### Symbols and Definitions

α_{35,0,p}: Specific volume of sea water of salinity 35 ‰ and temperature O°C, and at pressure *p*.

δ: Anomaly of specific volume of sea water of salinity S and temperature ϑ and at pressure *p* (see p. 58):

[Equation]

[Equation]

(*D*_{l} − *D*_{2})_{s}: Standard geopotential distance between the isobaric surfaces *p*_{1} and *p*_{2} (equation XII, 6, p. 408):

― 1052 ―

[Equation]

Δ*D*: Anomaly of the geopotential distance between the isobaric surfaces *p*1 and *p*2 (equation XII, 7, p. 409):

[Equation]