volume 3, Indian Ocean), are taken into consideration.
Results and discussion
Before dealing with the observations on coastal-water upwelling around India, it may be desirable to identify the areas and seasons wherein the process of upwelling might be expected.
By examining the general circulation around India, the coastal areas of upwelling can be speculatively located and the season of its occurrence identified. Upwelling is inferred to occur when the surface currents run parallel to the coastline with the land to the left; under these circumstances, the non-geostrophic component of the surface flow is directed away from the coast and it is likely that upwelling will be associated with it.
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- Monsoon Dynamics , pp. 523 - 528Publisher: Cambridge University PressPrint publication year: 1981
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