| 项目编号: | NE/I00775X/1
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| 项目名称: | Mapping and sampling of the tephra fallout from the 14 April - ongoing eruption at Eyjafjoll volcano, S-Iceland |
| 作者: | Thor Thordarson
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| 承担单位: | University of Edinburgh
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| 批准年: | 2009
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| 开始日期: | 2010-20-06
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| 结束日期: | 2011-31-07
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| 资助金额: | GBP51551
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| 资助来源: | UK-NERC
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| 项目类别: | Research Grant
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| 国家: | UK
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| 语种: | 英语
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| 特色学科分类: | Geosciences 
; (70%)
; Medical & health interface 
; (10%)
; Terrest. & freshwater environ. 
; (20%)
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| 英文摘要: | The 14 April-ongoing 2010 explosive eruption at Eyjafjöll volcano, south Iceland unexpectedly caused widespread disruption to aviation and every day life in the UK and Europe, resulting in economic difficulties that were felt across the globe. The widespread problem was caused by the large proportions of ash produced by the eruption coupled with atmospheric conditions that transported the ash plume to Europe. Although, atmospheric dispersal models have coped well with predicting the plume dispersal, accurate modelling of ash concentration and grain size distribution within the plume has been challenging due to poorly defined input (i.e. source) parameters and limited information on actual atmospheric ash-removal rates. We aim to provide data on source parameters for these models. Mapping, measurement and sampling of the eruption products (i.e. tephra fall out and lava) is an essential undertaking for quantitative determination of critical eruption parameters such as the volume of erupted magma, magma discharge upon venting, whole deposit grainsize, grain morphologies, magma composition, degree of magma degassing and atmospheric venting of volatiles such as H2O, CO2, S, Cl, F. These parameters underpin other research and modelling aimed at assessing the atmospheric effects of an eruption. The tephra blanket from the 14 April - ongoing Eyjafjöll eruption in Iceland is highly susceptible to reworking (i.e. wind, rain and surface runoff) and, in this particular case. The vulnerability is particularly high because spring thaw with all its snow melt is imminent in Iceland. Thus to ensure the highest quality data set for quantitative reconstruction of the tephra fallout in Iceland along with reliable calculations of eruption volume, magma discharge and whole deposit grain size, we are seeking Emergency Funds to enable expedient recovery of the essential field data as well as to allow us to undertake rapid reconstruction of key eruption parameters that will underpifuture research on the 2010 Eyjafjöll event by us and other researchers within Earth Sciences and related fields. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/103669
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | University of Edinburgh
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| Recommended Citation: | |
Thor Thordarson. Mapping and sampling of the tephra fallout from the 14 April - ongoing eruption at Eyjafjoll volcano, S-Iceland. 2009-01-01.
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