The Laguna del Maule volcanic field in Chile has been exhibiting unrest since 2005. New GPS and InSAR data reveal a second episode of accelerated deformation beginning in late 2016 and continuing through May 2020, with an uplift rate > 290 mm/year between 2019 and 2020. To explain the spatial and temporal pattern of deformation, we apply a dynamic model of viscous magma flowing through a conduit into a fluid-filled reservoir surrounded by a heterogeneous, viscoelastic crust. A Monte Carlo procedure optimizes the ellipsoid reservoir geometry and the inlet pressure history. The two episodes of accelerating uplift are each modeled with a pressure increase rate of \(\sim \)9 MPa/year. Since 2016, 0.10 km³ of magma was injected into the system for a total of 0.37 km³ since 2005.

智利Laguna del Maule火山场自2005年以来一直表现出动荡。新的GPS和InSAR数据显示，第二次加速形变始于2016年底，一直持续到2020年5月，在2019年至2020年期间上升速率> 290毫米/年为了解释变形的时空格局，我们应用了一种粘性岩浆的动态模型，该模型通过导管流入到一个充满非均质粘弹性地壳的充满流体的储层中。蒙特卡洛程序优化了椭圆形储层的几何形状和入口压力历史记录。加速隆起的两个集分别与建模的压力增加率\（\ SIM \） 9兆帕/年。自2016年以来，系统已注入0.10 km ³的岩浆，总计0.37 km ³ 自2005年以来。