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在-2℃至35℃的整个海洋温度范围和0至42‰S盐度范围内测量准确已知盐度的海水样品电导率和同温度下标准海水电导率的比值R_(s.t.o)。盐度S<35‰的海水样品是由蒸馏水准确重量稀释标准海水制备的,快速蒸发标准海水制备高盐度海水样品继而重量稀释到已经确定的<35‰S范围。推导出了非常准确地表示1～42‰S和全部温度范围内的S与R_(s.t.o)关系式,即 S=f_1(R_(s.t.o))+f_2(R_(s.o,t.)t)=sum from n=0 to 5 a_1R~(a/2)+△t/(1+k△t)sum from n=0 to 5 b_nR~(n/2)式中△t=t-15℃,R=R_(s.t.o),只有第一项f_1要求15℃。也确定了温度对标准海水电导率的影响,用t的四次方程非常准确地表示温度t时的电导率的比值的r_(tt)(C_(35.t.o)/C_(35.15.o)),即:(?)_t=sum from n=0 to 4 C_nt~n 这两个方程足以满足常压下所有盐度测量。
Rs (s.t.o.), the conductivity of seawater samples with accurate known salinity, and the standard seawater conductivity at the same temperature were measured over the entire ocean temperature range from -2 ° C to 35 ° C and from 0 to 42 ° S salinity. Seawater samples with salinity S <35 ‰ were prepared by diluting standard seawater with distilled water and accurately diluting the sample with high-salinity seawater by rapid evaporation of standard seawater and then weight-diluted to the established <35 ‰ S range. The relationship between S and R sto in the range of 1 ~ 42 ‰ S and the total temperature is deduced, which is S = f_1 (R sto) + f 2 (R so (t)) t = Sum from n = 0 to 5 a_1R ~ (a / 2) + Δt / (1 + kΔt) sum from n = 0 to 5 b_nR ~ (n / 2) where Δt = t- = R_ (sto), only the first f_1 requires 15 ° C. The influence of temperature on the conductivity of standard seawater was also determined. Using the quadratic equation of t, the r tt (Cto / C 35.15.o) of the ratio of the conductivities at temperature t was very accurately expressed , Namely: (?) _ T = sum from n = 0 to 4 C_nt ~ n These two equations are sufficient for all salinity measurements at atmospheric pressure.