സമുദ്രജലപ്രവാഹങ്ങൾ - Ocean Currents | Physical Geography | Kerala PSC | PK Learnings
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സമുദ്രജലപ്രവാഹങ്ങൾ - Ocean Currents | Physical Geography | Kerala PSC | PK Learnings
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Ocean currents are continuous, directed movements of seawater driven by wind, density differences (temperature and salinity), and Earth's rotation (Coriolis effect). These "rivers within the ocean" act as a global conveyor belt, transporting heat from the equator to poles, regulating climate, and distributing nutrients for marine ecosystems.
Key Aspects of Ocean Currents
Surface Currents: Driven primarily by winds, these affect the top 400 meters of the ocean and form large, circulating spirals called gyres. Examples include the warm Gulf Stream and the cold Labrador Current.
Deep-Ocean Currents: Driven by density differences (thermohaline circulation)—caused by cold, salty water sinking at high latitudes—these circulate 90% of the ocean's volume, moving slowly below 1,300 feet.
Factors Affecting Flow: Key drivers include global wind patterns, water density, tides, and the shape of coastlines (continental deflection).
Climate & Life: Ocean currents play a vital role in global climate regulation by moving heat, and they sustain marine life by transporting nutrients.
#OceanCurrents, #Oceanography, #OceanCurrentsTheHiddenRivers, #DeepSea, #MarineScience, #EarthScience, #MarineEcosystem, #OceanGeography
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#GeographyPSC #IndianOceanCurrents #PhysicalGeography #Oceanography #KeralaPSCGeography