The densities of Changjiang estuarine waters

Chen Guohua; Hu Bolu; Zhang Lijun; Ji Rong; Jin Jiancheng; Chen Bing

doi:10.1007/BF02850860

Your Location：

Home >

Browse articles >

The densities of Changjiang estuarine waters

OriginalPaper | Updated：2023-05-16

- The densities of Changjiang estuarine waters
- The densities of Changjiang estuarine waters
- 海洋湖沼学报（英文） 1993年11卷第3期页码：268-275
- Affiliations：
  
  Ocean University of Qingdao
- Author bio：
- Funds：
- DOI：10.1007/BF02850860
  中图分类号：
- 纸质出版：1993
- Accepted：
Scan QR Code
The densities of Changjiang estuarine waters[J]. 海洋湖沼学报（英文）, 1993,11(3):268-275.

Guohua, C., Bolu, H., Lijun, Z. et al. The densities of Changjiang estuarine waters., Chin. J. Ocean. Limnol. 11, 268–275 (1993). https://doi.org/10.1007/BF02850860
The densities of Changjiang estuarine waters[J]. 海洋湖沼学报（英文）, 1993,11(3):268-275. DOI： 10.1007/BF02850860.

Guohua, C., Bolu, H., Lijun, Z. et al. The densities of Changjiang estuarine waters., Chin. J. Ocean. Limnol. 11, 268–275 (1993). https://doi.org/10.1007/BF02850860 DOI：

摘要

Abstract

In order to check the validity of the International Equation of State of Seawater set up by the UNESCO in 1980 for application to China coastal waters

the authors measured the relative density of Changjiang estuarine seawater and seawater solutions diluted with the Changjiang River water at one atmosphere from 5–35 salinity under 15–24°C with a high precision magnetic float densimeter designed by them. The average standard deviation of measured values was ±2.3×10−3 kgm−3. the statistical results showed that for all samples from the Changjiang estuary

the measured density with the densimeter was always higher than the density calculated by the UNESCO equation. The average differences

for dry season and flood season seawater samples were (+6.3±2.3)×10−3kgm−3 and (+8.1±2.3)×10−3kgm−3

respectively. The average difference between the measured and calculated (from the UNESCO equation) density increased linearly as salinity decreased and became +47.2×10−3 kgm−3 at the Changjiang River water salinity limit of around 0.134. A linear correlation was found between this average difference and the [Ca2+]/s ratio value. The experimental average values of [Ca2+]/s

[SO 4 2− ]/s

[Mg2+]/s

and [Sr2+]/s were 0.01183±1.0×10−4

0.07698±1.7×10−4

0.03743±8.1×10−5 and 2.26×10−4

respectively

at sample salinities of 30 to 35. The experimental value of [Ca2+]/s for the Wuhu Changjiang River water was 0.2597. The resulting densities of all samples were then fitted to an equation of the formd−d w =B 1s1/2+B 2s+B 3s3/2+B 4s2 whered w is the density of SMOW andB 1

B 2

B 3 andB 4 are temperature-dependent parameters. The average standard deviation between calculated densities of this equation and experimental values was ±3.9×10−3 kgm−3.

关键词

Keywords

references

Bigg, P. H., 1967. Density of water in S. I. units over the ránge 0–40°C.British J. Appl. Physi.18: 521–537.

Brewer, P. G., and Bradshaw, A. B., 1975. The effect of the non-ideal composition of seawater on salinity and density.J. Mar. Res.,33: 157–175.

Chen Guohua, 1992. Determination of Chinese standard seawater densities with magnetic float method at atmospheric pressureJ. Ocean University of Qingdao 22 (3): 23–34. (in Chinese)

Cox, R. A., McCartency, M. J. and Culkin, F. 1968. Pure water for relative density standard.Deep-sea Res. 15 (3): 319–325.

Millero, F. J. and Emmet, R. T., 1976. The effect of dissolved air and natural isotopic distributions on the density of water.J. Mar. Res. 34: 15–24.

Millero, F. J. and Kremling, K., 1976. The density of Baltic seawater.Deep-sea Res. 23 (12): 1129–1138.

Millero, F. J. and Poisson, A., 1981. International one atmosphere equation of state of seawater.Deep-sea Res. 28(6A): 625–629.

Millero, F. J., Lawdon, D. and Gonzalez, A. 1976. The density of artificial river and estuarine water.J. Geophysi. Res. 81: 1177–1179.

Min Xueyi, Chen Guohua, et al., 1980. Determination of specific gravity of sea water from the estuary of the Changjiang River.Acta Oceanologica Sinica 2(4): 86–92. (in Chinese with English abstract)

Park, K., 1966. Columbia River plume identification by specific alkalinity.Limn. Oceanogr. 11 (1): 118–120.

Poisson, A., Lobel, J. and Brunet, C., 1980. Influence of local variations in the ionic ratios on the density of seawater in the St. Lawrence area.Deep-sea Res. 27 (10A): 763–781.

Riley, J. P. and Skirrow, G., 1974. Chemical Oceanography Vol. 2 (translated by Liu Guang et al, in 1982). China Ocean Press, pp. 446–451. (in Chinese)

UNESCO, 1981. Tenth report of the Joint Panel on Oceanographic Tables and Standards.UNESCO Tech Paper in Mar. Sci. 36: 17–21.

浏览量

Downloads

CSCD

文章被引用时，请邮件提醒。

Submit

工具集

关联资源

Physical processes causing the formation of hypoxia off the Changjiang estuary after Typhoon Chan-hom, 2015

The distribution patterns of bacteria, ATP and the relations with respiration rates and phytoplankton in the Changjiang Estuary and its adjacent East China Sea

The removal of Zn, Cd, Pb and Cu in the Changjiang estuary

Background study on non-residual phase of elements in Changjiang and Huanghe Estuarine sediments

Study of red tide prediction model for the Changjiang Estuary