Currents
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The document discusses several major ocean currents: The Labrador Current flows south along the coasts of Labrador and Nova Scotia before meeting the warm Gulf Stream. The combination produces heavy fogs and rich fishing grounds. The Gulf Stream originates in Florida and flows north along the eastern US and Newfoundland before crossing the Atlantic. It influences the climate of eastern North America and western Europe. The Kuroshio Current begins off Taiwan and flows northeast past Japan before merging with the North Pacific Current. It transports warm water north and influences the climate and coral reefs of Japan. The cold Oyashio Current flows south through the Bering Strait and mixes with the Kuroshio Current off
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World ocean currents
1. Ocean currents are large streams of moving water that flow through the oceans and are influenced by various factors like winds, the Coriolis effect, temperature and salinity differences.
2. Major ocean currents include the Gulf Stream and North Atlantic Drift in the Atlantic Ocean, the North and South Pacific currents in the Pacific Ocean, and seasonal monsoon-driven currents in the northern Indian Ocean.
3. Ocean currents play an important role in global climate by transporting heat from the equator to the poles.
Ocean currents
This document discusses ocean currents, including their layers, properties, forces, and major currents in the Atlantic Ocean. It describes three main layers - surface currents in the upper 10% influenced by winds and temperature, a transition layer where temperature and density rapidly change, and deep currents in the lower 90% influenced more by density and gravity. The key forces that drive ocean currents are solar heating, winds, gravity, and the Coriolis effect. It outlines several major Atlantic currents including the Gulf Stream, North Atlantic Drift, and others.
HYDROSPHERE-2.pptx
The document discusses the hydrosphere, which is the total amount of water on a planet. It includes water on the surface, underground, and in the air. On Earth, the hydrosphere includes oceans, lakes, rivers, groundwater, ice caps, and water vapor in the atmosphere. Water moves through the hydrosphere via the water cycle of evaporation, precipitation, and collection. The hydrosphere plays an important role in maintaining Earth's atmosphere and climate.
ocean currents water masses
The document discusses various topics related to ocean currents including:
1. Surface currents are driven by wind and heat distribution and form large gyre patterns in the oceans.
2. Deep ocean currents are driven by differences in water density from temperature and salinity and redistribute heat around the globe through thermohaline circulation.
3. Ocean currents influence climate by transporting warm and cold water to coastlines, affecting local and regional weather patterns.
OCEAN CURRENT.pptx
NORTH ATLANTIC OCEAN CURRENTS
WHAT ARE CURRENTS?
WHY CURRENTS ARE IMPORTANT?
TYPES OF CURRENTS?
GULF STREAM CURRENT
NORWEGIAN CURRENT
LABRADOR CURRENT
NORTH ATLANTIC DRIFT
CANARY CURRENTS
MAPS INCLUDED
LOCATION OF CURRENTS
NATURE OF CURRENTS
Untitled_(30).pdf
The document discusses various topics related to ocean currents including:
- The Gulf Stream is the strongest ocean current.
- Equatorial countercurrents are driven by differences in sea level caused by ocean circulation patterns.
- Deeper water moves at a slower speed than surface water due to friction, causing the lengths of arrows in an Ekman spiral to get shorter with depth.
- Upwelling occurs in areas of diverging surface currents and where there are seamounts or sharp bends in a coastline.
Oceanic currents GEography
Ocean currents are formed due to differences in temperature, density, and planetary winds. Warm currents flow away from the equator while cold currents flow toward the equator. In 1992, a strange incident occurred where a ship lost a container of toys in the Pacific Ocean near Hawaii. These toys then traveled through the ocean currents, with some reaching Alaska after 10 months and others crossing into the Arctic Ocean by 2000. Ocean currents impact climate by keeping some coastal regions warmer in winter and influencing precipitation levels in other areas. They also concentrate nutrients and plankton which leads to large fishing grounds.
Higher Geography Ocean Currents
Ocean currents play an important role in redistributing heat around the globe. They transfer warm water towards the poles and cool water towards the equator, making sure temperatures remain balanced. Ocean currents are driven by thermohaline circulation, where differences in water density due to temperature and salinity cause convection currents. Major currents like the Gulf Stream can flow for thousands of kilometers and have a significant impact on nearby climates, such as northwest Europe which is warmer than expected for its northern latitude due to the Gulf Stream.
Ocean currents (pacific)
The document summarizes several ocean currents in the Pacific Ocean. It describes how surface currents are driven by prevailing winds and form large gyres that rotate clockwise in the north and counterclockwise in the south. In the North Pacific, the surface circulation is dominated by a clockwise-rotating gyre formed by the North Equatorial Current, Kuroshio Current, North Pacific Current, and California Current. In the South Pacific, the surface circulation is dominated by a counterclockwise-rotating gyre formed by the South Equatorial Current, East Australia Current, northern edge of the West Wind Drift, and Peru Current. The document also provides details on several specific currents including the North Equatorial Current, Oy
oceancurrent-170430180458.pdf
The document summarizes ocean currents. There are two types of ocean currents: surface currents driven by wind and solar heating in the top 400 meters, and deep water currents below 400 meters driven by water density variations. Surface currents form circular ocean gyres and influence climate by transporting heat. Examples include the Gulf Stream and El Niño/La Niña currents. Deep water currents are less understood and form when surface currents generate upwelling or dense water sinks from cooling or evaporation. Ocean currents significantly impact global and regional climates.
