Manual

June 2004 Isis® Sonar User's Manual, Volume 2 119
Table G-7. Falmouth Scientific’s CTD SEG-Y format values in Q-MIPS footer record
float
Conductivity
[c] computed Conductivity in Siemens per meter
float
waterTemperature
[w] computed Water Temperature in degrees C
float
Pressure
[p] computed water pressure in psia
word
soundVelocity
[v] computed sound velocity in m/s, stored; times 30
word
Turbidity
[|] (“pipe” symbol) percent of light, times 10000
See the file
QMIPSFMT.H for the placement of these variables.
5. Towfish depth (computed in step 1) is displayed in the Depth field in the Telemetry
area in the Parameter Display window.
6. The values received in step 1 and computed in step 2 are displayed in the CTD
Computed Data area of the Sensor Display window.
• Temperature (degrees C)
• Depth (meters) will be the same depth as in the Parameter Display window
unless the depth value in the Parameter Display has been overridden with
a manual depth setting.
• Sound Velocity (meters per second) is computed using Chen Millero formula.
• Conductivity (Siemens per meter)
• Turbidity (percent of daylight)
• In playback mode, the same data are displayed in the Sensor Display
window as in record mode.
Appendix G: How Isis Processes CTD Data