Increase of shear wave velocity before the 1998 eruption of Merapi volcano (Indonesia)

被引：61
作者：
Wegler, U.
Luhr, B. -G.
Snieder, R.
Ratdomopurbo, A.
机构：
[1] Univ Leipzig, Dept Geol & Geophys, D-04103 Leipzig, Germany
[2] Geoforschungszentrum Potsdam, D-14473 Potsdam, Germany
[3] Colorado Sch Mines, Dept Geophys, Golden, CO 80401 USA
[4] Volcanol Survey Indonesia, Ctr Volcano Res & Technol Dev, Yogyakarta, Indonesia
来源：
GEOPHYSICAL RESEARCH LETTERS | 2006年 / 33卷 / 09期
关键词：
D O I：
10.1029/2006GL025928
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
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.
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页数：4
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