用活有孔虫分布指示三亚汊道外港潮流格局
On using living foraminifera distribution as indicator of general model of tidal current circulation in outer harbour of Sanya tidal inlet
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摘要: 由因子分析得知,海南岛三亚湾汊道外港海底分布有四个主因子活有孔虫群,它们分别代表海湾内水体、湖冲出半盐水水体、湾外内陆架水体及内陆架与海湾水相混的过渡水体.这些水体在潮汐作用下的运动、相互混合,可由各水体的有孔虫指示.由每个主因子因子得分最高的三个属种百分含量之和等值线图所指示的外港潮流循环格局,与海洋学研究所得的结果相当一致.利用有孔虫指示潮汐汊道潮流格局尚属首次尝试,这方法对海岸开发分析泥沙运动、污染物排放等有实践意义.Abstract: Based on Q-mode factor analysis, living foraminifera found in samples collected throughout outer harbour of Sanya tidal inlet of Hainan island can be divided into 4 principal factor foraminifera assemblages that should represent outer harbour water mass, brackish water mass flushing from lagoon, inner shelf water mass outside harbour, and muting water mass of outer harbour and inner shelf water masses separately. The moving and intermixing of these water masses under the control of the tide can be indicated by foraminifera in them. Contour maps of the sum of the percentage contents of the taxa associated with the three highest factor scores of each foraminifera assemblage show a good fit to tidal current circulation made in outer harbour derived from oceanographic studies. The method using living foraminifera distribution as indicators of tidal current circulation model in tidal inlet, which is applied for the first time, has a high potential for analysing sediment transport, poVution discharge and so on in developing the coast meources.
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Nigam R. Foraminiferal assemblages and their use as indicators of sediment movement; A study in the shelf region off Navapor, India. Continental Shelf Research, 1986, 5, 421-430 Coulbourn W T, Resig J M. Ort the use of foraminifera as sediment tracers in a Hawaiian Bay. Pacific Science, 1975, 29,99-115 Murray J W, Weston J F, Sturrock S. Sedimentary indicators of water movement in the western approaches to the English Channel. Continental Shelf Research, 1983, 1,339-352 Wang P and Murray J W. The use of foraminifera as indicators of tidal effects in estuarine deposits. Marine Geology, 1983,51, 239-250 Thomas F C and Schafer C T. Distribution and transport of some common foraminiferal species in the Minas Basin, eastern Canada. Journal of Foraminiferal Research, 1982, 12, 24-38 Douglas R G. Benthic foraminiferal ecology and paleoecology:review of concepts and methods. Foraminiferal Ecology and Paleoecology. Society of Economic Paleontologists and Mineralogists, 1979. 21-53 同济大学海洋地质系编著.古海洋学概论.上海:同济大学出版社,1989. 316 汪品先,章纪军,赵泉鸿等.东海底质中的有孔虫和介形虫.北京:海洋出版社,1988. 438 王颖,陈万里.三亚清海岸地貌的几个问题.海洋通报,1982, 1(3):37-45 Poag C W. Ecologic atlas of benthic foraminifera of the Gulf of Mexico. Hutchinson Ross Publishing Company. 1981,174 尤坤元.海南岛洋浦清和三亚湾底质中有孔虫的研究.南京大学学报(自然科学),1989, 25(3):174-184 王学仁.地质数据的多变量统计分析.北京:科学出版社,1982, 518 -
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