南极冰盖SO_4^(2-)浓度记录研究进展  

PROGRESS IN THE STUDIES OF SO_4^(2-) CONCENTRATIONS RECORDED IN ANTARCTIC ICE SHEETS

作　　者：张明军[1] 任贾文[2] 孙俊英[2] 效存德[2] 李忠勤[2] 秦大河[2] 

机构地区：[1]西北师范大学地理与环境科学学院,兰州730070 [2]中国科学院寒区旱区环境与工程研究所,兰州730000

出　　处：《极地研究》2004年第1期65-74,共10页Chinese Journal of Polar Research

基　　金：科技部国际合作重点项目 (批准号 :2 0 0 1CB71 1 0 0 3 );国家自然科学基金 (批准号 :40 0 71 0 2 5 );西北师范大学科技与知识创新工程项目 (NWNU KJCXGC 0 2 2 0 )资助

摘　　要：本文综述了南极冰盖雪冰中SO2 -4 的来源、SO2 -4 浓度记录的时空分布特征 ,特别对nss SO2 -4 记录的火山活动事件进行了概括与总结 ,反映了近年来南极雪冰中SO2 -4 记录的最新研究进展。南极冰盖雪冰中SO2 -4 来源的综述表明南极地区雪冰中的SO2 -4 主要来源于海盐、海洋生物和火山喷发三种。很多研究表明 ,用南极冰芯中记录的nssSO2 -4 可以恢复火山活动的历史 ,虽然对同一次火山活动 ,在取自南极不同地区的冰芯中 ,其浓度和沉积通量大不一样 ,然而 ,各次火山活动引起的硫酸根离子的沉积通量相对于Tambora火山的沉积通量的百分比在不同冰芯中却经常具有可比性 ,这使得利用冰芯中nssSO2 -4In this paper, the latest progress of the resources, the time and spatial changes of concentrations of SO 2- 4 in the firn and ice of Antarctic ice sheet have been reviewed. The review of SO 2- 4 resources shows that SO 2- 4 is mainly marine and biogenic as well as large volcanic eruptions in origin in Antarctica. The progress in the studies of volcanic eruptions recorded in the Antarctic ice cores has been given special attention. The summarizing of the studies indicates that the deposition differences for any eruption are expected to be high, but in order to obtain a better comparison among different events in a single core or among different cores, a relative deposition may be calculated for the Tambora eruption. Studies show that the volcanic nssSO 2- 4 flux ratio with respect to the Tambora eruption for different Antarctic ice cores can be comparable, which makes it possible to calculate the scale of past volcanic events using the fluxes of nssSO 2- 4 recorded in the ice cores of Antarctica.

关 键 词：南极冰盖 含硫化合物 热力学 SO^2- 

分 类 号：P343.6[天文地球—水文科学]