Physical Oceanography. Branch of oceanographic science that deals with physical characteristics of the oceans, such as density, temperature and salinity of sea water, the transmission of sound and light scattering in sea water, ice, tides, and spatial and temporal variability of currents and waves. (Free translation from the original: Material IV - Glosario de Protección Civil, OPS, 1992) . 0.81
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Swell (Oceanography). Ground Swell . Ocean waves which have traveled out of their generating area. A swell characteristically exhibits a more regular and longer period and has flatter crests than waves within their fetch. (From: AMERICAN METEOROLOGICAL SOCIETY. Glossary of Meteorology (Ralph E. Huschke, ed.). Boston: American Meteorological Society. 1959. 638 p. Cited in Glossary of Oceanographic Terms. 2nd Edition. 1966. Edited by B. B. BAKER, Jr., W. R. DEEBEL, R. D. GEISENDERFER. Oceanographic Analysis Division. Marine Sciences Department. U.S. NAVAL OCEANOGRAPHIC OFFICE. Washington, D.C. 20390. 204 p. Available in https://archive.org/stream/glossaryofoceano00unit/glossaryofoceano00unit_djvu.txt) Swells are waves not produced by the local wind and come in at a higher period (longer wave length) than waves produced by the local wind. (From: Glossary of Terms for Detailed Wave Information. National Oceanic and Atmospheric Administration. Available in http://www.ndbc.noaa.gov/waveobs.shtml) . 0.80
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Chemical Oceanography. Branch of oceanography which studies the chemical composition of dissolved gases and solids, suspended matter, the composition of ocean waters and its geographical and temporal variability. (Free translation from the original: Material IV - Glosario de Protección Civil, OPS, 1992) . 0.80
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Biological Oceanography. Part of the oceanographic science that studies the biology of marine plants, animals, and other living beings. . 0.76
Geological Oceanography. Part of oceanography which studies the funds and the margin of the oceans, their nature, relief characteristics, physical and chemical composition of materials, the interaction of rocks and sediments to air and seawater, as well as the action of various forms of wave energy underwater in the crust of the earth. . 0.73
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Oceanographic Survey. Systematic procedure of obtaining information to study the physical, chemical, biological and geological conditions of the oceans or parts of them. (Free translation from the original: Material IV - Glosario de Protección Civil, OPS, 1992) . 0.73
Oceans and Seas. Oceans . Seas and Oceans . Seas 11858 . A great expanse of continuous bodies of salt water which together cover more than 70 percent of the earth's surface. Seas may be partially or entirely enclosed by land, and are smaller than the five oceans (Atlantic, Pacific, Indian, Arctic, and Antarctic). . 0.70
