Combining Petrology and Seismology to Unravel the Plumbing System of a Typical Arc Volcano: An Example From Marapi, West Sumatra, Indonesia
文献类型：期刊论文
| 作者 | Nurfiani, D.3; Wang, X.1,4; Gunawan, H.2; Triastuty, H.2; Hidayat, D.3; Wei, S. J.3; Taisne, B.3; Bouvet de Maisonneuve, C.3 |
| 刊名 | GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
 |
| 出版日期 | 2021-04-01 |
| 卷号 | 22期号:4页码:25 |
| 关键词 | Marapi melt fraction plumbing system pyroxene thermobarometry receiver function |
| DOI | 10.1029/2020GC009524 |
| 英文摘要 | Marapi in Sumatra is characterized by frequent short-lived explosions and small eruptions (Volcanic Explosivity Index 1-2) and in the past 250 years, the volcano has erupted >60 times. Recent volcanic bombs and the presence of broadband seismic stations lead us to reconstruct the plumbing system of the volcano through an interdisciplinary study. A petrologic study of the summit bombs uses pyroxene, plagioclase and glass compositions to obtain pressures and temperatures of magma storage as well as identify pre-eruptive processes. Two-pyroxene geothermobarometry provides pre-eruptive crystallization pressure estimates of 4-7 kbar (similar to 15-26 km). Compositional and textural analyses of plagioclase and pyroxene crystals indicate that mafic magma recharge was followed by mixing with the resident magma and renewed crystallization prior to eruption. In order to further image the magma reservoir, we performed a joint inversion of teleseismic receiver functions and surface waves (H/V ratio). The inversion reveals a low velocity zone (LVZ) at depths of 15-21 km that has 7 +/- 3% shear velocity reduction, corresponding to an estimated melt fraction of 5 +/- 2%. The depth of this LVZ overlaps with the depth of magma storage estimated from petrology, constraining it with high confidence. Such a combined interdisciplinary study provides valuable information for evaluating future periods of unrest, laying out a framework for the interpretation of incoming monitoring data and signals to look out for in order to improve eruption forecasts. |
| WOS关键词 | MAGMA STORAGE ; RECEIVER-FUNCTION ; SEISMIC VELOCITY ; AEOLIAN ISLANDS ; JOINT INVERSION ; BENEATH ; PLAGIOCLASE ; INSIGHTS ; ERUPTION ; MELT |
| 资助项目 | Earth Observatory of Singapore from the National Research Foundation Singapore[04MNS001807A620OOE01] ; Earth Observatory of Singapore from the National Research Foundation Singapore[04MNS001902A620] ; Singapore Ministry of Education under the Research Centers of Excellent initiative |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000643942600024 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | Earth Observatory of Singapore from the National Research Foundation Singapore ; Earth Observatory of Singapore from the National Research Foundation Singapore ; Singapore Ministry of Education under the Research Centers of Excellent initiative ; Singapore Ministry of Education under the Research Centers of Excellent initiative ; Earth Observatory of Singapore from the National Research Foundation Singapore ; Earth Observatory of Singapore from the National Research Foundation Singapore ; Singapore Ministry of Education under the Research Centers of Excellent initiative ; Singapore Ministry of Education under the Research Centers of Excellent initiative ; Earth Observatory of Singapore from the National Research Foundation Singapore ; Earth Observatory of Singapore from the National Research Foundation Singapore ; Singapore Ministry of Education under the Research Centers of Excellent initiative ; Singapore Ministry of Education under the Research Centers of Excellent initiative ; Earth Observatory of Singapore from the National Research Foundation Singapore ; Earth Observatory of Singapore from the National Research Foundation Singapore ; Singapore Ministry of Education under the Research Centers of Excellent initiative ; Singapore Ministry of Education under the Research Centers of Excellent initiative |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/101182]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 通讯作者 | Nurfiani, D. |
| 作者单位 | 1.CAS Ctr Excellence Deep Earth Sci, Guangzhou, Peoples R China 2.Ctr Volcanol & Geol Hazard Mitigat CVGHM, Yogyakarta, Indonesia 3.Nanyang Technol Univ, Earth Observ Singapore, Asian Sch Environm, Singapore, Singapore 4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Nurfiani, D.,Wang, X.,Gunawan, H.,et al. Combining Petrology and Seismology to Unravel the Plumbing System of a Typical Arc Volcano: An Example From Marapi, West Sumatra, Indonesia[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2021,22(4):25. |
| APA | Nurfiani, D..,Wang, X..,Gunawan, H..,Triastuty, H..,Hidayat, D..,...&Bouvet de Maisonneuve, C..(2021).Combining Petrology and Seismology to Unravel the Plumbing System of a Typical Arc Volcano: An Example From Marapi, West Sumatra, Indonesia.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,22(4),25. |
| MLA | Nurfiani, D.,et al."Combining Petrology and Seismology to Unravel the Plumbing System of a Typical Arc Volcano: An Example From Marapi, West Sumatra, Indonesia".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 22.4(2021):25. |
入库方式： OAI收割
来源：地质与地球物理研究所
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