圣文森特岛上的苏弗里埃火山爆发,1971-1972年
Science (New York, N.Y.)
|July 13, 1973
概括
1971-1972年圣文森特的苏弗里埃火山喷发是一个安静的,水下事件. 岩挤出形成了一个岛屿,与爆炸性的1902年喷发形成鲜明对比.
科学领域:
- 火山学 火山学是一门学科.
- 地质地质地质地质地质地
背景情况:
- 圣文森特岛上的苏弗里埃尔火山有着大量火山喷发的历史.
- 之前的火山爆发,比如1902-1903年的火山爆发,是极具爆炸性和破坏性的.
研究的目的:
- 为了记录和描述1971-1972年苏弗里埃尔火山爆发的情况.
- 为了将喷发风格和相关现象与历史喷发进行比较.
主要方法:
- 在喷发期间 (1971年10月 - 1972年3月) 收集观测数据.
- 喷发物质的分析 (岩岩岩).
- 坑湖浴度和岛屿形成评估.
主要成果:
- 大约80 x 10^6 m^3的玄武岩石岩被挤出.
- 喷发主要是在180米深的火山口湖内潜水.
- 一个的岛屿从火山口湖中出现.
- 喷发的特点是温和的喷发式风格,地震活动最小.
结论:
- 1971-1972年苏弗里埃尔喷发是一个喷发性,水下事件,与爆炸性喷发不同.
- 新岛屿的形成表明,在喷发性火山活动期间,可能会发生重大地形变化.
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