La Palma 2021: Petrological insights into magmatic evolution in an ongoing volcanic crisis

拉帕尔马 2021：对持续火山危机中岩浆演化的岩石学见解

基本信息

批准号：
NE/W007673/2
负责人：
Katy Chamberlain
金额：
$ 6.28万
依托单位：
Teesside University
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2022
资助国家：
英国
起止时间：
2022 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=NE%2FW007673%2F2
关键词：
La Palma 2021 Petrological insights

项目摘要

Volcanic eruptions are an ever-present threat to society with typically between five and forty volcanoes in active eruption around the world on any given day (Smithsonian Institution). Whilst volcanic eruptions are not rare phenomena, there are still limitations with respect to forecasting future eruptive activity and understanding how magma evolves both before, during and at the conclusion of eruptive episodes. Typically syn-eruptive processes are studied using geophysical observations of earthquakes and ground deformation, which only yields information on the shallower portions of the magmatic plumbing systems. Then, following eruption cessation, petrologists can study the erupted rocks and crystal cargo to understand the deeper processes that affected the initiation, longevity and conclusion of volcanic activity.However, the advances in rapid sample processing techniques and petrological data collection, coupled with the ongoing eruption of Cumbre Vieja on La Palma presents a time-sensitive opportunity to synthesise these classically syn-eruptive (observational) and post-eruptive (petrological) approaches. Thus we propose to combine rapid near-real-time petrological data on the magmatic plumbing system of La Palma with the monitoring work already being undertaken by INVOLCAN (the local volcano monitoring agency). In this project we will undertake systematic sampling of the eruptive materials from Cumbre Vieja, undertake rapid analysis of the bulk rock samples and crystal cargo, and interpret any changes in magma compositions and timescales. These data will be compared with real-time monitoring data collected by INVOLCAN, and help to forecast how the eruption may evolve over time. A key output of this (aside from the detailed knowledge of the Cumbre Vieja magmatic system) is the development and refinement of a series of protocols for rapid collection of petrological data, and integration with pre-existing monitoring data. This will allow effective integration of petrological data with classic monitoring techniques, to develop future eruption forecasting tools.

火山喷发是对社会的永远威胁，在任何一天的任何一天（史密森尼机构）中，世界各地的五个至40座火山在世界各地的爆发中。尽管火山喷发并不是罕见现象，但关于预测未来的喷发活性以及了解岩浆如何在喷发发作结束时仍存在局限性。通常，使用地震和地面变形的地球物理观察来研究综合过程，这仅在岩浆管道系统的较浅部分中提供信息。然后，随后停止，岩石学家可以研究爆发的岩石和水晶货物，以了解影响着火山活动的启动，寿命和结论的更深层次的过程。旋转（观测）和爆发后（岩石学）方法。因此，我们建议将La Palma的岩浆管道系统的快速近实时岩石学数据与Risscan（当地火山监测机构）已经进行的监测工作结合在一起。在这个项目中，我们将对Cumbre Vieja的喷发材料进行系统采样，对散装岩石样品和水晶货物进行快速分析，并解释岩浆成分和时间表的任何变化。这些数据将与Risscan收集的实时监视数据进行比较，并有助于预测喷发如何随着时间的流逝而发展。此关键输出（除了对Cumbre Vieja Magmatic系统的详细知识之外）是开发和完善一系列协议，以快速收集岩石学数据，并与预先存在的监视数据集成。这将允许将岩石学数据与经典监测技术的有效整合在一起，从而开发未来的喷发预测工具。