Ocean currents cause hills to form as water moves around in circle as water moves around in circle it piles up in middle it piles up in middle the greater the slope, the more quickly water flows greater current. Presentation pdf available december 2014 with 10,905 reads. Ocean currents article about ocean currents by the free. Surface currents surface currents are caused by the wind and usually. As i write, severe drought conditions are occurring in a number of western pacific countries. At present, climate change is one among the global difficulties which the people are facing.
What causes ocean currents ocean exploration facts. The module focuses on the driving mechanisms for currents. The gulf stream currents follows the course through the north atlantic for millennia. This powerpoint contains many visuals, notes, videos and questions to stimulate all types of academic learners. Ocean currents, including the ocean conveyor belt, play a key role in determining how the ocean distributes heat energy throughout the planet, thereby regulating and stabilizing climate patterns. Ocean currents transport important quantities, such as nutrients, heat and pollutants around the world, often with direct consequence to humans. Presentations ppt, key, pdf logging in or signing up. Ocean currents earth surface wind pattern figure 6. Scientists across the globe are trying to figure out why the ocean is becoming more violent and what, if anything, can be done about it. Ocean currents and climate study guide ocean water the ocean water never stands still. At great depths and on the bottom there are significantly slower movements of water particles in a certain general direction, usually opposite that of the surface. Ocean water circulates in currents caused by wind and by density differences currents are the flow of water between areas of different surface. Currents current a large stream of moving water that flows through the ocean.
Ocean currents, including the ocean conveyor belt, play a key role in determining how the ocean distributes heat energy throughout the planet. What indian ocean currents tell us about possible mh370. This module discusses the origin of ocean currents in both the open ocean and in coastal areas. Ocean currents free download as powerpoint presentation.
Some currents are shortlive and small and other are vast and they take a long time to complete a circuit of the globe. If youre looking for a free download links of how the ocean works. Origin of ocean currents drag exerted by winds flowing across the ocean causes the surface layer of water to move. The questions at the beginning of the powerpoint get the students thinking and ready for the ma. This resource includes a slide powerpoint presentation and 2 versions of the student notes pages full size and interactive notebook format modified notes also included. Ocean water contains streamlike movements of water called ocean currents. Pdf today, ocean currents are also gaining importance due to the possibility of harnessing alternative energy. Upwelling is a process in which currents bring deep, cold water to the surface of the ocean. An introduction to oceanography pdf, epub, docx and torrent then this site is not for you. Ppt ocean currents powerpoint presentation, free download id. Ocean current, stream made up of horizontal and vertical components of the circulation system of. The temperature of atmosphere and oceans have been increased, there is an increase in sea level, a powerful decrease in arctic sea ice and along with all these there are other changes too which are related to climate and its change. Ocean currents warm currents flow away from the equator.
Land near the ocean is often warmer in winter and cooler in summer. Currents are cohesive streams of seawater that circulate through the ocean. Surface currents in the ocean are driven by global wind systems that are fueled by energy from the sun. Ocean currents currents surface currents in the oceans are driven by winds. 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. On this time scale, the warming and thermal expansion of the oceans may account. Ocean currents are the vertical or horizontal movement of both surface and deep water throughout the worlds oceans. Ocean currents, abiotic features of the environment, are continuous and directed movements of ocean water.
This is known as the coriolis effect and is largely responsible for upwelling. Ocean currents continuous movement of ocean water due to wind and the coriolis effect surface currents warm currents flow away from equator cold curents counter currents flow in the opposite direction of windrelated currents gulf stream rings stream wanders, sends out. Winddriven currents deep water currents 40% of the global heat transport move slower than surface winds kilometers per day vs. Distribute the student handout before you begin for students to take notes on key information. Ocean currents and convection powerpoint and notes by. The module focuses on the driving mechanisms for currents, along with influences that modify existing currents. An illustration of the indian ocean gyre, a swirling vortex of ocean currents in the indian ocean between africa and australia. Ocean currents and climate average february temperatures oceanography 112 oceanography 112 phil farquharsonphil farquharson upwelling and downwelling upwelling vertical movement of cold, vertical movement of cold. Upwelling is a result of winds and the rotation of the earth. Jan 19, 2018 03 june 2018 the national centers for environmental information is proud to announce the global ocean currents database gocd is a product generated by ncei. Upper ocean deep ocean deep ocean circulation surface circulation ess200a prof. Ocean currents are like rivers that move within the ocean.
