1. An Analysis of San Clemente Basin: Crosshore vs. Alongshore
By:
LT Courtney Minetree

2. Outline Introduction CTD Stations Data Acquisition
Purpose
CTD Stations
Data Acquisition
Data Processing and Analysis
Results
Conclusions

3. Introduction Data acquired Purpose Cruise on R/V Point Sur
Third Leg: 27 – 30JAN06
Northwest to Southeast and Southwest to Northeast transects conducted west off San Clemente Island
Purpose
Conduct analysis of San Clemente Basin’s water properties
Compare ADCP current measurements of basin to calculated geostrophic velocity measurements

4. CTD Stations Green: Crosshore Stations Red: Alongshore Stations
Blue: Not included in analysis

5. Data Acquisition ADCP: RDI 75 kHz OS Vessel Mounted
RDI 300 kHz BB Vessel Mounted

6. Data Acquisition (Continued)
CTD
Conductivity, Temperature, and Depth
Measures (33):
Temperature
Salinity
Pressure
Latitude
Longitude

7. Data Processing and Analysis
Matlab
Temperature, Salinity, Density, and Sound Velocity vs. Depth profiles
Mean Temp, Salinity, Density, and Sound Velocity Plots
Standard Deviation of Mean Plots
Geostrophic Velocity Plots
Seawater Functions
Depth (Latitude, pressure)
Distance (Longitude, latitude, units)
Density (Salinity, temperature, pressure)
Sound Velocity (Salinity, temperature, pressure)

8. Results (Temperature -- Alongshore)

9. Results (Temperature – Crosshore)

10. Results (Salinity – Alongshore)

11. Results (Salinity – Crosshore)

12. Results (Density – Alongshore)

13. Results (Density – Crosshore)

14. Results (SVP – Alongshore)

15. Results (SVP-Crosshore)

16. Results (Mean Temperature)

17. Results (Mean Salinity)

18. Results (Mean Density)

19. Results (Mean SVP)

20. Results (Std Deviation of MeanTemperature)

21. Results (Std Deviation of Mean Salinity)

22. Results (Std Deviation of Mean Density)

23. Results (Std Deviation of Mean SVP)

24. Results (Geostrophic Velocity – Alongshore)

25. Results (Geostrophic Velocity – Crosshore)

26. Results (ADCP Measurements)76 76 82 82 87 86 87 86

27. Conclusions No extreme anamolies observed
All profiles characteristic and stable
Assume data collection and processing accurate
Station 87 colder and saltier
Most likely due to upwelling
Further investigate for a later project
Recommendations:
Conduct analysis of other water properties in basin from CTD data
More thorough study of SVP profiles for Naval application
More detailed analysis of geostrophic velocities and ADCP measurements

28. Questions?