广西典型海湾物质输运滞留时间研究A Numerical Simulation of Residence Time in Typical Gulf Substances in Guangxi
李谊纯,董德信,许铭本,牙韩争
摘要(Abstract):
为研究广西典型海湾物质输运的时间尺度,建立了钦州湾和铁山港湾水动力与物质输运数学模型,计算了钦州湾和铁山港湾物质输运的滞留时间和半交换周期,探讨了滞留时间随入海径流量的变化以及与半交换周期的关系。结果显示,钦州湾的滞留时间为413~595 h,半交换周期为148~178 h,铁山港湾的滞留时间为215~598h,半交换周期约为50 h,钦州湾和铁山港湾的滞留时间均随径流量增大而减小。铁山港的滞留时间在小流量情况下随径流量的变化显著,在大流量下随径流量变化较小,而钦州湾的滞留时间随径流量大致呈线性变化。钦州湾和铁山港的滞留时间和半交换周期之间尚无明确的函数关系,这反映了不同海域的水深、地形及径流与潮汐相互作用的差异性和复杂性。
关键词(KeyWords): 钦州湾;铁山港湾;滞留时间;数值模拟
基金项目(Foundation): 广西自然科学基金北部湾重大专项(2011GXNSFE018002,2012GXNSFEA053001)
作者(Author): 李谊纯,董德信,许铭本,牙韩争
参考文献(References):
- [1]Signell R P,Butman B.Modeling tidal exchange and dispersion in Boston Harbor[J].Journal of Geophysical Research,1992,97(15):1 591-1 606.
- [2]Signell R P,Geyer W R.Numerical simulation of tidal dispersion around a coastal headland[C]//Cheng R T.Residual Currents and Long-Term Transport in Estuaries and Bays,Lecture Notes on Coastal and Estuarine Studies,No.38.New York:Springer-Verlag,1990:210-222.
- [3]Shen J,Lin J.Modeling study of the influences of tide and stratification on age of water in tidal James River[J].Estuarine,Coastal and Shelf Science,2006,68:101-112.
- [4]Sheldon J E,Alber M.A comparison of residence time calculations using simple compartment models of the Altamaha River estuary,Georgia[J].Estuaries,2002,25(6B):1 304-1 317.
- [5]Delhez E J M,Heemink A W,Deleersnijder E.Residence time in a semi-enclosed domain from the solution of an adjoint problem[J].Estuarine,Coastal and Shelf Science,2004,61:691-702.
- [6]Delhez E J M,Deleersnijder E.Age and the time lag method[J].Continental Shelf Research,2008(28):1 057-1 067.
- [7]Takeoka H.Fundamental concepts of exchange and transport time scales in a coastal sea[J].Continental shelf research,1984,3(3):322-326.
- [8]蒋磊明,陈波,邱绍芳,等.钦州湾潮流模拟及其纳潮量和水交换周期计算[J].广西科学,2009,16(2):193-195.
- [9]高劲松,陈波,陆海生,等.钦州湾潮流场及污染物输运特征的数值模拟研究[J].广西科学,2014,21(4):345-350.
- [10]张卓,叶荣辉,卜春春.北海铁山港建港方案对铁山湾潮流泥沙的影响研究[J].水道港口,2009,30(6):402-407.
- [11]Leveque R J.双曲问题用的有限元法[M].北京:世界图书出版社,2003
- [12]李谊纯.瓯江下游河段污染物质滞留时间数值模拟研究[J].水道港口,2011,32(6);434-439.