Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Chapter 23 The Ocean Floor
Document related concepts
Demersal fish wikipedia , lookup
Marine debris wikipedia , lookup
Blue carbon wikipedia , lookup
Anoxic event wikipedia , lookup
Challenger expedition wikipedia , lookup
Oceanic trench wikipedia , lookup
History of research ships wikipedia , lookup
Pacific Ocean wikipedia , lookup
Southern Ocean wikipedia , lookup
Marine pollution wikipedia , lookup
Marine biology wikipedia , lookup
Arctic Ocean wikipedia , lookup
Indian Ocean Research Group wikipedia , lookup
Ocean acidification wikipedia , lookup
Ecosystem of the North Pacific Subtropical Gyre wikipedia , lookup
Marine habitats wikipedia , lookup
Indian Ocean wikipedia , lookup
Physical oceanography wikipedia , lookup
Transcript
Chapter 23 The Ocean Floor • 3 ways to study the ocean floor……. • Echo sounding • Sediment sampling • Satellite observations • Echo Sounding • SONAR • Sound signal is sent to the ocean floor and the time it takes to reach the ocean floor and return determines the depth • Sediment • Long, hollow Sampling…Core cylindrical Sampling instrument removes a long core of sediments from the ocean floor • Satellites • Provides the greatest amount of speed and information for creating ocean floor maps 23.2 - The Continental Margin • Continental Margin • Underwater part of the continental crust • Parts of the continental Margin • Shelf • Slope • Rise • Parts of the continental Margin • A plate boundary ……like a subduction zone • Not on a plate boundary 23.3 - The Ocean Basin • • • • • • • Abyssal Plains Abyssal Hills Deep Sea Trenches Mid-Ocean Ridges Deep Ocean Vents Corals And Atolls Seamounts & Guyots 23.4 – Ocean Floor Sediments • Terrigenous • Biogenous • Hydrogenous • Sediments from the rocks on land • Sediments from once living things • Crystals formed in the water that settle on the sea floor
