Salt Flux in a Partially Mixed Estuary with Varying River Discharge over a Spring-Neap Tide Cycle

Li Rong Yuan; Rong Li Chen; Cheng Lu

doi:10.4028/www.scientific.net/AMM.137.237

Paper Titles

Capillary Hysteresis Internal Variable Model of Unsaturated Soils
p.215

Numerical Analysis for Unsaturated Water Movement in Soil of Changing Bulk Density
p.221

Research on Hydraulic Characteristics of Cutthroat Flume in Irrigation District
p.227

Research on Numerical Analysis and Application of the Tailing Pond
p.232

Salt Flux in a Partially Mixed Estuary with Varying River Discharge over a Spring-Neap Tide Cycle
p.237

Simulation Analysis of Concrete Dam’s Joints Based on Elastic-Plastic Creep Model
p.243

The Calculation and Simulate Research of the Natural Frequency of Liquid Flow on Piping Networks of Multi-Pulse Sources
p.250

Lidar Measurements for Comparison of Atmospheric Aerosol Extinction and Scattering Properties over Lanzhou, China
p.256

Pollution and Potential Biological Toxicity Assessment Using Heavy Metals from Surface Sediments of Liangtan River, Chongqing, China
p.262

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 137Salt Flux in a Partially Mixed Estuary with...

Salt Flux in a Partially Mixed Estuary with Varying River Discharge over a Spring-Neap Tide Cycle

Abstract:

The mechanisms driving the salt flux in the Modaomen estuary were investigated using measurements from along-channel shipboard surveys over a spring-neap tide cycle. During the investigation, river discharge was controlled to increase sharply and then decrease gently. The measurement data were analyzed with composition method. The results show that exchange flow varied significantly over the spring–neap cycle, being weakest during middle tides and strongest during neap tides. It could be concluded that sub-tidal vertical shear dispersion, resulting from the estuarine exchange flow, is the dominant mechanism driving the salt flux since the salt flux resulting from vertical shear dispersion varies in amplitude by over an order of magnitude, which is close to two times as large as the variation of advective salt flux.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volume 137)

Pages:

237-242

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.137.237

Citation:

Cite this paper

Online since:

October 2011

Authors:

Li Rong Yuan, Rong Li Chen, Cheng Lu

Keywords:

Modaomen Estuary, Pearl River Delta, Salt Flux, Salt Intrusion

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] J. A. Lerczak, W. R. Geyer, R. J. Chant, Mechanisms driving the time-dependent salt flux in a partially stratified estuary, Journal of Physical Oceanography. 36 (2006)2296-2311.

DOI: 10.1175/jpo2959.1

Google Scholar

[2] J. H. Simpson, R. Vennell, A. J. Souza, The salt fluxes in a tidally-energetic estuary, Estuarine Coastal and Shelf Science. 52 (2001) 131-142.

DOI: 10.1006/ecss.2000.0733

Google Scholar

[3] M. M. Bowen, W. Geyer, Salt transport and the time-dependent salt balance of a partially stratified estuary, Journal of Geophysical Research-Oceans. 108(2003).

DOI: 10.1029/2001jc001231

Google Scholar

[4] Z. Yamin, C. Zishen, Salinity Transport of Mechanism in Internal Lingdingyang Firth of the Pearl River Mouth, Marine science Bulletin. 27 (2008) 29-34.

Google Scholar

[5] W. Shijun, H. Da, L. Chunchu, The Recent Evolution of Modaomen Estuary and its Effect on Flood Drainage, Marine Science Bulletin. 25 (2006) 22-26. (In Chinese).

Google Scholar

[6] H. Da, L. Chun-chu, W. Shi-jun, Study on evolutional processes of the sand bar in Modaomen estuary, Journal of Sediment Research. (2005)71-75. (In Chinese).

Google Scholar

[7] J. I. Liangwen, W. Chaoyu, R. Jie, Hydrologic characteristics and estuarine dynamic process during the dry season in Modaomen Estuary of the Pearl River, Advances in water Science. 17 (2006) 82-88. (In Chinese).

Google Scholar

[8] W. P. Gong, J. Shen, The response of salt intrusion to changes in river discharge and tidal mixing during the dry season in the Modaomen Estuary, China, Continental Shelf Research. 31 (2011) 769-788.

DOI: 10.1016/j.csr.2011.01.011

Google Scholar