太平洋和普里兹湾及邻近海域表层海水的氧同位素组成  

OXYGEN ISOTOPIC FEATURES IN SURFACE LAYER OF PACIFIC,SOUTHERN OCEAN AND PRYTZ BAY,ANTARCTIC

作　　者：洪阿实[1] 李平[2] 彭子成[1] 王明亮[1] 

机构地区：[1]国家海洋局第三海洋研究所,厦门361005 [2]中国科学技术大学地球与空间科学系,合肥230026

出　　处：《海洋通报》1993年第4期49-54,共6页Marine Science Bulletin

摘　　要：本文报道了中国第六次南极考察队在南大洋和环球考察期间采集到的太平洋和普里兹湾及邻近海域表层海水的氧同位素记录。测定结果反映了开放洋区氧同位素组成的均匀性特征以及δ^(18)O值呈现同高纬度地带低于低纬度地带的同位素纬度效应,讨论了表层海水δ^(18)O值与盐度的相互关系。普里兹湾及邻近海域表层水的δ^(18)O平均值为-1. 41,反映了南极冰架入海融化水的稀释作用。Reported in this paper were the records of oxygen itosope of samples of surface water of the Pacific, Southern Ocean and Prytz Bay of Antarctic and the waters around the bay during China Sixth Antarctica Research Expedition from November 1989 to March 1990. The relationship between °18O value and salinity in surface layer was analysed. The composition of the oxygen isotope in the open ocean was homogeneous. °18O value in high latitude zone was lower than in low latitude zone due to latitude isotopic effect. The average °18O value of the surface water in Prytz Bay and adjacent waters was -1. 41, which indicated the dilution in the area by input of shelf meltwater.

关 键 词：氧同位素 纬度效应 海水化学 

分 类 号：P734.21[天文地球—海洋化学]