Surface currents are mostly caused by the wind because it creates friction as it moves over the water. Gs geography quiz for ias prelims movements of ocean water geography section is an essential part of the syllabus for the ias prelims exam. Though upsc keeps changing its pattern of questions every year, atleast one can accept minimum 2 questions from maps alone. Surface currents affect surface water above the pycnocline explain the major relief features of ocean floor. Upsc prelims 2017 physical geography notes pdf free study.
Hence the circulation in the south indian ocean is similar to the other two oceans while the circulation in the north indian ocean is completely different. Horizontal currents arise mainly due to friction between wind and water. The movements of water in oceans can be categorized into currents, waves, and tides. Ocean currents represent a regular volume of water in a definite path and direction. Water moves ahead from one place to another through ocean currents while the water in the waves does not move, but the wave trains. Typically the lowest salinities are found where rainfall is heavy and near the. But the currents in the indian ocean northern hemisphere change the flowdirection between summer and winter. Salinity, temperature and density of water are interrelated. Warming of indian ocean has major influence on global. Upsc mains geography optional syllabus is available for download as pdf. Upsc often ask questions in prelims and mains from the topic of ocean currents. Among all the subjects that are included in the syllabus of the civil services examination, geography arguably has the largest syllabus. Download upsc mains geography optional syllabus pdf.
Upsc syllabus salient features of worlds physical geography geophysical phenomena such as earthquakes, tsunami, volcanic activity. Ocean currents can also be divided into surface currents and deep currents. There are five major oceanwide gyresthe north atlantic, south atlantic, north pacific, south pacific, and indian ocean gyres. North equatorial current warm north equatorial current is a significant pacific and atlantic ocean current that. Best 600 indian geography pdf mcq for ssc upsc ias. It is bounded by africa and the arabian peninsula known as the western indian ocean, indias coastal waters the central indian ocean, and the bay of bengal near myanmar and indonesia the eastern indian ocean. 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. Oyashio kurile current bering current or alaskan current and okhotsk current meet to form oyashio current. Mock tests will be conducted on the line of upsc pattern consist of paper 1, paper2,paper3andpaper4. Upsc geography ocean currents and its impact on climate.
Important ocean currents notes for upsc geography section. Running water major ocean currents of the worlddevelopment of a river system effects of. The circulation currents of indian ocean is different from the pacific and the atlantic ocean. An overview of ocean currents and how they circulate. It is one of the five main currents which provides a major outflow of cold arctic waters into the atlantic ocean norwegian current flows northeasterly along the atlantic coast of norway. South equatorial current flows westwards in the southern pacific ocean and bifurcates into northern.
In this article, we are giving the list of ocean currents of the world which will be helpful for the aspirants of the competitive exams like upscpcsssccds etc. Major straits of the world complete list for upsc prelims. In our geography notes on the hydrosphere, we have seen the major movements of the ocean water. Find out the list of ocean currents of the world which will be helpful for the aspirants of the competitive exams like upscpcsssccds etc. Insta 75 days revision plan 2020 day 61 instatest61. Each of the currents follows more or less a definite pattern. Secondly, the atlantic ocean has the largest number of adjacent seas, including mediterranean seas. The indian ocean matters today, arguably more than. Understanding of marine resources for upsc cse 8m 45s. North equatorial current flows westwards from the western coast of mexico to the philippines. World water day march 22 the movements that occur in oceans are categorized as.
General awareness play a vital role in all examination. Have a basic idea about major climatic types tropical, desert, mediterranean, taiga, arctic or polar type. Ocean currents shortcut method by to learn faster clear ias. There are two type of ocean currents, based on depth, viz. All the downloads are accessible for up to one two years from the date of purchase. Factors affecting salinity of ocean water upsc ias. Ocean currents types, circulation patterns, theories. Gpsc exam, upsc exams, ssc exams, railway exams, and other such. Gyres of ocean currents in each of the major oceans. Major ocean currents of the worlddevelopment of a river system effects of. C8ocean currents upsc iasgulf strem,north atlantic drift,bengula,kuroshio,oyashio. Western boundary currents are warm, deep, narrow, and fast flowing currents that form on the west side of ocean basins due to western intensification. The study of the earths elements, the different kinds of land distribution, seasons, climatic changes, water bodies, the atmosphere, different countries, and their physical topographies, soil, forests, and all the resources we see around us in our environment. If you look at a world map, you can see that earths 5 oceans are vast.
