A sedimentological approach to P-A relationships for tidal inlet systems: an example from Yuehu Inlet, Shandong Peninsula, China
Tóm tắt
Power-law relationship between tidal prism (P) and the cross-sectional area of the entrance channel (A) is applicable to assess the equilibrium conditions of a tidal inlet system. The classic method of determining P-A relationships proposed by O’Brien depends on datasets from multi-tidal inlet systems, which has shown some limitations and is unable to assess equilibrium of a single tidal inlet. This paper focuses on establishing a new P-A relationship for a single tidal inlet. Our experimental result shows that in order to maintain the status, power n should be > 1, implying that the inlet width will narrow and current speed within the entrance will increase as tidal prism becomes smaller. A possible explanation for power n <,1.0, as many researchers argued before, is that the influence of tidal prism has been exaggerated. Meanwhile, the magnitude of coefficient C is dependent on many factors such as longshore drift, freshwater discharge, etc, resulting in a wide range of variation of C. It should be pointed out that P-A relationship given by the sediment dynamical approach is still a representative of average status for tidal inlets in equilibrium. As tide, wave, freshwater discharge and tidal inlet morphology change with time, actual P-A relationships will fluctuate also. The problems that need to be solved when applying sediment dynamic methods to P-A relationships include the cross-sectional distribution pattern of tidal current speeds in the entrance channel, the relationship between the tidal current and the tidal water level at the entrance, and the calculation of the ratio of width to depth. This paper will establish a sediment dynamical approach of P-A relationship for a single tidal inlet. The results are tested for P-A relationships of Yuehu Inlet, a small inlet-lagoon system located in Shandong Peninsula, China.
Tài liệu tham khảo
citation_title=Tidal inlets and tidal deltas; citation_inbook_title=Coastal Sedimentary Environments; citation_publication_date=1985; citation_pages=445-532; citation_id=CR1; citation_author=J. C. Boothroyd; citation_publisher=Springer-Verlag
citation_title=Stability of tidal inlets — theory and engineering; citation_publication_date=1978; citation_id=CR2; citation_author=P. Bruun; citation_publisher=Elsevier Scientific Publishing Company
citation_title=China’s Coastal Embayments (V.3: Northern and Eastern Shandong Peninsula); citation_publication_date=1991; citation_id=CR3; citation_publisher=China Ocean Press
citation_journal_title=Marine Science; citation_title=
P-A relationships for tidal inlets along the coast of East China Sea; citation_author=S. Gao; citation_volume=12; citation_issue=1; citation_publication_date=1988; citation_pages=15-19; citation_id=CR4
citation_journal_title=Estuarine, Coastal and Shelf Science; citation_title=Tidal inlet equibibrium, in relation to cross-sectional area and sediment transport patterns; citation_author=S. Gao, M. Collins; citation_volume=38; citation_publication_date=1994; citation_pages=157-172; citation_doi=10.1006/ecss.1994.1010; citation_id=CR5
citation_journal_title=Coastal Engineering; citation_title=Tidal inlet stability in response to hydrodynamic and sediment dynamic conditions; citation_author=S. Gao, M. Collins; citation_volume=23; citation_publication_date=1994; citation_pages=61-80; citation_doi=10.1016/0378-3839(94)90015-9; citation_id=CR6
citation_journal_title=Marine Science; citation_title=Factors determining the coefficients of C and n for P-A relationships of tidal inlets; citation_author=S. Gao, H. X. Zhang; citation_volume=21; citation_issue=4; citation_publication_date=1997; citation_pages=23-27; citation_id=CR7
citation_journal_title=Journal of Sedimentary Petrology; citation_title=An assessment and calibration of formulations for Bagnold’s bedload equation; citation_author=J. Hardisty; citation_volume=53; citation_publication_date=1983; citation_pages=1007-1010; citation_id=CR8
citation_journal_title=Sedimentary Geology; citation_title=General morphology and sediment patterns in tidal inlets; citation_author=M. O. Hayes; citation_volume=26; citation_publication_date=1980; citation_pages=139-156; citation_doi=10.1016/0037-0738(80)90009-3; citation_id=CR9
citation_title=Bedform distribution on tidal inlets in the Chatham Harbor Estuary, Cape Cod, Massachusetts; citation_inbook_title=Estuarine Research, Vol 2, Geology and Engineering; citation_publication_date=1975; citation_pages=235-252; citation_id=CR10; citation_author=A. C. Hine; citation_publisher=Academic Press
Jarrett J T (1976). Tidal prism-inlet area relationship. GITI (General Investigation of Tidal Inlets) Report 3, Department of the Army Corps of Engineers
citation_journal_title=Sedimentology; citation_title=Threshold of sediment motion under unidirectional currents; citation_author=M. C. Miller, I. N. McCave, P. D. Komar; citation_volume=24; citation_publication_date=1977; citation_pages=507-527; citation_doi=10.1111/j.1365-3091.1977.tb00136.x; citation_id=CR12
citation_journal_title=Civil Engineering; citation_title=Estuarine tidal prism related to entrance areas; citation_author=M. P. O’Brien; citation_volume=1; citation_publication_date=1931; citation_pages=738-739; citation_id=CR13
citation_journal_title=J Watway Harbor Div; citation_title=Equilibrium flow areas of inlets on sandy coasts; citation_author=M. P. O’Brien; citation_volume=95; citation_issue=WW1; citation_publication_date=1969; citation_pages=43-52; citation_id=CR14
citation_title=Tidal basin morphology in the Schleswig-Holstein Wadden Sea Area related to changing tidal conditions; citation_inbook_title=German Geographical Coastal Research — The Last Decade; citation_publication_date=1998; citation_pages=63-93; citation_id=CR15; citation_author=F. Spiegel; citation_author=H. Klug; citation_publisher=Institute for Scientific Co-operation
citation_journal_title=Journal of Sedimentary Research; citation_title=Modification to the Hardisty equation, regarding the relationship between sediment transport rate and grain size; citation_author=Y. P. Wang, S. Gao; citation_volume=71; citation_issue=1; citation_publication_date=2001; citation_pages=118-121; citation_doi=10.1306/032100710118; citation_id=CR16
citation_journal_title=Marine Geology and Quaternary Geology; citation_title=The calculation of alongshore silt discharge rates and evolution development of sandspit in the Rongcheng Bay, Shandong Peninsula; citation_author=W. H. Wang, Z. Y. Zhuang, X. L. Li; citation_volume=20; citation_issue=4; citation_publication_date=2000; citation_pages=31-35; citation_id=CR17
citation_journal_title=Proceedings of Coastal and Port Engineering in Developing Countries; citation_title=Analysis of P-A correlationship of tidal inlets along the coasts of South China; citation_author=Q. M. Zhang; citation_volume=1; citation_publication_date=1987; citation_pages=412-422; citation_id=CR18
citation_journal_title=China Ocean Engineering; citation_title=Relationships between tidal prism and throat area of tidal inlets along Yellow Sea and Bohai Sea coasts; citation_author=R. S. Zhang, Y. P. Wang; citation_volume=10; citation_issue=2; citation_publication_date=1996; citation_pages=229-238; citation_id=CR19