Ocean Currents in Pacific Ocean
Ocean Currents with Clockwise Circulation
- North-Pacific Equatorial Current is a warm current caused by the North-East Trade wind.
- OyaShio is cold current flowing from the northern edge of the Pacific Ocean off the eastern coast of the Kamchatka Peninsula and the Kuril of Russia. `Oya’ means cool and ‘Shio’ current.
- KuroShio (or Japan Current) is a warm current flowing along south and eastern coast of Japan. It is also called Japan Current. The Kuro (warm) Shio current is formed by the North Pacific Equatorial Current. Latter’s water divides off the Philippines and forms the Kuro shio.
- Californian Current is a cool current in the Pacific Ocean. Temperature of water masses in this is lower than that of the water masses in the surroundings.
- North Pacific Drift is a warm current. It is caused by the westerlies. It is in fact the continuation of the Kuro shio.
- Pacific Equatorial Counter Current (Coriolis effect is nil) is a warm current flowing from the western margin of the Pacific Ocean to its eastern margin along a line about 5°N. It is a compensatory counter current.
Ocean currents with anticlockwise circulation
- South Pacific Equatorial Current are a warm current. It flows westward from the eastern margin of the Pacific along the west coast of the northern South America towards eastern coast of New Guinea.
- South Pacific Drift is a cool current. It flows eastward in about 40° South parallel. It is also called West Wind Drift.
- Cromwell Current is an, undercurrent flowing eastward along the equator beneath the South Pacific Equatorial current.
- Peru or Humboldt Current is a cold ocean current in the Pacific Ocean. Antarctic water and up-welling west-coast water, together with its northward direction, all make this current markedly cold. It flows along the Chile and Peru coasts of South America. This current is known as Peru Current or Current of Humboldt.
- Antarctic Circumpolar Current is a cool current. It flows around the Antarctic continent clockwise in latitudes 50° to 65°S.
- El Nino is a warm Pacific current, originating in the warm equatorial current. It occurs with intensity every seven to fourteen years and temporarily replaces the cold current (Humboldt Current) off the Peru coast. The El Nino effect causes sudden change of temperature. It kills fish even, so that beaches are littered with dead fish.
– Bipasha Mukherjee.