南黄海陆架沉积物颜色反射率的初步研究  

A Preliminary Study on the Sediment Color Reflectance in the Southern Yellow Sea Shelf Area

作　　者：王昆山[1] 石学法[1] 王国庆[1] 

机构地区：[1]国家海洋局第一海洋研究所

出　　处：《海洋科学进展》2006年第1期30-38,共9页Advances in Marine Science

基　　金：国家自然科学基金项目--黄海沉积物光性标型特征及其指示意义(49976018);国家海洋局青年基金项目--南黄海沉积物颜色反射率的分布特征及其指示意义(2004302)

摘　　要：利用Minolta CM-2002光谱光度计，对南黄海陆架136个短柱样20-25cm段的沉积物进行了颜色反射率数据测量。描述了8个应用较广的光性参数在研究区的分布并进行聚类分区，给出了部分各区沉积物的颜色反射率数据。结合同一样品的粒度、化学元素、磁化率等资料的初步分析，结果表明，a^＊，a^＊／b^＊，反射率re555nm和re675nm的一阶导数对沉积物氧化还原的相对强度和物质来源相对敏感，地质意义较为明确，并可判明研究区的3种物质来源及方向，即长江口方向、现代黄河物质来源以及研究区东南方向的生物物质来源。The Minolta CM-2002 spectrophotometer was used to measure the color reflectance data of sediments from the 20 to 25 cm section of 136 gravity cores collected from the southern Yellow Sea shelf area. In this paper, the distributions of eight spectral paramenters in the study area are described, the cluster sub-division of these parameters is made, and the sediment color reflectance data in some areas are given. The comprehensive analysis of sediment color reflectance, grain size, chemical composition and magnetic susceptibility data was made, and it is shown from the analysis results that parameters a^＊ and a^＊/b^＊ and first derivatives of reflectances re555nm and re675nm are sensitive to the sediment redox intensity and the material source, respectively and the analysis results can be used to infer three sediment sources in the study area, i. e. , the sediment sources from the Changjiang River estuary and the modern Yellow River delta and the biogenic material from the southeastern study area.

关 键 词：南黄海 沉积物 颜色反射率 

分 类 号：P736.4[天文地球—海洋地质] P575.4[天文地球—海洋科学]