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首页> 外文期刊>Journal of Volcanology and Geothermal Research >Structure of the acid hydrothermal system of Papandayan volcano, Indonesia, investigated by geophysical methods
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Structure of the acid hydrothermal system of Papandayan volcano, Indonesia, investigated by geophysical methods

机译:用地球物理方法研究印度尼西亚帕潘达延火山酸性热液系统的结构

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Papandayan (2665 m asl) is an Indonesian stratovolcano located at 50 km from Bandung in west Java and characterized by an intense hydrothermal activity. An advanced alteration takes place where acid fluids interact with rocks, weakening the edifice, so that even minor explosive eruptions threaten the stability of its flanks. The purpose of the current study is to delineate the geometry of the acid hydrothermal plume using Electrical Resistivity Tomography (ERT). We used self-potential, pH measurements in water (in situ) and of soil samples, SO2 and CO2 soil concentration mappings to better understand the resistivity structure. Measurements have been performed inside the 1772 crater with a maximal depth of investigation of about 250 m for electrical resistivity tomography.
机译:Papandayan(2665 m asl)是印度尼西亚的平流火山,距爪哇西部的万隆50公里,具有强烈的热液活动。在酸性流体与岩石相互作用的地方发生了高级变化,从而削弱了建筑物,因此,即使是较小的爆炸爆发也威胁着其侧面的稳定性。本研究的目的是使用电阻层析成像(ERT)描绘酸性热液羽流的几何形状。我们使用了水(原位)和土壤样品中的自电势,pH测量,SO2和CO2土壤浓度图来更好地了解电阻率结构。已经在1772年的环形山内部进行了测量,电阻层析成像的最大调查深度约为250 m。

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