The circulation of the deep ocean is driven by the increase in density of surface water due to changes in its temperature and/or salinity. Mediterranean Intermediate Water (5B)ĭoes your identification of the samples determined by use of the T-S diagram generally conform to the printed identification of the water masses at these depths in Figure 5?Īt this speed, to travel the approximately 9000 km distance from its Antarctic source area to 40 degrees N would take a density-driven AABW current close to _ years. This is the origin of the _ sample that you identified in the Figure 2 casting.Ĭ. This water flows over the Gibraltar sill (which rises to a depth of about 290 m) and into the Atlantic, where it mixes with some cooler and less saline water and sinks to within a few hundred meters of about 1200 m depth. The water conditions at 2000 m fell near the ranges of temperature and salinity identified as a(n) _ mass.
The water conditions at 1200 m fell nearest the ranges of temperature and salinity identified as a(n) _ mass. The water conditions at 400 m fell near the ranges of temperature and salinity identified as a(n) _ mass.
The water conditions at 50m were nearest the ranges of temperature and salinity identified as a(n) _ mass. This is a stable condition that inhibits vertical motions. The 2000 m temperature, salinity values were near _, respectively.Īccording to the T-S diagram, the density of the 50 m ocean water sample you plotted is approximately _ g/cm^3.īased on the positions of the different water samples you plotted on the T-S diagram relative to the isopycnal, ocean water density at this site _ with increasing depth.
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