The graph on page 2 comes from a
field program I was involved with in the Eastern Pacific. Ocean probes
descended into the ocean measuring both temperature and salinity. The left
panel shows temperature versus depth while the right panel shows salinity
versus depth. These readings were taken at a latitude of 8 ½ degrees North and
97 degrees West on September 13, 2001. By reading off the charts and using the
T-S diagram on Page3, fill in the following information (15 pts):
|
Depth (meters) |
Temperature (degrees |
Salinity (parts per |
Density (kg/m3) |
|
20 |
|
|
|
|
40 |
|
|
|
|
60 |
|
|
|
|
80 |
|
|
|
|
100 |
|
|
|
From what you know about thermoclines and haloclines, give
an approximate depth for the following (5 pts). Note: Donât forget UNITS!!
Start of the thermocline _________________________
Start of the halocline ___________________________
Approximate depth of the mixed layer _____________
Extra Credit (2 pts): Is this arrangement of water stable or
unstable? Explain why.
IMPORTANT: Notice that the values on
the density curves or lines are incomplete. They should read 1.030 g/cm3
or 1.025g/cm3 or 1025 g/dm3and so forth! See figure7.26.
Hint a cubic meter of pure water has a mass of 1000kg!
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