Subtropical Front
Encyclopedia
Subtropical Front is a term used in Oceanography
to describe a boundary (front
) between water systems based on temperature
and salinity
.
lying between 25
and 30 degrees north
latitude.
criterion is that it is found at the latitude at which the salinity at a depth of 100m drops below 34.9 practical salinity units.
Oceanography
Oceanography , also called oceanology or marine science, is the branch of Earth science that studies the ocean...
to describe a boundary (front
Weather front
A weather front is a boundary separating two masses of air of different densities, and is the principal cause of meteorological phenomena. In surface weather analyses, fronts are depicted using various colored lines and symbols, depending on the type of front...
) between water systems based on temperature
Temperature
Temperature is a physical property of matter that quantitatively expresses the common notions of hot and cold. Objects of low temperature are cold, while various degrees of higher temperatures are referred to as warm or hot...
and salinity
Salinity
Salinity is the saltiness or dissolved salt content of a body of water. It is a general term used to describe the levels of different salts such as sodium chloride, magnesium and calcium sulfates, and bicarbonates...
.
Northern Subtropical Front
A subtropical front in the Pacific OceanPacific Ocean
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...
lying between 25
25th parallel north
The 25th parallel north is a circle of latitude that is 25 degrees north of the Earth's equatorial plane. It crosses Africa, Asia, the Indian Ocean, the Pacific Ocean, North America and the Atlantic Ocean....
and 30 degrees north
30th parallel north
The 30th parallel north is a circle of latitude that is 30 degrees north of the Earth's equatorial plane. It stands one-third of the way between the equator and the North Pole and crosses Africa, Asia, the Pacific Ocean, North America and the Atlantic Ocean....
latitude.
Southern Subtropical Front
The boundary between warm, salty subtropical waters and Antarctic waters, found in all three ocean basins. A commonly usedcriterion is that it is found at the latitude at which the salinity at a depth of 100m drops below 34.9 practical salinity units.