Natural radionuclides in volcanic activity

被引：9
|
作者：
Sato, J [1 ]
机构：
[1] Meiji Univ, Sch Sci & Technol, Dept Ind Chem, Tama Ku, Kawasaki, Kanagawa 2148571, Japan
来源：
APPLIED RADIATION AND ISOTOPES | 2003年 / 58卷 / 03期
关键词：
Rn-222; Pb-210; Pb-212; volcanic eruption; releasing efficiency; atmospheric concentration;
D O I：
10.1016/S0969-8043(02)00317-2
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Natural radionuclides of Ra-222, Pb-210 and Pb-212 present in the magma are emitted during the eruption of volcanoes. Depletion of Rn-222 in pumices and in lava showed that significant amounts of Rn-222 were released from erupting magmas. Atmospheric Pb-210 originating from the 1991 eruption of Mt. Pinatubo was detected in Japan and in Korea as a temporal increase in the atmospheric concentration after the eruption. Atmospheric Pb-212 originating from the 2000 eruption of Mt. Miyake-jima was also detected as an abrupt rise in atmospheric concentration after the event. (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：393 / 399
页数：7
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