Density of Seawater

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Bibliographic Entry Result
(w/surrounding text)
Beicher, Robert J. Physics for Scientists and Engineers. Orlando: Saunders College, 2000.
SubstanceDensity (kg/m3)
1030 kg/m3
"Density and Weight." Compton's Interactive Encyclopedia. Copyright © 1994, 1995, 1996, 1997 The Learning Company, Inc. "Seawater is usually some 3.5 percent heavier than fresh water because it contains about 35 pounds of salts in each 1,000 pounds of water" 1035 kg/m3
Windows to the Universe team. Density of Ocean Water. Boulder, CO: ©2000-01 University Corporation of Atmospheric Research (UCAR), ©1995-1999, 2000 The Regents of the University of Michigan. "Density of ocean water at the sea surface is about 1027 kg/m3." 1027 kg/m3
"Ocean - Density and Pressure." Encyclopedia Britannica., USA, 1965. "For the reason as stated under salinity, it is customary to report the density os seawater in equivalent to "grams per litre excess over one kilogram,"designated by the symbol σ. In this notation, the specific gravity of 1.025 is expressed as σ of 25." 1025 kg/m3
Introduction to Hydrolog. Department of Geography, Okanagan University College., 11 June 2001. "The density of seawater at the surface of the ocean varies from 1,020 to 1,029 kilograms per cubic meter." 1020–1029 kg/m3

The density of an object is the ratio of its mass to its volume. Density can also be expressed as specific gravity, which is the ratio of the density of a material to the density of water. Where the density of water in SI units is 1000 kilogram per cubic meter.

The density of seawater varies with temperature and salinity of the water. As temperature increases, density decreases. As salinity of the water increasaes, density also increases. Although the density of seawater varies at different points in the ocean, a good estimate of its density at the ocean's surface is 1025 kilogram per cubic meter. Its specific gravity is therefore 1.025.

Edward LaValley -- 2002

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