NSFGEO-NERC: A general model for bubble nucleation and growth in volcanic systems

NSFGEO-NERC：火山系统中气泡成核和生长的通用模型

• 批准号: NE/X016668/1
• 负责人: Edward Llewellin
• 金额: $ 31.7万
• 依托单位: Durham University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FX016668%2F1
• 关键词: NSFGEO; NERC; general; model; bubble

Volcanic eruptions are driven by the formation and growth of bubbles in magma. The timing of bubble formation and the rate of bubble growth control the type of the eruption, and determine the nature of eruption products. We need to understand bubble nucleation and growth in order to meet one of the grand challenges in volcanology: forecasting the onset, size, duration, and resultant hazards of explosive eruptions. We will conduct new experiments that replicate the conditions inside the sub-volcanic plumbing system, and will measure the characteristics of the bubbles that form as we vary those conditions. We will use the results to create new computational models for bubble formation and link those to existing models for bubble growth. This will create a general tool that will allow the volcanology community to predict the conditions under which bubbles form in magma as it rises to the surface, and the rate at which the bubbles grow. These models will help us to predict how magma will behave during volcanic eruptions, and to interpret the materials that are erupted.

火山喷发是由岩浆中气泡的形成和增长驱动的。气泡形成的时间和气泡生长的速度控制着喷发的类型，并决定喷发产物的性质。我们需要了解气泡的成核和生长，以应对火山学中的重大挑战之一：预测爆炸性喷发的开始、大小、持续时间以及由此产生的危险。我们将进行新的实验，复制次火山管道系统内的条件，并将测量当我们改变这些条件时形成的气泡的特征。我们将利用这些结果创建新的气泡形成计算模型，并将其与现有的气泡增长模型联系起来。这将创建一个通用工具，使火山学界能够预测岩浆上升到地表时气泡形成的条件以及气泡生长的速度。这些模型将帮助我们预测火山喷发期间岩浆的行为，并解释喷发的物质。