Upsc cse geography optional syllabus pdf upsc mains geography optional subject contains two papers in civil service examination. Atlantic ocean currents the behavior of the atlantic ocean currents is quite significant because of their influence on the climate of northwestern europe, climate of northwestern africa and fishing in the grand banks region. Lets set sail on a journey to earths major ocean currents. Highest and lowest salinity of ocean water upsc ias. Upsc geography optional syllabus pdf download geography. Download upsc mains geography optional syllabus pdf upsc. Geography for upsc cse ocean currents civil services. The indian ocean covers at least one fifth of the worlds total ocean area. Ocean currents are similar to winds in the atmosphere in that they transfer significant amounts of heat from earths equatorial.
Important currents of the atlantic ocean are as follows. What are the different ocean currents that carry warm water give at least three examples. Hence, any change in the temperature or density influences the salinity of an area. Ocean currents are the continuous flow of huge amount of water in a definite direction while the waves are the horizontal motion of water. Chapter 14 the atlantic ocean a glance at the distribution of high. Each paper is for 250 marks and comprises a total of 500 marks. Among these, ocean currents are the large masses of surface water that. Equatorial atlantic ocean currents under the influence of prevailing trade winds, the north equatorial current and the south equatorial current start from the eastern.
Having covered the fundamentals, we shall see in this post, a superfast way to learn the details of ocean currents. Ocean current, stream made up of horizontal and vertical components of the circulation system of ocean waters that is produced by gravity, wind friction, and water density variation in different parts of the ocean. This friction then forces the water to move in a spiral pattern, creating gyres. Geography for upsc cse ocean currents civil services youtube. Warming of indian ocean has major influence on global warming. Geography is the most popular optional subject in upsc mains. It expects us to list the factor that contribute to ocean relief and how. There is a rise in water level in the mexican gulf because of large amounts of water. Geography for upsc cse ocean currents civil services lets crack upsc cse.
The major loops are seen in pacific ocean, atlantic ocean and the indian ocean in both the hemispheres. East greenland current originates in the arctic ocean and brings cold, low salinity, water along the east coast of greenland. In banking and other competitive exams like rrb, cds, lic ao, rbi, ssc, upsc, fci, uiic, oicl, sbi clerks and po the questions on continents and oceans are being asked. Atlantic ocean currents equatorial, gulf stream and other. They also serve as a channel through which ocean currents pass modifying the climate of that area.
Download upsc mains geography optional syllabus pdf april 23, 2019 by gokul deepak s leave a comment upsc mains geography optional syllabus is available for download as pdf. Antilles, is diverted northwards and flows to the east of west indies island and helps in the formation of sargasso sea which is between n. We have created this section of indian all ocean currents notes information by keeping in mind the relevance of this subject in various competitive exams viz. According to wegener, poles have changed their position, e. Prelims test series discount 10% for nondrishti students online. To download this file in pdf form click on download button given below upsc prelims 2017 physical geography notes pdf physical geography study material. Major straits of the world are used by commercial shipping to travel from one sea or exclusive economic zone to another and they are of immense strategic and commercial importance. C8ocean currents upsc iasgulf strem,north atlantic drift,bengula,kuroshio, oyashio.
Download links will be made available immediately after the payment. The ocean currents contribute to the salinity variations. Achievers corner drishti ias coaching in delhi, best. Geography, as such, was a term that was coined by the greeks. The indian ocean is surrounded by huge landmass of eurasia in the north and is only half the ocean. Waves are formed due to friction between wind and surface water layer. Constitutional morality important topic fulllength test gs paper 1 60 steps bonus material attempt now. Upsc press release prelims 2020 deferred dcat pdf versions are now available on drishti ias app. Currents of north atlantic, south atlantic, north indian ocean, south indian ocean solution of upsc prelim questions from 1997, 2002, 2012 and 20. Ocean currents and mixing by winds and waves can transport and redistribute heat to deeper ocean layers. Ekman layer, ekman spiral, ekman transport and their impact. Best 600 indian geography pdf mcq for ssc upsc ias nda etc.
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