COMPARISON OF VELOCITY PROFILES ASSOCIATED WITH TIDAL ACCELERATION AND DECELERATION OVER INTERTIDAL FLATS

DU Xiao-qin; GAO Shu; WANG Ya-ping

Marine Geology & Quaternary Geology > 2006 > 26(5): 37-44.

DU Xiao-qin, GAO Shu, WANG Ya-ping. COMPARISON OF VELOCITY PROFILES ASSOCIATED WITH TIDAL ACCELERATION AND DECELERATION OVER INTERTIDAL FLATS[J]. Marine Geology & Quaternary Geology, 2006, 26(5): 37-44.

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COMPARISON OF VELOCITY PROFILES ASSOCIATED WITH TIDAL ACCELERATION AND DECELERATION OVER INTERTIDAL FLATS

Ministry of Education Key Laboratory of Coast and Island Development, Nanjing University, Nanjing 210093, China

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Received Date: January 14, 2006
Revised Date: April 16, 2006

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Abstract

Since the intertidal flats at Dafeng, Jiangsu Province are characterized by shallow water, strong tidal currents and waves, the whole depth of flow can be regarded as the boundary layer, i.e. the velocity profile is logarithmic structure. However, it may depart from the usual logarithmic form in an accelerating or deceleration tidal flow and will result in tremendous error if the logarithmic von Karmen-Prandtl equation is used to calculate the parameters. Current speeds and turbidities have been measured by using MIDAS-400 at various heights over the tidal flats. The u-lnz regression analysis and the internal consistency analysis were adopted and a realistic logarithmic velocity profile was established by modifying von Karman-Prandtl equation. The analysis indicates that the parameters are associated not only with the acceleration or deceleration of currents but also with sand ripples. The changes of boundary layer parameters are in negative correlation with the characteristic acceleration.
- intertidal flat,
- bottom boundary layer,
- current velocity profile,
- tidal accelerating phase,
- Jiangsu Province

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References

[1]	汪亚平,高抒,贾建军. 海底边界层水流结构及底移质搬运研究进展[J]. 海洋地质与第四纪地质,2000,20(3):101-106. [WANG Ya-ping, GAO Shu, JIA Jian-jun. Flow structure in the marine boundary layer and bedload transport:a review[J].Marine Geology and Quaternary Geology,2000,20(3):101-106.]
[2]	Heathershaw A D. Measurements of turbulence in the Irish Sea benthic boundary layer[C]//The benthic boundary layer. New York and London:Plenum Press, 1976:11-31.
[3]	李占海,高抒,柯贤昆,等. 江苏大丰潮间带粉沙滩的潮流边界层特征[J]. 海洋通报, 2003,22(2):1-8. [LI Zhan-hai,GAO Shu,KE Xian-kun, et al. Tidal-induced boundary layer properties of the silt flat at Dafeng, Jiangsu Province, Eastern China[J]. Marine Science Bulletin, 2003, 22(2):1-8.]
[4]	Collins M B, KE Xian-kun, GAO Shu. Tidally-induced flow structure over intertidal flats[J]. Estuarine, Coast and Shelf Science, 1998, 46:233-250.
[5]	汪亚平,高抒,贾建军. 浪流联合作用下潮滩沉积动力过程的高分辨率数据采集与分析[J]. 科学通报,2006,51(3):339-348. [WANG Ya-ping, GAO Shu, JIA Jian-jun. High-resolution data collection for analysis of sediment dynamic processes associated with combined current-wave action over intertidal flats[J]. Science Bulletin, 2006, 51(3):339-348.]
[6]	WANG Ya-ping, GAO Shu, KE Xian-kun. Observations of boundary layer parameters and suspended sediment transport over the intertidal flats of northern Jiangsu,China[J]. Acta Oceanologica Sinica,2004,23(3):437-448.
[7]	Soulsby R L, Dyer K R. The form of the near-bed velocity profile in a tidally accelerating flow[J]. Journal of Geophysical Research, 1981,86(C9):8067-8074.
[8]	任美锷. 中国淤泥质潮滩沉积研究的若干问题[J]. 热带海洋,1985,4(2):6-14. [REN Mei-e. A study on sedimentation of tidal mud flats of China[J].Tropic Oceanology,1985,4(2):6-14.]
[9]	张忍顺,陈才俊. 江苏岸外沙洲演变与条子泥并陆前景研究[M]. 北京:海洋出版社,1992:124.[ZHANG Ren-shun, CHEN Cai-jun. Study of the evolution of Jiangsu offshore sandbanks and the prospects for Tiaozini sandbanks merging into land[M].Beijing:China Ocean Press,1992:49-50. ]
[10]	ZHANG Ren-shun. Suspended sediment transport processes on tidal mud flat in Jiangsu Province, China[J]. Estuarine Coast and Shelf Science, 1992, 35:225-233.
[11]	贾建军,汪亚平,高抒,等. 江苏大丰潮滩推移质输运与粒度趋势信息解译[J]. 科学通报,2005,50(21):1-10. [JIA Jian-jun, WANG Ya-ping, GAO Shu, et al. Interpreting grain-size trends associated with bedload transport on the intertidal flats at Dafeng, central Jiangsu Coast[J]. Science Bulletin, 2005, 50(21):1-10.]
[12]	钱宁,万兆惠. 泥沙运动力学[M].北京:科学出版社,2003:98-213.[QIAN Ning, WAN Zhao-hui. Dynamics of the Sediment[M].Beijing:Science Press,2003:98 -213.]
[13]	Soulsby R B. Dynamics of Marine Sands[M]. London:Thomas Telford Ltd., 1997:249.
[14]	KE Xian-kun, Collins M B, Poulos S E.Velocity structure and sea bed roughness associated with intertidal (sand and mud) flats and saltflats of the Wash,U.K.[J].Journal of Coastal Research,1994,10:702-715.
[15]	Bass J H. A flume study on the development and equilibrium morphology of current ripples in very fine sand[J].Sedimentology,1994,41:185-209.
[16]	Bass J H. An empirical model for the development and equilibrium morphology of current ripples in fine sand[J]. Sedimentology, 1999, 46:123-138.

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COMPARISON OF VELOCITY PROFILES ASSOCIATED WITH TIDAL ACCELERATION AND DECELERATION OVER INTERTIDAL FLATS