Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL084689 |
Mechanics of Inflationary Deformation During Caldera Collapse: Evidence From the 2018 Kilauea Eruption | |
Segall, Paul1; Anderson, Kyle R.2; Johanson, Ingrid3; Miklius, Asta3 | |
2019-11-03 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | USA |
英文摘要 | During the 2018 Kilauea eruption the caldera floor dropped 500 m in 62 nearly periodic events of up to 8 m. Caldera collapse maintains pressure in the magma reservoir necessary to sustain high-rate eruptions. The 2018 collapses were accompanied by inflationary tilts and displacements, similar to observations at other basaltic calderas. Collapse is modeled in 2-D by uniform slip dislocations intersecting a magma chamber. Collapses occurred rapidly, such that mass within the chamber was constant. For vertical faults surface deformation outside the collapse results only from chamber pressurization with displacements antiparallel to precollapse deflation, similar to observations. For inward dipping faults the predicted ratio of horizontal to vertical displacements during collapse is greater than for the precollapse deflation, as observed. For outward dipping faults the horizontal displacements are inward, contrary to data. The average deformation trends during the eruption depend on fault dip and whether stress required to trigger collapses was constant or changed with time. |
英文关键词 | caldera collapse faulting Kilauea |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000493707700001 |
WOS关键词 | TOPOGRAPHY ; VOLCANO ; MODELS |
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/188212 |
专题 | 气候变化 |
作者单位 | 1.Stanford Univ, Geophys, Stanford, CA 94305 USA; 2.US Geol Survey, Calif Volcano Observ, 345 Middlefield Rd, Menlo Pk, CA 94025 USA; 3.US Geol Survey, Hawaiian Volcano Observ, Volcano, HI USA |
推荐引用方式 GB/T 7714 | Segall, Paul,Anderson, Kyle R.,Johanson, Ingrid,et al. Mechanics of Inflationary Deformation During Caldera Collapse: Evidence From the 2018 Kilauea Eruption[J]. GEOPHYSICAL RESEARCH LETTERS,2019. |
APA | Segall, Paul,Anderson, Kyle R.,Johanson, Ingrid,&Miklius, Asta.(2019).Mechanics of Inflationary Deformation During Caldera Collapse: Evidence From the 2018 Kilauea Eruption.GEOPHYSICAL RESEARCH LETTERS. |
MLA | Segall, Paul,et al."Mechanics of Inflationary Deformation During Caldera Collapse: Evidence From the 2018 Kilauea Eruption".GEOPHYSICAL RESEARCH LETTERS (2019). |
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