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DOI | 10.1002/2017GL076449 |
The Influence of Episodic Shallow Magma Degassing on Heat and Chemical Transport in Volcanic Hydrothermal Systems | |
Chen, Kewei1; Zhan, Hongbin1; Burns, Erick R.2; Ingebritsen, Steven E.3; Agrinier, Pierre4 | |
2018-04-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:7页码:3068-3076 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; France |
英文摘要 | Springs at La Soufriere of Guadeloupe have been monitored for nearly four decades since the phreatic eruption and associated seismic activity in 1976. We conceptualize degassing vapor/ gas mixtures as square-wave sources of chloride and heat and apply a new semianalytic solution to demonstrate that chloride and heat pulses with the same timing and duration result in good matches between measured and simulated spring temperatures and concentrations. While the concentration of chloride pulses is variable, the local boiling temperature of 96 degrees C was assigned to all thermal pulses. Because chloride is a conservative tracer, chloride breakthrough is only affected by one-dimensional advection and dispersion. The thermal tracer is damped and lagged relative to chloride due to conductive heat exchange with the overlying and underlying strata. Joint analysis of temperature and chloride allows estimation of the onset and duration of degassing pulses, refining the chronology of recent magmatic intrusion. Plain Language Summary Between eruptions, volcanoes continue to produce gases and water vapor associated with the cooling of magma (molten rock) deep beneath the volcano. These deep processes discharge gas and vapor (fumaroles) and heat the groundwater flowing through the volcano. Volcanic gases and vapors also contribute chemicals to the groundwater. Where groundwater leaves the volcano at springs, temperature and chemical measurements can be used to better understand the history of magmatic activity beneath the volcano. Understanding the history of volcanic processes aids volcanologists (scientists who study volcanoes) in understanding what conditions precede violent eruptions that might result in catastrophe. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000435743400023 |
WOS关键词 | GUADELOUPE LESSER ANTILLES ; LA-SOUFRIERE ; THERMAL SPRINGS ; INTRUSION ; FLOW |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/26240 |
专题 | 气候变化 |
作者单位 | 1.Texas A&M Univ, Dept Geol & Geophys, College Stn, TX 77843 USA; 2.US Geol Survey, Portland, OR USA; 3.US Geol Survey, 345 Middlefield Rd, Menlo Pk, CA 94025 USA; 4.Inst Phys Globe Paris, Paris, France |
推荐引用方式 GB/T 7714 | Chen, Kewei,Zhan, Hongbin,Burns, Erick R.,et al. The Influence of Episodic Shallow Magma Degassing on Heat and Chemical Transport in Volcanic Hydrothermal Systems[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(7):3068-3076. |
APA | Chen, Kewei,Zhan, Hongbin,Burns, Erick R.,Ingebritsen, Steven E.,&Agrinier, Pierre.(2018).The Influence of Episodic Shallow Magma Degassing on Heat and Chemical Transport in Volcanic Hydrothermal Systems.GEOPHYSICAL RESEARCH LETTERS,45(7),3068-3076. |
MLA | Chen, Kewei,et al."The Influence of Episodic Shallow Magma Degassing on Heat and Chemical Transport in Volcanic Hydrothermal Systems".GEOPHYSICAL RESEARCH LETTERS 45.7(2018):3068-3076. |
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