In our geography notes on the hydrosphere, we have seen the major movements of the ocean water. They are - waves, tides and ocean currents. Having covered the fundamentals, we shall see in this post, a super-fast way to learn the details of ocean currents. Names, direction, nature.and what not! Well, you might have heard so many names like Kuroshio current, Oyashio current, Peru current etc.
The movements of water in oceans can be categorized into currents, waves, and tides. Among these, ocean currents are the large masses of surface water that circulate in regular patterns around the oceans. Ocean Current Depending upon their temperature, ocean currents can be classified into warm currents and cold curren.
Ocean currents are continuous movements of water in the ocean that follow set paths, kind of rivers in the ocean. There are two type of Ocean Currents, based on depth, viz. surface currents (surface circulation- which make up about 10% of all the water in the ocean) and deep water currents (thermohaline circulation- which make up the other 90% of the ocean).
Important ocean currents. Arctic Ocean. East Greenland Current originates in the Arctic Ocean and brings cold, low salinity, water along the East Coast of Greenland.It is one of the five main currents which provides a major outflow of cold Arctic waters into the Atlantic Ocean. Norwegian Current flows north-easterly along the Atlantic coast of Norway.
Ocean currents are more powerful of all the dynamics of oceanic waters because these drive oceanic water for thousands of kilometres away. The forward movement of surface water of the oceans under the influence of prevailing winds is called drift whereas the ocean current involves the movement of oceanic water in a definite direction with greater velocity.
Ocean energy declared as Renewable Energy. The energy of ocean currents under the surface is comparable to the wind above it.. Today, Insights is synonymous with UPSC civil services exam preparation. Insights has redefined the way preparation is done in UPSC civil service exam.
Ocean currents are the routed movements of oceanic water which are constantly flowing within the ocean or on the ocean surface. An ocean current is created by several forces and elements that act upon a unit mass of water in the ocean and such factors on an environmental scale include the gravitational pull of the Moon and the Sun, wind, salinity levels, and the rotation of the earth.
Currents of North Atlantic, South Atlantic, North Indian Ocean, South Indian Ocean Solution of UPSC Prelim Questions from 1997, 2002, 2012 and 2013. Up-welling: Ekman layer, Ekman spiral, Ekman transport and their impact.
Equatorial Currents. These start on the west coast of Central America and under the influence of the prevailing trade winds traverse east to west. Due to larger expanse of the Pacific ocean and absence of any obstructing landmass, the volume of water in the Equatorial Pacific currents is much larger than that of the Equatorial Atlantic currents.
Ocean currents are the vertical or horizontal movement of both surface and deep water throughout the world’s oceans. Currents normally move in a specific direction and aid significantly in the circulation of the Earth’s moisture, the resultant weather, and water pollution. Oceanic currents are found all over the globe and vary in size, importance, and strength.
Blue Economy emphasizes on integration of development of ocean economy with social inclusion, environmental sustainability, combined with innovative business model. This is reflected in Sustainable Development Goal (SDG 14), which calls to conserve and sustainably use the oceans, seas and marine resources for sustainable development.
Water is a natural resource and it is a subject that comes under geography and science and technology in the UPSC syllabus. Water is one of the most basic, one of the most used, one of the most exploited and perhaps equal in importance to the other natural resources essential for the survival of life.
Approach: this is direct question. Introduce with what is ocean current In brief and then mention its impacts on marine life. Model Answer: Currents are powerful physical forces in the seas. They move water and heat around the globe, and help determine the chemical make-up of the water column. Currents also are a major factor in ocean ecosystems.
In this session, Sudarshan Gurjar will comprehensively cover the Ocean Currents. This class will be useful to the aspirants of UPSC Prelims and other State Government Examinations. The session will be conducted in Hindi and the notes will be provided in English.
Geography section is very necessary part of IAS prelims. Here, we present MCQs related to on movements of oceans important for IAS prelims 2017.
Ocean currents have far reaching impacts on the coastal economy. Ocean currents affects coastal economy in many ways such as. Agriculture. Ocean currents influence the climate of the coastal regions and, in many cases, well beyond the coast.
UPSC 2019 GS 1 Question Paper Analysis. Home Test Series Courses. How do ocean currents and water masses differ in their impacts on marine life and coastal environment?. UPSC 2019 GS 4 Question Paper Analysis. UPSC Mains Essay Question Paper Analysis - CSE 2019.
Tides raise the level of seawater and hence exposes a large part of the ocean for erosion It is helpful for the tidal ports that have shallow water which is a constraint for the big ships to enter. Tidal currents are a very potential source of tidal energy which is harnessed by many developed countries on a very large scale and to some extent in India as well.
Surface currents are those found in the upper 400 meters (1,300 feet) of the ocean and make up about 10% of all the water in the ocean. Surface currents are mostly caused by the wind because it creates friction as it moves over the water. This friction then forces the water to move in a spiral pattern, creating gyres. In the northern hemisphere, gyres move clockwise and in the southern they.