Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL074008 |
Dike propagation energy balance from deformation modeling and seismic release | |
Bonaccorso, Alessandro1; Aoki, Yosuke2; Rivalta, Eleonora3 | |
2017-06-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | Italy; Japan; Germany |
英文摘要 | Magma is transported in the crust mainly by dike intrusions. In volcanic areas, dikes can ascend toward the free surface and also move by lateral propagation, eventually feeding flank eruptions. Understanding dike mechanics is a key to forecasting the expected propagation and associated hazard. Several studies have been conducted on dike mechanisms and propagation; however, a less in-depth investigated aspect is the relation between measured dike-induced deformation and the seismicity released during its propagation. We individuated a simple x that can be used as a proxy of the expected mechanical energy released by a propagating dike and is related to its average thickness. For several intrusions around the world (Afar, Japan, and Mount Etna), we correlate such mechanical energy to the seismic moment released by the induced earthquakes. We obtain an empirical law that quantifies the expected seismic energy released before arrest. The proposed approach may be helpful to predict the total seismic moment that will be released by an intrusion and thus to control the energy status during its propagation and the time of dike arrest. Plain Language Summary Dike propagation is a dominant mechanism for magma ascent, transport, and eruptions. Besides being an intriguing physical process, it has critical hazard implications. After the magma intrusion starts, it is difficult to predict when and where a specific horizontal dike is going to halt and what its final length will be. In our study, we singled an equation that can be used as a proxy of the expected mechanical energy to be released by the opening dike. We related this expected energy to the seismic moment of several eruptive intrusions around the world (Afar region, Japanese volcanoes, and Mount Etna). The proposed novel approach is helpful to estimate the total seismic moment to be released, therefore allowing potentially predicting when the dike will end its propagation. The approach helps answer one of the fundamental questions raised by civil protection authorities, namely, how long will the eruptive fissure propagate? |
英文关键词 | dike propagation dike deformation and seismic release eruptive fissure hazard |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404382600028 |
WOS关键词 | MOUNT-ETNA ; MAGMA TRANSPORT ; IZU PENINSULA ; RIFT ZONES ; INTRUSION ; VOLCANO ; DYKES ; EMPLACEMENT ; ERUPTION ; EARTHQUAKES |
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/27198 |
专题 | 气候变化 |
作者单位 | 1.Ist Nazl Geofis & Vulcanol, Catania, Italy; 2.Univ Tokyo, Earthquake Res Inst, Tokyo, Japan; 3.Deutsches GeoForschungsZentrum GFZ, Helmholtz Zentrum Potsdam, Potsdam, Germany |
推荐引用方式 GB/T 7714 | Bonaccorso, Alessandro,Aoki, Yosuke,Rivalta, Eleonora. Dike propagation energy balance from deformation modeling and seismic release[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(11). |
APA | Bonaccorso, Alessandro,Aoki, Yosuke,&Rivalta, Eleonora.(2017).Dike propagation energy balance from deformation modeling and seismic release.GEOPHYSICAL RESEARCH LETTERS,44(11). |
MLA | Bonaccorso, Alessandro,et al."Dike propagation energy balance from deformation modeling and seismic release".GEOPHYSICAL RESEARCH LETTERS 44.11(2017). |
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