1 / 11

Deep Ocean Currents

Deep Ocean Currents. Global Conveyer Belt Thermohaline. http://www.youtube.com/watch?v=w_8mw-1HYFg. What is the Global Conveyer Belt?. It is a current or collection of currents that move below the surface of the water.

alexa
Download Presentation

Deep Ocean Currents

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Deep Ocean Currents Global Conveyer Belt Thermohaline

  2. http://www.youtube.com/watch?v=w_8mw-1HYFg

  3. What is the Global Conveyer Belt? • It is a current or collection of currents that move below the surface of the water. • Driven by the density of water (remember water that is cold and has a high salinity is more dense.) • This causes the waters of the oceans to spread out and move among the different oceans due to the changes in the mass of waters density (temperature and salinity). • http://www.youtube.com/watch?v=FuOX23yXhZ8

  4. Let’s Journey with a Water Mass • The current begins in the waters near the Northern Atlantic regions. Here the ocean water sinks to the bottom of the ocean due to its density. • As a deep surface current it moves back toward the Atlantic Ocean and eventually back to the Northern Atlantic region (to sink again)

  5. Upwelling • Occurs due to changes in the density of water (salinity or temperature) • Can occur due to the topography of the ocean floor. For example the cold current running into the continental plate.

  6. Benefits to Upwelling • Brings nutrients up from the ocean floor. • Bring Cold water up toward the surface • Causes deep water to move in the ocean. • Allows for gases to be dissolved in the water.

  7. Facts to Keep In Mind • This thermohaline circulation (another name) moves more slowly than surface currents • It can take 1,000 years for the water to complete one full circuit • The coldest, saltiest, densest water is found off the coast of Antarctica

  8. Other Sources for Review • http://oceanservice.noaa.gov/education/kits/currents/06conveyor3.html • http://education.nationalgeographic.com/education/encyclopedia/ocean-conveyor-belt/?ar_a=1 • http://www.youtube.com/watch?v=NsdH_NRM-CU

More Related