1. Comparison of Computed Geostropic Currents and ADCP
LT David Blencoe
21 March, 2001

2. CALCOFI Line 67
Monterey Bay
CALCOFI Line 67

3. Actual Ship Track Data Collection: Dec, 2000
All CTD casts went to depth
of 1000 m.
Data discarded
because depth
of CTD cast
was only 242 m

4. T-S Diagram Large Variation of Salinities in surface water
Colder, Deeper water
transporting saltier water poleward.

5. ADCP Currents

6. Temp & Salinity Plots

7. Density Anomaly

8. Computing Geostropic Currents
 v = -1/f (p/x)
(-1/)(p/x) = fv
Specific Values:
 = density
f = 2sin
 = e-5 s-1
 = latitude

9. Computing Geostropic Currents, (Contd.)
p/x = pressure along line
D = 0zdp
where:  = 1/, specific volume anomaly
z = reference level/level of no motion (1000dbar)
Making:
v= D
2sin  x

10. Geostropic Currents

11. Any Questions?