382 
794 Re CHAR DISiOIN 
and to=7»—273.16=20°, 40°, 60°C, the results 
summarized in Table IX. 
Additional data (for pure water) used in Eqs. 
(II-1) and (11-4) were 
B(t) =2.996 +7.285 x 10-3(t — 25) — 1.790 
x 10-*(t— 25)? +6.13X10-7(t—25)? kilobars,'* 
and 
1 0 loguv(0, 273.16+42) 
2.303 at 
2(t—3.98) 
~ 244,860-+15,040(¢—3.98)° 
(0.62) (15,040) (t— 3.98) 1-2 
~ [244,860-+15,040(¢—3.98)9-62 7}? 
obtained from Ipatov’s!® empirical equation for 
v by differentiation. 
The average value of n is 7.146. In the present 
calculations this value has been rounded off to 
dels 
The entries in Tables IV, V, and VI therefore 
contain more significant figures than the test 
justifies..On the basis of the test, the errors 
associated with the use of the modified Tait 
equation are of the order of several percent. In 
16]. V. Ipatov, J. Phys. Chem. (U.S.S.R.) 5, 1230 (1934). 
ARONS, 
AND HALVERSON 
particular, the results obtained for low pressures 
will disagree with known data by several percent. 
APPENDIX III 
Symbols 
A{.S]=parameter in modified (‘‘adiabatic’’) Tait equation- 
of-state. 
B(t)=parameter in isothermal Tait equation-of-state. 
c=local velocity of sound. 
Co=velocity of sound at zero pressure. 
Cp=specific heat at constant pressure. 
h=dissipated enthalpy increment: a co(0, T’)dT". 
AH =enthalpy increment: AH =w-+h. 
n =characteristic constant in Tait equation-of-state. 
Po=initial pressure ahead of shock front, po=0, in 
these calculations. 
p=pressure behind shock front. 
S=entropy. 
s5=sea water salinity. 
= temperature in °C. 
T =absolute temperature. 
u=particle velocity behind shock front. 
U=shock front propagation velocity. 
vo=specific volume of medium ahead of shock front. 
v=specific volume of medium behind shock front. 
Bo=mean compressibility at zero pressure over temper- 
ature range AT. 
p=density. 
Pp vp’, Slip. 
vo c[p’, S] 
w=undissipated enthalpy increment: i i v[p’, S]dp’. 
o = Riemann function: 