Global ocean currents free download as powerpoint presentation. Other places receive indirect rays, and so are colder. An overview of ocean currents and how they circulate. Here we are giving you tsunami seminar and ppt with pdf report. Because of this rotation, winds tend to veer right in the northern hemisphere and left in the southern hemisphere. Ocean currents and climate change pik research portal. On the surface of the ocean they spread out into a broad band and encompass a layer of water of a certain depth. Ocean currents power point slides linkedin slideshare. Currents are influenced by global wind coriolis effect, salinity, continental deflection and convection cells. Capable of moving large amounts of water long distances. Ocean currents ocean currents mass movement or flow of ocean water river within the ocean conveyor belt two types surface deep or subsurface ocean currents vocabulary gyre. An ocean current is a regular movement of large amounts of water along defined paths. A surface current is an ocean current that generally flows in the upper. Ocean water is on the move, affecting your climate, your local ecosystem, and the seafood that you eat.
Earths major wind belts, called prevailing winds, influence the formation of ocean currents and the direction they move. It was all about tsunami seminar and ppt with pdf report. Ocean currents moving seawater surface ocean currents transfer heat from warmer to cooler transfer heat from warmer to cooler areas oceanography 101 oceanography 101 phil farquharsonphil farquharson similar to pattern of major wind belts affect coastal climatesaffect coastal climates deep ocean currents. Jinyi yu basic ocean current systems from is the temperature rising. Atlantic ocean pacific ocean arctic ocean indian ocean making currents the gravitational forces of the moon and sun on the water causes the tides the moon, being nearest, has the greatest effect even though the sun is the larger of the two. Factors influencing currents sun wind coriolis gravity 4.
Ocean currents national oceanic and atmospheric administration. A free powerpoint ppt presentation displayed as a flash slide show on id. Today were going to learn about ocean currents slide 3 1. Global winds drag on the waters surface, causing it to move and build up in the direction that the wind is blowing. Map of temperature of the north atlantic ocean shows the warm gulf. Southern transverse currents transverse currents are the major eastare the major eastwest currents powered primarily by trade winds and westerlies provide most of the energy for the worlds surface currents. Csiro scienceimage 10719 noaa polar orbiting satellites obtain the data generating sea surface temperature images this is a composite 15day image showing the extension of the leeuwin current around tasmania. Global wind patterns ocean surface current patterns questions. This circulation is thought to be responsible for the large flow of upper ocean. Currents normally move in a specific direction and aid significantly in the circulation of the earths moisture, the resultant weather, and water pollution. Direct observations of subsurface currents are made by deploying current meters from. Ppt the atlantic ocean powerpoint presentation free to.
The major surface circulation patterns at sea are the result of the prevailing winds in. Surface currents extend to about 400 m below the surface, and they move as fast as 100 kmday. Surface currents affect water to a depth of several hundred meters and. In summer, the ocean acts like an air conditioner as cooler ocean air moves inland through convection currents. I dont own it but i used it in my aquatic science class. Video worksheet movie guide for bill nye ocean currents qr code link download. The calculated total changes in lod are in the order of 0.
Ppt ocean currents powerpoint presentation free to. Ocean currents result from two processes the action of the wind on the surface of the water, and from variation in water temperature that causes movement a process known as convection. Introduction an ocean current is a continuous, directed movement of seawater generated by forces acting upon thismean flow, such as breaking waves, wind, the coriolis effect, cabbeling, temperature an d salinitydifferences, while tides are caused by the gravitational pull of the sun and. Surface currents surface currents are caused by the wind and usually move only the upper few hundred meters of water. This presentation explains how currents of air and sea affect our world. Jan 29, 2016 waves, currents, tides, spring tides, neap tides, surface currents, deep water currents, deep water waves, surface waves. Ocean currents waves and tides types and causes with worksheets download. The questions at the beginning of the powerpoint get the. Ocean currents and climate national geographic society. Ocean currents translatory movements of masses of water in the seas and oceans. This secondary education lesson covers ocean currents, how they work and what affects them. Ocean currents are similar to winds in the atmosphere in that they transfer. These 4 factors keep currents flowing in distinct patters around the earth. These currents are on the oceans surface and in its depths, flowing both locally and globally.
Some areas receive direct sun rays all year and are always warm, like the equator. Convection occurs because the oceanic waters heat up becoming less dense. Ocean current notesocean water contains streamlike movements of water called ocean currents. It is derived from ncei aips that hold in situ ocean current data from a diverse range of instruments, collection protocols, processing methods, and data storage formats. Debris from flight 370 could have traveled along these currents to. Ocean circulation winddriven circulation ekman layer, transport, pumping sverdrup theory western boundary current ess228 prof. All you need to do is just click on the download link and get it. Jul 21, 2019 ocean currents are the vertical or horizontal movement of both surface and deep water throughout the worlds oceans. Ocean currents mass movement or flow of ocean water river within the ocean two types surface and deep. Jul 30, 2015 an illustration of the indian ocean gyre, a swirling vortex of ocean currents in the indian ocean between africa and australia. Nearly closed current system in the open ocean clockwise pattern in n. Ocean currents involve large water masses and are any. Ocean currents and convection powerpoint and notes by the. Easy unsubscribe links are provided in every email.
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