Responsible deployment of geologic carbon storage (CCUS), sustainable groundwater management, and mitigation of induced seismicity all depend on accurate characterization of subsurface fluid dynamics and rock properties. This session invites contributions advancing our understanding of coupled hydro-geomechanical processes in the subsurface, with emphasis on novel approaches to reservoir characterization—including anisotropy evaluation, heterogeneity quantification, and permeability estimation across scales. We welcome studies on pressure transient analysis, multi-phase fluid flow modeling, geophysical and hydrogeological characterization methods, CO2 plume monitoring and integrity assessment, seismicity triggered by fluid injection or extraction, and water resource impacts of subsurface energy operations. Contributions integrating field observations, laboratory experiments, numerical modeling, and data-driven or physics-guided machine learning methods are encouraged. The session bridges hydrology, geomechanics, and energy geoscience to address pressing challenges in the energy transition and water security.

• S - Seismology