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(the study of the deep seas or oceans involves the abyss or the "deep seas" which cover almost two-thirds of the earth's surface; showing applicable scientific terminology in this unit)
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“deep sea”
Deep Sea Numerical Statistics
1. Average weight of organisms per square meter (3.28 feet) near the surface: five kilograms (eleven pounds).
2. Rate of expansion between tectonic plates under the Arctic Ocean: seven millimeters (.28 inches) a year.
3. Average depth of the oceans: 3,729 meters (12,234 feet or 2.32 miles).
4. Average depth of the Pacific, the deepest and largest of all oceans: 4,188 meters (13,740 feet or 2.60 miles).
5. Hydrothermal sites discovered in the last 25 years: 100.
By comparison, the biomass at great depths is less than one gram per square meter (3.28 feet); there, the populations are less dense, although the diversity of species is greater.
Compare this to the rate in the Pacific, where they separate at a speed of 18 centimeters (7 inches) per year; which is about twenty-five times faster.
4. Average depth of the Pacific, the deepest and largest of all oceans: 4,188 meters (13,740 feet or 2.60 miles).
By itself, it represents nearly half of the expanse of water on earth.
This entry is located in the following unit:
Ocean and Deep Sea Terms
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Ocean and Deep Sea Terms
A list of deep sea terms.
This entry is located in the following unit:
Index of Scientific and Technological Topics
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Ocean and Deep Sea Terms
- An Introduction to the Biology of Marine Life by James L. Sumich; Wm. C. Brown Publishers; Dubuque, Iowa; 1988.
- Marine Ecology by Jeffrey S. Levinton; State University of New York at Stony Brook; Prentice-Hall Inc.; Englewood Cliffs, New Jersey; 1982.
- The Silent Deep by Tony Koslow; The University of Chicago Press; Chicago; 2007.
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Bibliography or Lists of Glossary-Term Sources
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