Rapid deployment of a seismo-acoustic experiment at Mt. Etna, Italy, following a marked increase in eruptive activity

在火山喷发活动显着增加后，在意大利埃特纳火山迅速部署地震声学实验

基本信息

批准号：
NE/W004771/1
负责人：
Silvio De Angelis
金额：
$ 3.01万
依托单位：
University of Liverpool
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2021
资助国家：
英国
起止时间：
2021 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=NE%2FW004771%2F1
关键词：
Rapid deployment seismo acoustic experiment

项目摘要

The physics that define the relationships between the characteristics of seismic and acoustic signals recorded during eruptions and the rate at which gas and pyroclasts are ejected from volcanic vents remain elusive. Presently, scientists rely on data-informed models that describe relations - for example - between the magnitude of ground displacement recorded during eruptions and the height of eruption ash columns, or between the mass of material injected into the atmosphere during eruptions and the height of volcanic plumes. These relations are widely used in operational settings, for example to produce forecasts of atmospheric volcanic ash dispersal that, in turn, have implications for risk management. However, physics-based models able to confirm the validity of these empirical models are still lacking. In addition, msn of these empirical laws are based on data collected in the past with a resolution not comparable to what has become available throughout the last decade. The ongoing eruptive activity at Mt. Etna (Italy) offers a rare opportunity to collect data suitable for implementing validating new models to address this scientific gap. Eruptive activity at Etna such as that observed starting in mid-to-late February 2021, is recorded once every decade or even longer. The last comparable episode before present was in 2011. A NERC Urgency Grant is the ideal framework to seize an opportunity that is not frequently available. We propose an experiment to help addressing key scientific questions on the relations between the intensity of seismic and acoustic tremor at erupting volcanoes and the dynamics of eruption. We anticipate that future research based on the newly collected data will have impact on hazard assessment and risk mitigation at Mt. Etna, and other eruption prone areas. In order to maximize the impact of the proposed study we commit to publicly release the data collected starting from month 6 of the project.

在喷发期间记录的地震信号和声学信号的特征与气体和火山弹性从火山通风口弹出的速率之间的物理学之间的关系仍然难以捉摸。目前，科学家依靠描述关系的数据信息，例如 - 在喷发期间记录的地面位移的大小与喷发灰分的高度之间，或在喷发期间注入大气中注入大气的材料的质量与火山羽流的高度。这些关系被广泛用于操作环境中，例如产生大气火山灰分的预测，而大气灰分散布反过来又对风险管理产生了影响。但是，仍然缺乏能够确认这些经验模型的有效性的基于物理学的模型。此外，这些经验定律的MSN基于过去收集的数据，其分辨率与过去十年中可用的数据相媲美。埃特纳山（意大利）正在进行的爆发活动提供了一个难得的机会，可以收集适合实施验证新模型以解决这一科学差距的数据。每十年甚至更长的时间记录一次在2021年2月中旬开始的ETNA的爆发活动，例如从2021年2月中旬开始观察到的活动。现场之前的最后一集是在2011年。NERC紧急赠款是抓住机会不经常可用的理想框架。我们提出了一项实验，以帮助解决有关爆发火山和喷发动力学的地震强度和声学震颤强度之间关系的关键科学问题。我们预计，基于新收集的数据的未来研究将对ETNA山以及其他爆发的危险评估和降低风险的影响产生影响。为了最大程度地提高拟议研究的影响，我们承诺从项目的第6个月开始公开发布收集的数据。