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Artificial Water Sediment Regulation Scheme Influences Morphology, Hydrodynamics And Nutrient Behavior In The Yellow River Estuary

Title: Artificial Water Sediment Regulation Scheme Influences Morphology, Hydrodynamics And Nutrient Behavior In The Yellow River Estuary.
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Name(s): Xu, Bochao, author
Yang, Disong, author
Burnett, William C., author
Ran, Xiangbin, author
Yu, Zhigang, author
Gao, Maosheng, author
Diao, Shaobo, author
Jiang, Xueyan, author
Type of Resource: text
Genre: Text
Date Issued: 2016-08
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Anthropogenic controls on water and sediment may play important roles in river system transformations and morphological evolution, which could further affect coastal hydrodynamics and nutrient behavior. We used geochemical tracers to evaluate the influence of an intentional large release of water and sediment during the so-called "Water Sediment Regulation Scheme" (WSRS) on estuarine morphology, hydrodynamics and nutrients in the Yellow River estuary, China. We discovered that there was a newly formed small delta in the river mouth after the 2013 WSRS. This new morphologic feature altered terrestrial material distribution patterns from a single plume to a two-plume pattern within the estuary. Our results show that the WSRS significantly influenced the study area in the following ways: (1) Radium and nutrient concentrations were significantly elevated (two to four times), especially along the two river outlets. (2) Estuarine mixing was about two times stronger during WSRS than before. Average aerial mixing rates before and during WSRS were 50 +/- 26 km(2) d(-1) and 89 +/- 51 km(2) d(-1), respectively. (3) Our data is consistent with P limitation and suggest that stoichiometrically based P limitation was even more severe during WSRS. (4) All river-derived nutrients were thoroughly consumed within one to two weeks after entry to near-shore waters. (5) The extent of the area influenced by terrestrial nutrients was two to three times greater during WSRS. Human influence, such as triggered by WSRS regulations, should thus be considered when studying biogeochemical processes and nutrient budgets in situations like the Yellow River estuary. (C) 2016 Elsevier B.V. All rights reserved.
Identifier: FSU_libsubv1_wos_000378953700008 (IID), 10.1016/j.jhydrol.2016.05.024 (DOI)
Keywords: bohai sea, china, coastal waters, delta, flushing rates, Fluxes, hydrodynamics, impact, Morphology, Nutrient, ocean, ra-224, Radium, radium isotopes, Water sediment regulation scheme, Yellow River estuary
Publication Note: The publisher's version of record is available at https://doi.org/10.1016/j.jhydrol.2016.05.024
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000378953700008
Owner Institution: FSU
Is Part Of: Journal of Hydrology.
0022-1694
Issue: vol. 539

Choose the citation style.
Xu, B., Yang, D., Burnett, W. C., Ran, X., Yu, Z., Gao, M., … Jiang, X. (2016). Artificial Water Sediment Regulation Scheme Influences Morphology, Hydrodynamics And Nutrient Behavior In The Yellow River Estuary. Journal Of Hydrology. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000378953700008