南海长链烯酮化合物的检测及U37^k值的应用  

Detection of long chain alkenone compounds and applicationof values in South China Sea

作　　者：龚庆杰[1,2] 吴良基[1,2] 吴时国 罗又郎[1,2] 张干[1,2] 

机构地区：[1]中国科学院南海海洋研究所 [2]中国科学院广州地球化学研究所

出　　处：《地球化学》1999年第1期51-57,共7页Geochimica

基　　金：中国科学院广州地球化学研究所有机地球化学国家重点开放研究实验室基金

摘　　要：首次系统地在南海大面积站位中检测出长链烯酮化合物。通过长链烯酮指标Ｕ３７ｋ与实测表层海水温度（ＳＳＴ）的对比研究，发现海洋沉积物样品在室温下长期（１７ａ）密封保存，长链烯酮指标Ｕ３７ｋ值无明显变化。Ｕ３７ｋ值在南海海区指示的表层海水温度与季节有关，主要反映秋、冬两季，即１０月至次年３月间的ＳＳＴ。Long chain alkenone compounds has been first detected in large area of South Ch ina Sea(SCS). It is founded that there is no evident change for the value of wh en the marine sediments have been sealed and kept in room temperature for a long time (17 a) by comparing the value with the measured surface sea temperature o n the same spot. The value of sediments from SCS has a close relationship to th e observed SST in autumn and winter, i.e. from October to the nest March.

关 键 词：沉积物 长链烯酮 U37^k 南海 海水温度 表层水温 

分 类 号：P736.41[天文地球—海洋地质] P731.11[天文地球—海洋科学]