2019年至2024年,马丁尼克的蒙塔尼佩利火山持续存在多个参数的动荡
F R Fontaine1,2,3, J-C Komorowski4, J Corbeau4,5
1Institut de physique du globe de Paris (IPGP), Université Paris Cité, CNRS, F-75005, Paris, France. frfont@ipgp.fr.
Scientific reports
|July 2, 2025
概括
自2019年以来,Montagne Pelée火山表现出罕见的多参数动荡,包括地震活动增加和地面变形. 这表明深层岩液体正在振兴浅层热水系统.
科学领域:
- 火山学 火山学是一门学科.
- 地质物理学 地质物理学
- 地质化学 地质化学
背景情况:
- 马丁尼克的蒙塔尼佩利火山自1929年至1932年最后一次喷发以来,经历了有限的地震动荡.
- 2019年4月,浅层火山构造 (VT) 地震的显著增加开始,超过了基线速度.
研究的目的:
- 调查自2019年4月以来蒙塔涅佩利埃多参数火山动荡的起源和性质.
- 分析地震,变形和气体排放数据之间的相互作用.
主要方法:
- 分析地震数据,包括浅层和深层火山构造 (VT) 地震和波震动.
- 连续处理全球导航卫星系统 (GNSS) 数据以检测地面变形.
- 卫星图像分析以确定植被变化并评估被动CO2土壤脱气.
主要成果:
- 从2019年4月开始,浅层VT地震的激增,在骚乱开始时发生了深层VT事件.
- 从2020年11月开始检测到波震动,从2021年中期开始检测到轻微的水平变形.
- 建模表明,在山顶以下约1公里处有一个膨胀源,与水热系统和浅VT事件相吻合.
- 卫星数据显示,植被退化与二氧化碳脱气增加有关.
结论:
- 长期的动荡很可能是由于有限量的深层岩流体上升而引起的.
- 这些液体重新振兴了浅水热循环,导致观察到的动荡现象.
- 这项研究提供了罕见的洞察力,了解了蒙塔尼·佩雷火山火山动荡的早期阶段.
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