Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL076936 |
Continuous Gravity and Tilt Reveal Anomalous Pressure and Density Changes Associated With Gas Pistoning Within the Summit Lava Lake of Klauea Volcano, Hawai'i | |
Poland, Michael P.1; Carbone, Daniele2 | |
2018-03-16 | |
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:5页码:2319-2327 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Italy |
英文摘要 | Gas piston events within the summit eruptive vent of Klauea Volcano, Hawaii, are characterized by increases in lava level and by decreases in seismic energy release, spattering, and degassing. During 2010-2011, gas piston events were especially well manifested, with lava level rises of tens of meters over the course of several hours, followed by a sudden drop to preevent levels. The changes in lava level were accompanied by directly proportional changes in gravity, but ground deformation determined from tilt was anticorrelative. The small magnitude of the gravity changes, compared to the large changes in volume within the vent during gas pistons, suggests that pistoning involves the accumulation of a very low-density (100-200 kg/m(3)) foam at the top of the lava column. Co-event ground tilt indicates that rise in lava level is paradoxically associated with deflation (the opposite is usually true), which can be modeled as an increase in the gas content of the magma column between the source reservoir and the surface. Gas pistoning behavior is therefore associated with not only accumulation of a shallow magmatic foam but also more bubbles within the feeder conduit, probably due to the overall decrease in gas emissions from the lava lake during piston events. |
英文关键词 | Kilauea lava lake deformation gravity change pressure geodesy |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428402400023 |
WOS关键词 | KILAUEA VOLCANO ; EXPLOSIVE ERUPTIONS ; FLUCTUATIONS ; SEISMICITY ; CONVECTION ; ROCKFALLS ; INSIGHTS |
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/29114 |
专题 | 气候变化 |
作者单位 | 1.US Geol Survey, Cascades Volcano Observ, Vancouver, WA 98683 USA; 2.Ist Nazl Geofis & Vulcanol, Sez Catania, Osservatorio Etneo, Catania, Italy |
推荐引用方式 GB/T 7714 | Poland, Michael P.,Carbone, Daniele. Continuous Gravity and Tilt Reveal Anomalous Pressure and Density Changes Associated With Gas Pistoning Within the Summit Lava Lake of Klauea Volcano, Hawai'i[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(5):2319-2327. |
APA | Poland, Michael P.,&Carbone, Daniele.(2018).Continuous Gravity and Tilt Reveal Anomalous Pressure and Density Changes Associated With Gas Pistoning Within the Summit Lava Lake of Klauea Volcano, Hawai'i.GEOPHYSICAL RESEARCH LETTERS,45(5),2319-2327. |
MLA | Poland, Michael P.,et al."Continuous Gravity and Tilt Reveal Anomalous Pressure and Density Changes Associated With Gas Pistoning Within the Summit Lava Lake of Klauea Volcano, Hawai'i".GEOPHYSICAL RESEARCH LETTERS 45.5(2018):2319-2327. |
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