冲绳海槽南部7000cal.yr BP以来冬季海水表层温度的重建  

Reconstruction of the winter sea-surface temperature in the southern Okinawa Trough since 7000cal.yr BP

作　　者：何晋娜[1] 

机构地区：[1]太原师范学院地理科学学院,山西晋中030619

出　　处：《河北省科学院学报》2016年第1期43-47,共5页Journal of The Hebei Academy of Sciences

摘　　要：通过对冲绳海槽南部MD05-2908孔中的硅藻进行鉴定分析,利用已有的西太平洋现代硅藻-环境变量数据库构造硅藻-温度转换函数,由硅藻-温度转换函数重建冬季海水表层温度。结果表明：7000～4700cal.yr BP期间冬季海水表层温度较低,4700cal.yr BP之后冬季海水表层温度波动上升。具体变化过程可分为2个寒冷阶段（6800～4700cal.yr BP和3800～1600cal.yr BP）和2个温暖阶段（4700～3800cal.yr BP和1600～0cal.yr BP）呈现冷、暖交替的特点。最后,与相关孔的温度进行了对比分析。Diatoms of core MD05-2908 in the southern Okinawa Trough are identified.The diatom-temperature transfer function,based on the established modern database of diatom-environment in the western Pacific,is used to reconstruct the winter sea-surface temperature.The results show that SSTw is low during 7000～4700cal.yr BP,and rises with fluctuations after 4700 cal.yr BP.The SSTw record can specifically be divided into four stages,with alternating spells of warmth and cold,including two cold periods（6800～4700cal.yr BP and 3800～1600cal.yr BP）and two warm periods（6800～4700cal.yr BP and 3800～1600cal.yr BP）.Lastly,the results have some comparison with correlation temperature.

关 键 词：冲绳海槽南部 硅藻-温度转换函数 冬季海水表层温度(SSTw) 

分 类 号：P736.22[天文地球—海洋地质]