Ocean current
Oceans are a vast body of salt water that covers almost three to fourths of the earth's surface.
Seas are smaller, found on the margins of the ocean and are partially enclosed by land.
Seawater:
High density, high heat capacity, colder, salty and slightly compressible (its volume decreases under pressure), thus its density increases with pressure.
Why is Ocean Circulation Important?
•Similar to winds in the atmosphere, they transfer significant amounts of heat from equatorial areas to the poles and thus play important roles in determining the climates of coastal regions.
•The ocean circulation pattern exchanges water of varying characteristics, such as temperature and salinity
•ocean currents and atmospheric circulation influence one another.
•in addition, they transport nutrients and organisms
Water. The hydrosphere
The document discusses the hydrosphere, specifically water on Earth. It covers the basics of water molecules, the water cycle, oceans, and other bodies of water. The key points are:
- Water (H2O) covers 70% of Earth's surface and is made up of two hydrogen atoms and one oxygen atom.
- The water cycle constantly moves water around Earth through processes like evaporation and precipitation.
- The oceans are the largest part of Earth's hydrosphere, covering over 70% of the planet. The four major oceans are the Pacific, Atlantic, Indian, and Arctic oceans.
- Other bodies of water include lakes, rivers, ice caps, and groundwater, which
Class 7 chapter_5_water_surrounding_the_earth
The document discusses various aspects of water surrounding the Earth. It describes the five major oceans of the world and explains the water cycle process. It discusses different movements of ocean water including waves caused by wind and ocean currents originating from solar heating, density differences, the Earth's rotation, and planetary winds. Tides are also caused by the gravitational pull of the sun and moon and come in two types: spring and neap. Oceans are important to humans as they facilitate trade, provide abundant plant and mineral resources, and influence climate. The conclusion discusses the devastating 2004 Indian Ocean tsunami that killed many and the relief efforts that followed.
Oceanic currents
The document provides information about ocean currents, including:
1) The global conveyor belt involves cold, salty water sinking in the North Atlantic and circulating in a deep ocean current around the world before rising again in other ocean basins and looping back to the North Atlantic.
2) Ocean currents can be classified based on depth as surface currents in the top 400m or deep water currents that circulate deeper due to density variations.
3) El Niño involves unusually warm waters in the eastern Pacific affecting global weather, while La Niña has below-average temperatures in that region with opposite weather impacts.
Current slideshow
This document discusses ocean circulation patterns driven by temperature and salinity differences. It explains that surface waters are well-mixed to 100m depth, below which density changes rapidly due to temperature decreases. Latitude also affects density, with warmer, lower salinity water at the equator being less dense than cooler, higher salinity water at 30 and 60 degrees latitude. Thermohaline circulation refers to global-scale density-driven vertical circulation controlled by temperature and salinity. Gyres are large circular ocean currents driven by winds and the Coriolis effect. Different ocean basins have varying circulation patterns influenced by factors like incoming rivers and surrounding land masses.
Ocean properties compilation
El Niño is a periodic warming of ocean waters in the eastern Pacific that occurs every 2-7 years. It causes changes to weather patterns around the world like droughts. Ocean currents are driven by factors like wind and the Coriolis effect. The ocean can be divided into layers with different temperatures and pressures. Tides are caused by the gravitational pull of the moon and sun. They have high and low phases. Salinity measures the salt content in ocean water, which is mostly sodium chloride. Evaporites form when minerals precipitate out of waters with high salinity in areas with high evaporation rates.
FINAL OCEANS!.pptx
This document provides information about the oceans of the world. It begins with an introduction to oceans and other bodies of water, then describes each of the five major oceans - the Pacific, Atlantic, Indian, Arctic, and Southern oceans. For each ocean, it discusses key features like location, climate patterns, ocean currents, and sea ice formation. It also briefly describes two important canals, the Panama and Suez canals, as well as major rivers of the world. The document aims to define and describe the major water bodies on Earth's surface.
Major Oceanic Currents of the World
The document discusses ocean currents, their causes, types, and effects. Ocean currents are large horizontal movements of ocean water caused by factors like wind, temperature differences, and the Earth's rotation. There are warm currents that flow from the equator towards the poles, and cold currents that flow from the poles towards the equator. Major warm currents include the Gulf Stream and Brazil Current, while cold currents include the Labrador and California currents. Ocean currents influence climate by modifying temperatures and rainfall patterns, and affect trade and economies through impacts on ports, fisheries, and transport of goods.
Class 7 ch 5 water-pdf
This is PPT of class -7 ,Geography, Chapter -5, Water
Reference book is NCERT, .
This is useful for teachers who teach in CBSE and Chhattisgarh board.
so download and use online and offline teaching.
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Currents
- 2. OCEAN CURRENTS AND PLANETARY WIND
- 3. OCEAN CURRENTS OF PACIFIC OCEAN
- 4. OCEAN CURRENTS OF ATLANTIC OCEAN