热释光在南黄海、东海表层沉积物研究中的应用  

Application of Thermoluminescence to the Study on Surface Sediments from the Southern Yellow Sea and the East China Sea

作　　者：张伟滨[1] 魏建伟[1] 石学法[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2期181-187,共7页Advances in Marine Science

基　　金：国家自然科学基金项目--黄海沉积物热光性标型特征及其指示意义(49976018)

摘　　要：提出了海洋沉积物热释光的测量方法。对南黄海和东海350个表层沉积物样品进行了热释光测量,研究了它们的热释光强度和发光曲线特征,探讨了沉积物热释光强度与其他指标之间的关系,讨论了热释光作为海洋沉积物的一个研究参数的原理和可行性。研究发现,沉积物热释光强度与砂、粘土和平均粒径有很好的相关关系;根据发光曲线的特征对研究海区进行了分区,发光曲线有明显的区域特征,这与各区的沉积环境有关。因此,热释光特征有可能成为研究海洋沉积物和沉积环境的一个替代指标。A method for determining the thermoluminescence （TL） intensity of marine sediments is developed. The TL intensities and TL spectra of 350 surficial sediment samples from the southern Yellow Sea and the East China Sea were measured, the relationships between TL intensity and other paramenters of surficial sediment were studied, and the theory and feasibility for TL to be taken as a parameter of marine sediment were discussed. It is shown from the study results that the sediment TL intensity is well correlated with sand, clay and mean grain size. In this paper, the study area is divided into several subareas according to their TL carve characters, and the TL curve characters of subareas are related to their sedimentary environment. Therefore, the TL curve character might be taken as a proxy for studying the marine sediment and sedimentary environment.

关 键 词：海洋沉积物 热释光强度 发光曲线 南黄海 东海 替代指标 

分 类 号：P736.21[天文地球—海洋地质]