Back Wassermasse German توده آب Persian Massa d'acqua Italian 水塊 Japanese 수괴 Korean Massa de água Portuguese Водная масса Russian நீர்ப்புகுதிகள் Tamil Водна маса Ukrainian 水團 Chinese
An oceanographic water mass is an identifiable body of water with a common formation history which has physical properties distinct from surrounding water. Properties include temperature, salinity, chemical - isotopic ratios, and other physical quantities which are conservative flow tracers. Water mass is also identified by its non-conservative flow tracers such as silicate, nitrate, oxygen, and phosphate.
Water masses are generally distinguished not only by their respective tracers but also by their location in the Worlds' oceans. Water masses are also distinguished by their vertical position so that there are surface water masses, intermediate water masses and deep water masses.