The 4700 aB.P. volcanic signal detected in Vostok BH8 ice core, Antarctica
The detailed electrical conductivity measurement (ECM), trace chemical compositions and microparticles concentration analysis are performed for BH8 ice core from the depth of 126.0m to 130.0m at Vostok Station. At depth 128.7m, a volcanic signal 4726 a B.P. is detected. The volcanic sulphate flux is 95.8 kg·km-2, sulphate peak concentration 1352.8 ng·g-1, duration time about 10.1 years, comparable with some well-known volcanic events. The results indicate that it seems to be a relatively large scale, long lasting volcanic signal with farther volcanic origin.
作 者： LIU Leibao KANG Jiancheng Jean R. Petit Jefferson C. Sim(o)es Martine De Angelis 作者单位： LIU Leibao(Polar Research Institute of China, Shanghai 200136, China;Institute of Environment and Biogeochemistry, Zhejiang University, Hangzhou 310027, China)KANG Jiancheng(Polar Research Institute of China, Shanghai 200136, China;Department of Geography, Shanghai Normal University, Shanghai 200234, China)
Jean R. Petit,Martine De Angelis(Laboratoire de Glaciologie et G(e)ophysique de l'Environnement, CNRS, BP 96, Saint Martin d'H(e)res, France)
Jefferson C. Sim(o)es(Laborat(o)rio de Pesquisas Ant(a)rticas e Glaciol(o)gicas, Instituto de Geoci(e)ncias, UFRGS, Av. Bento Gon(c)alves 9500,91501-970 - Porto Alegre, RS - Brazil)
刊 名： 科学通报（英文版） SCI 英文刊名： CHINESE SCIENCE BULLETIN 年，卷(期)： 2005 50(22) 分类号： P5 关键词： volcanic eruption ice core record Vostok Antarctica