Geophysical image of the hydrothermal system of Merapi volcano

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• 作者：S. Byrdina^a ; ^b ; ^{svetlana.byrdina@univ-savoie.fr} ; S. Friedel^c ; J. Vandemeulebrouck^a ; A. Budi-Santoso^d ; Suhari^e ; W. Suryanto^e ; M.H. Rizal^e ; E. Winata^e ; Kusdaryanto^d
• 关键词：Merapi ; ERT ; Hydrothermal system
• 刊名：Journal of Volcanology and Geothermal Research
• 出版年：2017
• 出版时间：1 January 2017
• 年：2017
• 卷：329
• 期：Complete
• 页码：30-40
• 全文大小：4204 K
• 卷排序：329

文摘

Electric resistivity tomography was carried out along the 10 km long north-south profile on Merapi volcano. Two low-resistivity hydrothermal bodies are identified, one below the summit and the second below the south flank. Deep resistivity is an order of magnitude higher below the north than below the south flank. South flank of Merapi shows stratified layers of extremely resistive lava flows followed by conductive water saturated layers. Stratified deposits separate the hydrothermal fluids: gas rises to the crater, liquid flows to the base of the edifice.