引用本文:	于银亭,李培泉,吴润,孟伟,刘玉生,邹兰.昆明滇池沉积速率的测定.海洋与湖沼,1996,27(1):41-45.

【打印本页】【HTML】【下载PDF全文】【查看/发表评论】【下载PDF阅读器】【关闭】

过刊浏览高级检索

本文已被：浏览 2602次下载 1630次	码上扫一扫！
字体:加大+\|默认\|缩小-
昆明滇池沉积速率的测定
于银亭¹, 李培泉¹, 吴润², 孟伟³, 刘玉生³, 邹兰³
1.中国科学院海洋研究所青岛266071;2.青岛大学化学系青岛266071;3.中国环境科学院北京100012

摘要:

于1989年12月采用²¹⁰Ph法测定昆明滇池（草海和外海）两个柱样的沉积速率，其值分别为0.29cm/a和0.28cm/a，平均值约为0.29cm/a。在沉积柱12cm以上，由于人为影响，其沉积速率没有规律，估计约有30—40年的历史。在12cm以下，²¹⁰Pb_ex随深度的变化明显地表现出规律性，以0.29cm/a的速率计算，从12cm到40cm这一段大约有90年的沉积历史。

关键词: 沉积速率 ²¹⁰Pb法示踪体衰变沉积柱

DOI：

分类号:

基金项目:中国环科院资助!890450

附件

DETERMINATIONS OF SEDIMENTATION RATES IN KUNMING'S DIANCHI LAKE

Yu Yinting¹, Li Peiquan¹, Wu Run², Meng Wei³, Liu Yusheng³, Zou Lan³

1.Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071;2.Department of Chemistry, Qingdao University, Qingdao 266071;3.Chinese Research Academy of Enviromental Science, Beijing 100012

Abstract:

The sedimentation rates of two sediment cores (Caohai and Waihai) in Kunming's Dianchi Lake determined by ²¹⁰Pb dating in 1989 are 0.29 cm/a and 0.28 cm/a respectively, and not regular above 12 cm at the two cores due to anthropengenic influence. The sedimentation rates were calculated based on the ²¹⁰Pb radioactivity’s very regular variation under 12cm of the cores. The sedimentary history was estimated to be about 90 years from 12cm to 40cm of the cores based on the sedimentary rate of 0.29 cm/a.

Key words: Sedimentation rates, ²¹⁰Pb dating method, Tracer, Decay, Sediment core