SPM transport in the Bohai Sea: field experiments and numerical modelling

The suspended particulate matter (SPM) concentration in the Bohai Sea, China, is measured during two cruises carried out from September to October 1998 and April to May 1999. The analysis of the in-situ data reveals two zones of high SPM concentration that can be attributed to Yellow River water as well as to resuspension. The exchange with water masses of the Yellow Sea leads to a reduction of the SPM concentration in the eastern and central part of the Bohai Sea. The field data also show that in the Bohai Sea the wind waves strongly influence the SPM concentrations. This explains the major part of the seasonal variation: the SPM concentration is higher in spring than in summer, which results from the seasonal variation of the wind. A 3D numerical SPM transport model is used in this study to simulate the conditions during two cruises that have been conducted in the frame of the project. The results show that the model can well reproduce the observed SPM concentrations in the Bohai Sea. The results also agree well with SeaWiFS satellite data taken during one of the cruises.

[1]  Tetsuo Yanagi,et al.  A numerical experiment on the sedimentation processes in the Yellow Sea and the East China Sea , 1995 .

[2]  T. Pohlmann,et al.  Currents and Transport in Water , 1994 .

[3]  F. P. Shepard.  Sediments of the Continental Shelves , 1932 .

[4]  Jan O. Backhaus,et al.  A semi-implicit scheme for the shallow water equations for application to shelf sea modelling , 1983 .

[5]  M. Ren,et al.  Sediment discharge of the Yellow River (China) and its effect on the sedimentation of the Bohai and the Yellow Sea , 1986 .

[6]  R. Reynolds,et al.  The NCEP/NCAR 40-Year Reanalysis Project , 1996, Renewable Energy.

[7]  J. Sündermann.  Circulation and contaminant fluxes in the North Sea , 1994 .

[8]  Jürgen Sündermann,et al.  A modelling study of SPM transport in the Bohai Sea , 2000 .

[9]  V. G. Samarin,et al.  U.S. Army coastal engineering research center , 1971 .

[10]  Hans C. Graber,et al.  Storm-Generated Surface Waves and Sediment Resuspension in the East China and Yellow Seas , 1989 .

[11]  M. Selim Yalin,et al.  Mechanics of sediment transport , 1972 .

[12]  Jan O. Backhaus,et al.  A three-dimensional model for the simulation of shelf sea dynamics , 1985 .

[13]  J. M. Martín,et al.  Actual flux of the Huanghe (yellow river) sediment to the Western Pacific ocean , 1993 .

[14]  H. Niino,et al.  SEDIMENTS OF SHALLOW PORTIONS OF EAST CHINA SEA AND SOUTH CHINA SEA , 1961 .

[15]  J. Milliman,et al.  Suspended matter in surface waters: influence of river discharge and of upwelling* , 1978 .