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Physical Processes and wind-driven circulation in the Northern Indian Ocean. In: Winter School on Impact of Climate Change on Indian Marine Fisheries held at CMFRI, Cochin 18.1.2008 to 7.2.2008

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Title Physical Processes and wind-driven circulation
in the Northern Indian Ocean. In: Winter School on
Impact of Climate Change on Indian Marine Fisheries held at CMFRI, Cochin 18.1.2008 to 7.2.2008
 
Creator Prasanna Kumar, S
 
Subject Climate change
Oceanography
 
Description The vast expanses of oceanic waters are continuously in motion and one wonders what makes ocean
waters in a state of perpetual restlessness. Ocean currents are important as they redistribute heat, salt,
nutrients, and biological organisms. As they transport heat from tropics to poles they are capable of
influencing the climate. There are two physical processes that drive the ocean circulation and they are (1)
transfer of momentum from wind to the ocean (tangential stress) and (2) convection driven by buoyancy
changes due to heating and cooling or addition or removal of salt. The motion of the ocean due to the first
process is known as the wind-driven circulation in which winds impart momentum to the ocean. The
motion due to the second process is known as the thermohaline circulation in which the cooling in
the Polar Regions result in loss of buoyancy and causes water to sink to deep ocean. The above
separation of circulation into two components, though provides a conceptual simplification of
circulation, is somewhat artificial in the real world.
 
Publisher CMFRI; Kochi
 
Date 2008
 
Type Teaching Resource
NonPeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/5388/1/39.pdf
Prasanna Kumar, S (2008) Physical Processes and wind-driven circulation in the Northern Indian Ocean. In: Winter School on Impact of Climate Change on Indian Marine Fisheries held at CMFRI, Cochin 18.1.2008 to 7.2.2008. [Teaching Resource]