Oceanography Chapter 3
Bathymetry - the measure of ocean depths and the charting of the shape of the sea floor,
Sonar- sound navigation and ranging
Multibeam echo sounders - map the seafloor in strips up to 37 miles wide, they are dragged
Oceanography Chapter 2
First proposed by Alfred Wegner
-Supercontinent Pangaea began breaking apart 200 million years ago
-Panthalassa - the ocean
-Panthalassa contained smaller seas such as the Tethys sea
-Theory was based on continenta
Oceanography Chapter 1
70.8% of the Earths surface is ocean.
97.2% of Earths water is ocean water.
How many Oceans?
4 principal oceans and 1 additional ocean
Pacific - Largest, covering more than 1/3 of Earths surface area, deepest
Atlantic- Half the size