ABSTRACT

<target id="page_99" target-type="page">99</target>Mass and areas 100Total volume of sea water 1.4 × 1018 m3 Mass 1.44 × 1021 kg Areas  Sea total 3.62 × 1014 m2  Ocean basins 3.1 × 1014 m2 Temperature variations of the ocean with depth, latitude and season. https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315148038/efb223d3-97c8-455d-9c45-0c8e2b289d76/content/fig9_1.tif"/> Global variations of sea surface salinity. Salinity variations diminish with depth and in the deep ocean the range is restricted 34.7‰ to 34.8‰. (Courtesy of Jeff Dunn, CSIRO Marine and Atmospheric Research.) https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315148038/efb223d3-97c8-455d-9c45-0c8e2b289d76/content/fig9_2.tif"/>