坎皮·弗莱格雷的3D结构和动态增强了多重危险评估
G De Landro1, T Vanorio2, T Muzellec1,3
1Department of Physics 'Ettore Pancini', University of Naples 'Federico II', Naples, Italy.
Nature communications
|May 23, 2025
概括
坎皮·弗莱格雷伊活跃的火山口显示出一个富含气体的水库和变形的石头岩带动地面升起. 这种地震活动和热爆炸的可能性需要重新评估危险评估.
科学领域:
- 地质物理学 地质物理学
- 火山学 火山学是一门学科.
- 地震学 地震学
背景情况:
- 坎皮·弗莱格雷 (Campi Flegrei) 是一个人口密集的活跃火山口,具有显著的地面提升和地震性.
- 了解地下结构对于评估火山风险至关重要.
研究的目的:
- 为了创建Campi Flegrei火山口的高分辨率3D地震图像.
- 确定火山口的结构特征及其与表面变形和地震性之间的关系.
主要方法:
- 地震力转移以获得精确的事件位置.
- 3D P和S波地震成像. 3D P和S波地震成像.
- 使用与地点相关的岩石样本进行岩石物理实验.
主要成果:
- 确定了2公里以下的天然气丰富的水库,1-2公里处的变形的顶岩和3.5公里以下的地下室.
- 观察到从顶岩向下移动的地震性迁移,由应力变化引发的更深层事件.
- 与富含气体的储相关的最大提升,得到了实验室实验的支持,这些实验显示了孔液压力效应.
结论:
- 压缩气体储与岩石岩之间的相互作用驱动地面升起.
- 地震活动和潜在的热爆炸是可能的情景.
- 结果促使对Campi Flegrei.的危险评估进行重新评估.
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