摘要
用中国的历史文献来研究较早历史时期的火山喷发的气候效应,尤其是喷发持续时间长、过程复杂的冰岛式火山喷发的气候效应,是一项探索性的工作。本文主要探讨了-934 AD冰岛Eldgjá火山喷发在中国的气候效应,发现在Eldgjá火山喷发后,中国的气候变冷突出表现在93-～942 AD,初步估计,939/940 AD冬季洛阳开封一带相对于933-938 AD的降温幅度可达5℃-8℃。在北半球范围,Eldgjá火山喷发后的气候变冷集中在935-937 AD(峰值在935 AD)和939-942 AD(峰值在939-940 AD)两个时期。推测Eldgjá火山在长达3-8年的喷发过程中,可能于934-935 AD和938-939 AD前后各出现一个喷发的高潮。
It's explorary work to study the climatic impact of eruptions in early stage using Chinese histori cal records as grounds esp iceland eruption, which is complicated and long lasting. - 934 AD Eldgja Eruption is investigated. In China, drop in temperature appears to be in 939 - 942 AD after the Eldgia Eruption. This paper presents a rough estimate that compared with the mean winter temperature of 932/933 AD-937/938 AD, range of decrease in the winter of 939/940 is 5℃-8℃ in Luoyang-Kaifeng area. In Northern Hemisphere, the drop in temperature following the Eldgja Eruption concentrated in 935-937 AD and 939 - 942 AD. And peak values are found in 935 AD and 939 - 940 AD respectively. The Eldgja Eruption climaxed twice in 934 - 935 AD and 938-939 AD during the 3-8 years.
出处
《世界地质》
CAS
CSCD
2003年第3期214-225,共12页
World Geology
基金
国家重点基础研究发展规划(G1999043401)
中国科学院知识创新工程重大项目(KZCZ1-Y-05
KZCX1-10)
欧盟合作项目(ICA4-CT-2002-10004)联合资助.
