A model is proposed to explain temporal patterns of activity in a class of periodically exploding Strombolian-type volcanos. These patterns include major events (explosions) which follow each other every 10-30 minutes and subsequent tremor with a typical period of 1 second. This two-periodic activity is thought to be caused by two distinct mechanisms of accumulation of the elastic energy in the moving magma column: compressibility of the magma in the lower conduit and viscoelastic response of the almost solid magma plug on the top. A release of the elastic energy happens when a stick-slip dynamic phase transition in a boundary layer along the walls of the conduit occurs; this phase transition is driven by the shear stress accumulated in the boundary layer. The first-order character and intrinsic hysteresis of this phase transition explains the long periods of inactivity in the explosion cycle. Temporal characteristics of the model are found to be qualitatively similar to the acoustic and seismic signals recorded at Karymsky volcano in Kamchatka.
Methods for analyzing surface texture effects of volcanoes with Plinian and subplinian eruptions types: Cases of study Lascar (23 S) and Chaiten (42 S), Chile
Machine Learning Reveals the Seismic Signature of Eruptive Behavior at Piton de la Fournaise Volcano
火山震颤是我们理解活跃岩浆系统的关键，但由于其复杂性，关于其起源以及如何将其用于表征喷发动力学仍存在争议。在这项研究中，我们利用机器学习（ML）技术，使用来自Piton de la Fournaise火山（La Réunion岛）的6年连续地震资料来描述喷发期间记录的地震信号的特定模式。这些结果揭示了我们解释为与火山各种喷发动力学相关的信号，包括2015年8月至10月喷发期间大量熔岩的渗出，以及2018年9月至11月喷发期间喷发口的关闭。我们描述的ML工作流程可以很容易地应用于其他活火山，从而可能增强对火山爆发时间和空间演变的理解
Solid-Liquid Phase Transition As a Mechanism of Volcano Eruption
本文认为岩浆火山房的形成和喷发是由于地壳内部物质在构造运动中发生塑性形变而受热熔融所致。岩浆房中物质在加热过程中发生膨胀，导致岩浆房周围的固体壳层产生弹性应力。这种应力的弹性能可以高达10^17 J/1 km 3熔体。根据已有资料估算了岩浆流动速率，与观测资料吻合较好。讨论了岩浆房产生低频振动的机制。这种振动是由于在喷发稳定阶段熔融过程中形成的过剩弹性能引起的。建议的辐射理论允许评估的岩浆房的大小，根据可以测量的参数。所获得的岩浆房大小的理论评价得到了现有观测数据的支持。
Disturbances in the Doppler frequency shift of ionospheric signal and in telluric current caused by the atmospheric waves from an explosive eruption of Hunga Tonga volcano on January 15, 2022
Response of the underground environment of the KAGRA observatory against the air-pressure disturbance from the Tonga volcano eruption on January 15th, 2022
Ocean Surface Gravity Waves Excited by the 2022 Eruption of Hunga Tonga-Hunga Ha'apai Volcano
Earthquake Research Institute, the University of Tokyo（东京大学地震研究所）；National Research Institute for Earth Science and Disaster Resilience（国立研究开发法人防灾科学技术研究所）；Japan Agency for Marine-Earth Science and Technology (JAMSTEC)（日本海洋地球科学技术机构）
Toward Forecasting Volcanic Eruptions using Seismic Noise
在喷发期间，岩浆加压产生微妙的变化，火山机构的弹性性能。我们使用记录在Piton de la Fournaise火山上的环境地震噪声的再现性特性来测量小于0.1%的相对地震速度变化，时间分辨率为一天。我们的研究结果表明，五个研究的火山爆发之前，明显可检测的地震速度下降的岩浆注入区。这些前兆反映了岩浆加压引起的沉积扩张，可以作为改进火山喷发预测的有用指标。
An integrated P-T-H2O-lattice strain model to quantify the role of clinopyroxene fractionation on REE+Y/HFSE patterns of mafic alkaline magmas: Application to eruptions at Mt. Etna
Exponential Decay Of Concentration Variance During Magma Mixing: Robustness Of A Volcanic Chronometer And Implications For The Homogenization Of Chemical Heterogeneities In Magmatic Systems
Matrix imaging as a tool for high-resolution monitoring of deep volcanic plumbing systems with seismic noise
Institut Langevin, ESPCI Paris, PSL University, CNRS（朗之万研究所，巴黎高等物理化工学院，巴黎文理研究大学，法国国家科学研究中心）；Institut de Physique du Globe de Paris, Université Paris Cité, CNRS（巴黎地球物理研究所，巴黎西岱大学，法国国家科学研究中心）
