| 项目编号: | 1505710
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| 项目名称: | RAPID Investigation of Active Fissure Eruptions, Holuhraun, Iceland |
| 作者: | Jeffrey Karson
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| 承担单位: | Syracuse University
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| 批准年: | 2013
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| 开始日期: | 2014-12-15
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| 结束日期: | 2015-11-30
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| 资助金额: | USD16506
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Earth Sciences
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| 英文关键词: | iceland
; fissure swarm
; fissure eruption
; eruptive fissure
; central volcano
; subglacial eruption
; iceland?s earth science institute
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| 英文摘要: | The Bárðarbunga volcanic system is typical of the fundamental spreading units in the active rift zones of Iceland. These consist of central volcanoes and fissure swarms that are typically 10-25 km wide and tens of kilometers in length. The fissure swarms are the surface expression of dike intrusions fed by the central volcanoes. On September 3, 2014 an eruptive fissure formed as seismic activity and geodetic data showed dramatic subsidence of the Bárðarbunga caldera. More fissure eruptions developed and produced fire fountains up to 50 meters in height and lava flows covering nearly 20 square kilometers. Much of the central and north- central interior highlands of Iceland were evacuated and closed to the public, due to concerns that a subglacial eruption at the central volcano could generate a jökulhlaup, jeopardizing transportation both in and out of the area.
In collaboration with the University of Iceland?s Earth Science Institute, the team plans to use a small drone equipped with GPS navigation and a Go-Pro (still+video) to produce digital image mosaics that cover many square kilometers in a single 15 minute survey of the active and recently active (days old) lava fields and fissure eruptions with images of fire fountaining, spatter deposits, a?a and pahoehoe flow units. Direct observations and video will document local flow rates, slopes, etc. Samples will be collected to assess the vesicularity and crystallinity of the samples. One goal will be to use these data to relate these parameters to the flow morphology, which would provide a logical ?scaling-up? of experiments they are doing at Syracuse University in the SU Lava Project. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/95322
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Jeffrey Karson. RAPID Investigation of Active Fissure Eruptions, Holuhraun, Iceland. 2013-01-01.
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