Q: When it comes to recalculate of bathy data what types of calculations and formulas does NaviEdit have and use?
A:When the bathy is recalculated in NaviEdit we have 6 different types of pressure to depth conversion formulas.
First formula, simple (depth correction):
This is the most simple case and the only case where the current depth value is reused.
The depth Z is corrected with 10 times the difference between the surface pressure and the reference 0-level pressure.
Second formula, simple (constant density):
The depth is corrected with the density value as follows:
Z = 10*(pressure – surface pressure)\(density *gravity)b
Third formula, Saunders and Fofonoff:
Sounders and Fofonoff is the UNSESCO formula (see no. 4) without integration of the geopotential anomaly:
Forth formula, UNESCO:
Is the UNESCO formula with the integration of the geopotential anomaly. This integration requires a linked CTD:
Fifth formula, Caspian Sea - requires a linked CTD:
This formula is using the geopotential anomaly correction as stated below where an integration over the complete water column covered by the vertical CTD is done.
Sixth formula, Caspian Sea - requires a horizontal CT (Aux Sensor):
This formula is using the Density Ratio Correction from below.
The Caspian Sea formula is:
Seventh formula, Caspian Sea - input values:
This formula is using the manual input values for the Temperature and Salinity.
