应用海洋学学报
應用海洋學學報
응용해양학학보
Journal of Applied Oceanography
2015年
3期
326-333
,共8页
海洋地质学%粒度参数%粒径趋势%Q 型聚类分析%R 型因子分析%沉积物概率曲线%泉州湾
海洋地質學%粒度參數%粒徑趨勢%Q 型聚類分析%R 型因子分析%沉積物概率麯線%泉州灣
해양지질학%립도삼수%립경추세%Q 형취류분석%R 형인자분석%침적물개솔곡선%천주만
marine geology%grain size parameter%grain size transport trend%Q cluster%R factors%probability curves of sediment%Quanzhou Bay
本文利用福建省泉州湾海域采集的70个表层沉积物样品,分析了泉州湾表层沉积物粒度参数的平面分布特征及输运趋势。对沉积物的粒度参数进行了 Q 型聚类分析,开展了沉积物曲线特征在横向上的分布研究,并针对沉积物不同粒级组分对沉积物来源做了 R 型因子分析。粒度分析结果表明,不同粒度参数(平均粒径、分选系数、偏态、峰态)在横向上具有不同的变化特征,很大程度上受到潮汐水流的影响,同时入海河口、岛屿周边和局部凸凹岸都会成为其影响因素。沉积物输运趋势分析结果显示,沉积物主要来源于晋江和洛阳江的输入、研究区南侧海岸侵蚀物向北运移后的沉积及外海海流的带入;Q 型聚类分析把沉积物分为两群四类,能很好地反应出沉积物粒度概率曲线的变化特征;R 型因子分析进一步探讨了沉积物粒度特征可能的影响因素,以陆源碎屑特征和水动力变化影响为主,其次是生物碎屑沉积和人工采砂。
本文利用福建省泉州灣海域採集的70箇錶層沉積物樣品,分析瞭泉州灣錶層沉積物粒度參數的平麵分佈特徵及輸運趨勢。對沉積物的粒度參數進行瞭 Q 型聚類分析,開展瞭沉積物麯線特徵在橫嚮上的分佈研究,併針對沉積物不同粒級組分對沉積物來源做瞭 R 型因子分析。粒度分析結果錶明,不同粒度參數(平均粒徑、分選繫數、偏態、峰態)在橫嚮上具有不同的變化特徵,很大程度上受到潮汐水流的影響,同時入海河口、島嶼週邊和跼部凸凹岸都會成為其影響因素。沉積物輸運趨勢分析結果顯示,沉積物主要來源于晉江和洛暘江的輸入、研究區南側海岸侵蝕物嚮北運移後的沉積及外海海流的帶入;Q 型聚類分析把沉積物分為兩群四類,能很好地反應齣沉積物粒度概率麯線的變化特徵;R 型因子分析進一步探討瞭沉積物粒度特徵可能的影響因素,以陸源碎屑特徵和水動力變化影響為主,其次是生物碎屑沉積和人工採砂。
본문이용복건성천주만해역채집적70개표층침적물양품,분석료천주만표층침적물립도삼수적평면분포특정급수운추세。대침적물적립도삼수진행료 Q 형취류분석,개전료침적물곡선특정재횡향상적분포연구,병침대침적물불동립급조분대침적물래원주료 R 형인자분석。립도분석결과표명,불동립도삼수(평균립경、분선계수、편태、봉태)재횡향상구유불동적변화특정,흔대정도상수도조석수류적영향,동시입해하구、도서주변화국부철요안도회성위기영향인소。침적물수운추세분석결과현시,침적물주요래원우진강화락양강적수입、연구구남측해안침식물향북운이후적침적급외해해류적대입;Q 형취류분석파침적물분위량군사류,능흔호지반응출침적물립도개솔곡선적변화특정;R 형인자분석진일보탐토료침적물립도특정가능적영향인소,이륙원쇄설특정화수동력변화영향위주,기차시생물쇄설침적화인공채사。
A total of 70 surface sediment samples from Quanzhou Bay,Fujian Province,were analyzed for the hori-zontal distribution of grain size and its transport trends.Analysis of Q cluster for the grain size parameter and for the distribution of sediment curve characteristics on the transverse were carried out.Besides,analysis of R factors was conducted for the sediment provenance according to the size compositions.The results of grain size analysis show that different grain size parameters (Mean grain size,Coefficients of sorting,Skewness and Kurtosis)have different characteristics horizontally,which are influenced by tidal flows,estuaries,surrounding islands and local convex-concave shores.The trend of grain size transport shows that the main sources of sediments were from inputs of Jin-jiang river,Luoyang river and from the northward moving sedimentation due to the south coastal erosion and the off-shore input by the currents.The sediments are categorized into 4 groups of 2 by Q type clustering,which coincide well the characteristics of sediment grain size probability curves.This paper further discusses the factors possibly influencing the sediment granularity characteristics with R factor analysis.It shows that the primary influences are terrigenous clastic and hydrodynamic changes and the second,bioclast deposits and sand mining.