Increase of shear wave velocity before the 1998 eruption of Merapi volcano (Indonesia)
Increase of shear wave velocity before the 1998 eruption of Merapi volcano (Indonesia)
复制标题
DOI：
10.1029/2006gl025928
复制
发表时间：
2006-05
影响因子：
5.2
通讯作者：
U. Wegler;B. Lühr;R. Snieder;A. Ratdomopurbo
中科院分区：
文献类型：
--
作者：
U. Wegler;B. Lühr;R. Snieder;A. Ratdomopurbo
我们通过分析由可重复受控震源激发的多重散射弹性波，推断默拉皮火山（印度尼西亚爪哇）大厦在 1998 年喷发之前弹性特性的时间变化。揭示了喷发前剪切波速度的增加，这与喷发前的地震活动和穹顶生长密切相关。该方法可以用作火山内部压力变化的“压力计”，因为已知岩石中压力的增加会导致弹性波速度成比例增加。
We infer temporal changes in the elastic properties of the edifice of Merapi volcano (Java, Indonesia) before its eruption in 1998 by analyzing multiply scattered elastic waves excited by a repeatable controlled seismic source. A pre‐eruptive increase of shear wave velocity, which correlates well with pre‐eruptive seismicity and dome‐growth is revealed. The method can be used as a “pressure‐gauge” for pressure changes inside of volcanoes, because increasing pressures in rocks are known to cause proportionally increasing elastic wave velocities.