Using the simplified linear approximating to the equation of state of seawater with respect to standard seawater (with average density r0 = 1027 kg/m3, in-situ temperature T0 = 10ºC and salinity S0 = 35) given below: rstp - r0 = [-a . (T-T0) + b . (S-S0) + k . p] with constant coefficients a = 0.15 kg/m3 per degree Celcius; b = 0.78 kg/m3 per part per thousand salinity; k = 4.5 x10-3 kg/m3 per decibar. What are the corresponding sigma (sstp = rstp - 1000) and sigma-t (st = rst0 - 1000) values at those levels?
Using the simplified linear approximating to the equation of state of seawater with respect to standard seawater (with average density r0 = 1027 kg/m3, in-situ temperature T0 = 10ºC and salinity S0 = 35) given below:
rstp - r0 = [-a . (T-T0) + b . (S-S0) + k . p]
with constant coefficients a = 0.15 kg/m3 per degree Celcius; b = 0.78 kg/m3 per part per thousand salinity; k = 4.5 x10-3 kg/m3 per decibar. What are the corresponding sigma (sstp = rstp - 1000) and sigma-t (st = rst0 - 1000) values at those levels?
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p = 50 db, T = 27.06 ºC, S = 34.992 |
rstp = 1024.66 kg/m3 |
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p = 500 db, T = 6.54 ºC, S = 34.271 |
rstp = 1029.20 kg/m3 |
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p = 2,500 db, T = 1.76 ºC, S = 34.663 |
rstp = 1039.223 kg/m3 |
|
p = 4,500 db, T = 1.45 ºC, S = 34.696 |
rstp = 1048.295 kg/m3 |
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