Major ocean currents of the worlddevelopment of a river system effects of. Gpsc exam, upsc exams, ssc exams, railway exams, and other such. Understanding of marine resources for upsc cse 8m 45s. Western boundary currents are warm, deep, narrow, and fast flowing currents that form on the west side of ocean basins due to western intensification. 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. Upsc syllabus salient features of worlds physical geography geophysical phenomena such as earthquakes, tsunami, volcanic activity. There is a rise in water level in the mexican gulf because of large amounts of water. World water day march 22 the movements that occur in oceans are categorized as. Gyres of ocean currents in each of the major oceans. Ocean currents shortcut method by to learn faster clear ias. There are two type of ocean currents, based on depth, viz. Upsc geography ocean currents and its impact on climate.
North equatorial current flows westwards from the western coast of mexico to the philippines. Each of the currents follows more or less a definite pattern. 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. Have a basic idea about major climatic types tropical, desert, mediterranean, taiga, arctic or polar type. Currents of north atlantic, south atlantic, north indian ocean, south indian ocean solution of upsc prelim questions from 1997, 2002, 2012 and 20. Hence, any change in the temperature or density influences the salinity of an area. Gs geography quiz for ias prelims movements of ocean water geography section is an essential part of the syllabus for the ias prelims exam. Salinity, temperature and density of water are interrelated. 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. Important ocean currents notes for upsc geography section. North equatorial current warm north equatorial current is a significant pacific and atlantic ocean current that. Oyashio kurile current bering current or alaskan current and okhotsk current meet to form oyashio current.
The indian ocean matters today, arguably more than. C8ocean currents upsc iasgulf strem,north atlantic drift,bengula,kuroshio, oyashio. Among all the subjects that are included in the syllabus of the civil services examination, geography arguably has the largest syllabus. Upsc mains geography optional syllabus is available for download as pdf. Constitutional morality important topic fulllength test gs paper 1 60 steps bonus material attempt now. This friction then forces the water to move in a spiral pattern, creating gyres.
Horizontal currents arise mainly due to friction between wind and water. Factors affecting salinity of ocean water upsc ias. Prelims test series discount 10% for nondrishti students online. All the downloads are accessible for up to one two years from the date of purchase. Ekman layer, ekman spiral, ekman transport and their impact. General awareness play a vital role in all examination. Ocean currents and mixing by winds and waves can transport and redistribute heat to deeper ocean layers. 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. Ocean currents are similar to winds in the atmosphere in that they transfer significant amounts of heat from earths equatorial. Upsc cse geography optional syllabus pdf upsc mains geography optional subject contains two papers in civil service examination.
The indian ocean covers at least one fifth of the worlds total ocean area. Download upsc mains geography optional syllabus pdf upsc. Gk, general studies, optional notes for upsc, ias, banking, civil services. If you look at a world map, you can see that earths 5 oceans are vast. It expects us to list the factor that contribute to ocean relief and how.
According to wegener, poles have changed their position, e. Each paper is for 250 marks and comprises a total of 500 marks. They also serve as a channel through which ocean currents pass modifying the climate of that area. Surface currents are mostly caused by the wind because it creates friction as it moves over the water. Best 600 indian geography pdf mcq for ssc upsc ias nda etc. 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.
Typically the lowest salinities are found where rainfall is heavy and near the. Geography is the most popular optional subject in upsc mains. Mock tests will be conducted on the line of upsc pattern consist of paper 1, paper2,paper3andpaper4. Upsc geography optional syllabus pdf download geography.
Equatorial atlantic ocean currents under the influence of prevailing trade winds, the north equatorial current and the south equatorial current start from the eastern. To download this file in pdf form click on download button given below upsc prelims 2017 physical geography notes pdf physical geography study material. Secondly, the atlantic ocean has the largest number of adjacent seas, including mediterranean seas. Major straits of the world complete list for upsc prelims. Download upsc mains geography optional syllabus pdf. Important currents of the atlantic ocean are as follows. But the currents in the indian ocean northern hemisphere change the flowdirection between summer and winter. What are the different ocean currents that carry warm water give at least three examples. The ocean currents contribute to the salinity variations. Upsc press release prelims 2020 deferred dcat pdf versions are now available on drishti ias app. Highest and lowest salinity of ocean water 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. 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. Ocean currents represent a regular volume of water in a definite path and direction. C8ocean currents upsc iasgulf strem,north atlantic drift,bengula,kuroshio,oyashio. Among these, ocean currents are the large masses of surface water that. Best 600 indian geography pdf mcq for ssc upsc ias. Geography for upsc cse ocean currents civil services youtube.
South equatorial current flows westwards in the southern pacific ocean and bifurcates into northern. 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. The movements of water in oceans can be categorized into currents, waves, and tides. Chapter 14 the atlantic ocean a glance at the distribution of high. Geography for upsc cse ocean currents civil services. Upsc often ask questions in prelims and mains from the topic of ocean currents.
An overview of ocean currents and how they circulate. The circulation currents of indian ocean is different from the pacific and the atlantic ocean. East greenland current originates in the arctic ocean and brings cold, low salinity, water along the east coast of greenland. Achievers corner drishti ias coaching in delhi, best. Next, we need to highlight the impact of ocean currents on climate. 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.
Find out the list of ocean currents of the world which will be helpful for the aspirants of the competitive exams like upscpcsssccds etc. In our geography notes on the hydrosphere, we have seen the major movements of the ocean water. Though upsc keeps changing its pattern of questions every year, atleast one can accept minimum 2 questions from maps alone. 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. Warming of indian ocean has major influence on global. Having covered the fundamentals, we shall see in this post, a superfast way to learn the details of ocean currents. Waves are formed due to friction between wind and surface water layer.
Ocean currents are the continuous flow of huge amount of water in a definite direction while the waves are the horizontal motion of water. Lets set sail on a journey to earths major ocean currents. Upsc prelims 2017 physical geography notes pdf free study. Warming of indian ocean has major influence on global warming. The indian ocean is surrounded by huge landmass of eurasia in the north and is only half the ocean. The major loops are seen in pacific ocean, atlantic ocean and the indian ocean in both the hemispheres. There are five major oceanwide gyresthe north atlantic, south atlantic, north pacific, south pacific, and indian ocean gyres.
Atlantic ocean currents equatorial, gulf stream and other. Ocean currents can also be divided into surface currents and deep currents. Surface currents affect surface water above the pycnocline explain the major relief features of ocean floor. 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. Geography for upsc cse ocean currents civil services lets crack upsc cse. Insta 75 days revision plan 2020 day 61 instatest61. 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. Water moves ahead from one place to another through ocean currents while the water in the waves does not move, but the wave trains. Download links will be made available immediately after the payment.1217 1006 547 990 628 525 373 710 1218 1609 53 422 174 606 203 69 6 770 525 1027 463 775 1549 963 1568 1168 155 83 847 332 1283 1422 710 1092 772 1324 1267 181