摘要
阐明渤海环流和潮余流的分布特征及其与沉积物输运之间的关系。本文根据80年代以来的实测海流资料得到：辽东湾的环流是顺时针向的；黄河三角洲外海存在着一支流向东北偏北向流，与辽东湾西部的东北向海流相接；渤海湾内的环流北部为反时针向，南部为顺时针向回转的双环结构。上述环流趋势与渤海沉积物分布相一致。渤海沿岸主要入海河流的特征矿物分布正是上述环流存在的最好佐证。文中进一步讨论了潮余流分布特征及其对渤海环流的贡献。
Distribution characteristics of circulations and tidal residual currents and theirrelations to sediment transport in the Bohai Sea are discussed, and numerical modelsof circulations in this sea at present are also reviewed. Current data measured fromthe eighties at the oil platforms and otlier places show that the circulation in Liao-dong Bay is clockwise, that in the off shore areas of the Huanghe River Delta isa current directed northeast by north and joined to the northeastward current inthe western part of Liaodong Bay and that the circulations in the Bohai Bay areanticlockwise in the northern part and clockwise in the southern part.Most nume-rical models of the Bohai Sea circulations at present do not conform to the aboveresults.The Eulerian and Langrangian residual currents are also discussed on thebasis of results of numerical model of tide and tidal current. It was found that theEulerian and Langrangian tidal residual current form a large clockwise circulationin the central part of the Bohai Sea and Liaodong Bay.This circulation is veryconsistent with the circulation pattern from the Huanglie River Delta to LiaodongBay and means that tlie tidal residual currents contribute importantly to the Bohaicirculations. It is further pointed out, for the first time that the circulations ofBohai Sea are consistent with the sediments distribution in the Bohai Sea.In fast,the distribution of typical minerals of the sediment discharge from main rivers flo-wing into the Bohai Sea is the best evidence for existence of Bohai circulationgiven above.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
1995年第5期466-473,共8页
Oceanologia Et Limnologia Sinica
基金
国家自然科学基金!49140015
关键词
环流
余流
沉积物
输运
渤海
潮流
Circulations
Tidal residual currents
Transport of sedimentation
Bohai Sea
