近日，美国斯坦福大学Xing Tan团队提出了Campi Flegrei火山口当前动荡阶段的清晰视图。相关论文于2025年9月4日发表在《科学》杂志上。

研究组以重新训练的机器学习工作流程为主题，以增强Campi Flegrei火山口（CFc）地震监测网络的性能，来改进对火山动荡演变的跟踪。他们分析了最近（22年1月21日- 25年3月20日）的连续地震资料，发现在人口密集的CFc，地震活动急剧增加。该分析将地震活动目录从大约12,000次扩展到超过54,000次。

更完整的地震活动性图像揭示了一个清晰的火山口环断层系统（RFS），其地震活动性深度范围非常窄，清楚地照亮了火山口北部的浅层断层，并发现了可能与热液系统有关的非常浅的混合地震。到目前为止，研究组还没有观察到岩浆向上迁移的任何直接特征，也没有在RFS上或内部3.7公里以下的深度观察到地震活动。

附：英文原文

Title: A clearer view of the current phase of unrest at Campi Flegrei caldera

Author: Xing Tan, Anna Tramelli, Sergio Gammaldi, Gregory C. Beroza, William L. Ellsworth, Warner Marzocchi

Issue&Volume: 2025-09-04

Abstract: We used a retrained machine learning workflow to enhance the performance of the seismic monitoring network at Campi Flegrei caldera (CFc) for improved tracking of the evolution of volcanic unrest. We analyzed the recent (1/21/22 – 03/20/25) continuous seismic data, which showed a sharp increase in seismicity at the highly populated CFc. Our analysis expanded the seismicity catalog from around 12,000 to over 54,000 earthquakes. The more complete picture of seismicity revealed a sharply defined caldera ring fault system (RFS) featuring a very narrow depth range of seismicity, clearly illuminated shallow faults in the northern part of the caldera and uncovered a source of very shallow hybrid earthquakes likely related to the hydrothermal system. To date, we have not observed any direct signature of upward migration of magma, nor have we observed seismic activity at depths below 3.7 km on or inside the RFS.

DOI: adw9038

Source: https://www.science.org/doi/10.1126/science.adw9038