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松花湖沉积物~(137)Cs和~(210)Pb分布及沉积速率
引用本文:郝立波,刘海洋,陆继龙,孙淑梅,潘志恒,赵玉岩.松花湖沉积物~(137)Cs和~(210)Pb分布及沉积速率[J].吉林大学学报(地球科学版),2009,39(3).
作者姓名:郝立波  刘海洋  陆继龙  孙淑梅  潘志恒  赵玉岩
作者单位:1. 吉林大学,地球探测科学与技术学院,长春,130026
2. 吉林省地质调查院,长春,130061
基金项目:中国地质调查局研究项目 
摘    要:松花湖沉积物柱心中存在3个明显的137Cs蓄积峰,分别是37 cm处的1964年蓄积峰、27 cm处的1971年蓄积峰和23 cm处的1975年蓄积峰.利用137Cs核素1964年和1975年对应蓄积峰计算的沉积速率分别为0.86 cm/a和0.71 cm/a.采用210Pb计年的常量初始浓度模式(CIC)计算的平均沉积速率为0.71 cm/a,两者估算的沉积速率吻合.松花湖1964-1975年间的沉积速率明显高于1975-2006年间的沉积速率.137Cs和210Pb计年方法的结合有助于提高沉积速率估算的准确性.

关 键 词:沉积速率  松花湖

Vertical Distribution of ~(137)Cs and ~(210)Pb and Sedimentation Rate in Songhua Lake
HAO Li-bo,LIU Hai-yang,LU Ji-long,SUN Shu-mei,PAN Zhi-heng,ZHAO Yu-yan.Vertical Distribution of ~(137)Cs and ~(210)Pb and Sedimentation Rate in Songhua Lake[J].Journal of Jilin Unviersity:Earth Science Edition,2009,39(3).
Authors:HAO Li-bo  LIU Hai-yang  LU Ji-long  SUN Shu-mei  PAN Zhi-heng  ZHAO Yu-yan
Institution:HAO Li-bo1,LIU Hai-yang1,LU Ji-long1,SUN Shu-mei2,PAN Zhi-heng2,ZHAO Yu-yan11.College of Geo-Exploration Science , Technology,Jilin University,Changchun 130026,China2.Jilin Geological Survey Institute,Changchun 130061,China
Abstract:Three distinct 137Cs peaks formed at 1964,1971 and 1975,respectively.are recognized in the sediment core of Songhua Lake.Using 137Cs depths recorded in 1964 and 1975 as the datum levels,the sedimentation rate are calculated to be 0.86 cm/a and 0.71 cm/a,respectively.The average sedimentation rate is 0.71 cm/a calculated by CIC model of 210Pb dating,which showed a good agreement with the result calculated by the 137Cs.The sedimentation rate from 1964 to 1975 is higher than those from 1975 to 2006 in Songhua ...
Keywords:210Pb  137Cs
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