La Soufriere 2021: Recharge, remobilisation or complete renewal of a magmatic system

La Soufriere 2021：岩浆系统的充电、重新启动或彻底更新

• 批准号: NE/W000725/1
• 负责人: David Pyle
• 金额: $ 6.64万
• 依托单位: University of Oxford
• 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%2FW000725%2F1
• 关键词: La; Soufriere; 2021; Recharge; remobilisation

Volcanic eruptions that form lava domes pose a significant hazard, as they tend to last for extended periods of time (often weeks to months) and can often switch quickly from slow effusion to violent explosion. The start of a new lava dome eruption offers a rare opportunity to carry out a rapid study to understand where the new lavas came from; and to test ideas about how the eruption will progress.On December 27, 2020, a new lava dome eruption began in the summit crater of the Eastern Caribbean volcano of La Soufriere, on the island of St Vincent, after a short period of unusual seismic activity. The new lava dome has been growing steadily, erupting on to the floor of the summit crater, next to an old lava dome that erupted in 1979. Scientists at the University of the West Indies Seismic Research Centre (SRC) have been monitoring events, and collected some new lava samples on January 16, 2021.St Vincent had two previous lava-dome eruptions in the 1970s. In 1971-2, a lava-dome formed in the summit crater, which at that time was flooded. After 3-4 months of slow dome growth the eruption ended, and there was no explosive activity. Scientists collected one lava dome sample at the time, and a piece of this is now held in the Smithsonian Institution in the USA. In 1979, a new eruption began with a series of violent explosions, and then switched to a steady lava-dome eruption for the next 5 months. Our rapid-response study of the newly-erupting lavas on St Vincent will answer the question of where the new magma has come from. There are several possibilities that we anticipate, and our observations will allow us to work out which possibility is the most likely:- Is this a new batch of magma, which has just risen up into the volcano? And if so, can we understand why?- Is this a batch of magma that was left over from an earlier eruption, which has been disturbed, and has begun to erupt as a result? And if so, can we understand how the system was disturbed?In both cases, our findings will feed directly into the continuing investigations by the scientific team in charge of the volcano response, and will help to develop and firm up ideas about what will happen next in the eruption.

形成熔岩穹顶的火山喷发会带来重大危险，因为它们往往会持续很长一段时间（通常是几周到几个月），并且通常会迅速从缓慢喷发转变为猛烈爆炸。新的熔岩穹顶喷发的开始提供了一个难得的机会来进行快速研究，以了解新熔岩的来源；并测试有关喷发将如何进展的想法。 2020 年 12 月 27 日，在短暂的异常地震活动之后，圣文森特岛东加勒比拉苏弗里埃尔火山的山顶火山口开始了新的熔岩穹顶喷发。新的熔岩穹丘一直在稳步增长，喷发到山顶火山口的底部，旁边是 1979 年喷发的旧熔岩穹丘。西印度群岛大学地震研究中心 (SRC) 的科学家一直在监测事件，并于 2021 年 1 月 16 日收集了一些新的熔岩样本。圣文森特在 1970 年代曾发生过两次熔岩穹丘喷发。 1971 年 2 月，山顶火山口形成了一个熔岩穹顶，当时该火山口已被洪水淹没。经过 3-4 个月的缓慢穹顶生长后，喷发结束，并且没有爆炸活动。科学家当时收集了一个熔岩穹顶样本，其中一部分现在保存在美国史密森学会。 1979年，新的喷发开始了一系列猛烈的爆炸，然后在接下来的5个月里转为稳定的熔岩穹顶喷发。我们对圣文森特岛新喷发的熔岩的快速反应研究将回答新岩浆从何而来的问题。我们预计有几种可能性，我们的观察将使我们能够找出最有可能的可能性： - 这是一批刚刚升入火山的新岩浆吗？如果是这样，我们能理解为什么吗？-这是早期喷发留下的一批岩浆，受到干扰，因此开始喷发吗？如果是这样，我们能否了解系统是如何受到干扰的？在这两种情况下，我们的发现将直接反馈到负责火山反应的科学团队的持续调查中，并将有助于发展和巩固关于火山喷发接下来会发生什么的想法。

项目成果

Satellite measurements of plumes from the 2021 eruption of La Soufrière, St Vincent

卫星测量 2021 年圣文森特拉苏弗里耶尔喷发的羽流

• DOI: 10.5194/acp-2022-772
• 发表时间: 2022
• 作者: Taylor I

Petrology of the 2020-21 effusive to explosive eruption of La Soufrière volcano, St Vincent: Insights into plumbing system architecture and magma assembly mechanism

圣文森特拉苏弗里耶尔火山 2020-21 年喷发至爆炸性喷发的岩石学：深入了解管道系统架构和岩浆聚集机制

• DOI: 10.1144/sp539-2022-177
• 发表时间: 2023
• 期刊: Special Publications
• 作者: Weber, Gregor;Blundy, Jon;Barclay, Jenni;Pyle, David M.;Cole, Paul;Frey, Holli;Manon, Matthew;Davies, Bridie V.;Cashman, Katharine
• 通讯作者: Cashman, Katharine

Responding to eruptive transitions during the 2020-2021 eruption of La Soufrière volcano, St. Vincent.

• DOI: 10.1038/s41467-022-31901-4
• 发表时间: 2022-07-15
• 期刊: Nature communications
• 影响因子: 16.6

A satellite chronology of plumes from the April 2021 eruption of La Soufrière, St Vincent

2021 年 4 月圣文森特拉苏弗里耶尔喷发的羽流卫星年表

• DOI: 10.5194/acp-23-15209-2023
• 发表时间: 2023
• 期刊: Atmospheric Chemistry and Physics
• 影响因子: 6.3
• 作者: Taylor I

Explosive sequence of La Soufrière, St Vincent, April 2021: insights into drivers and consequences via eruptive products

2021 年 4 月，圣文森特拉苏弗里耶尔的爆炸序列：通过喷发产物深入了解驱动因素和后果

• DOI: 10.1144/sp539-2022-292
• 发表时间: 2023
• 期刊: Geological Society, London, Special Publications
• 作者: Cole P