Introduction to Environmental Science
Class 12 - The Oceans:
We now begin our investigation of the Ocean and
its role in the Earth System.
Earlier we found that
and its circulation is unable to balance
the energy inputs and outputs.
Even with the general circulation and the
hydrologic cycle, there is an excess of
energy in the tropical regions and a deficit
of energy in the mid-latitudes and polar
Let’s see if the oceans are able to make
up the difference.
But first, let’s review some basic facts about the ocean.
The Oceans of the World
Pacific (166,241,000 sq km)
Atlantic (86,557,000 sq km)
Indian (73,427,000 sq km)
Arctic (9,485,000 sq km)
The Major Seas
South China (2,974,600 sq km); Caribbean (2,515,900 sq km); Mediterranean
(2,510,000 sq km); Bering (2,261,100 sq km); Gulf of Mexico (1,507,600 sq
km); Sea of Okhotsk (1,392,100 sq km); Sea of Japan or East Sea (1,012,900
sq km); Hudson Bay (730,100 sq km); East China (664,600 sq km); Andaman
(564,900 sq km); Black (507,900 sq km); Red (453,000 sq km)
The Ocean As A Basin