**Cancelled** Seismo Lab Seminar

With climate change and population growth, humanity faces critical challenges associated with water security and clean energy transition. Tackling these issues requires high-resolution monitoring and a refined understanding of fluid systems, such as groundwater and geothermal reservoirs, hidden in the Earth's shallow subsurface. In this seminar, I will introduce a novel, cost-effective approach for aquifer monitoring using passive seismic interferometry. The validity and promise of this approach will be demonstrated through case studies of aquifers across Greater Los Angeles. I will showcase how the seismic approach offers new insights into the understanding of aquifer dynamics in response to climate extremes and anthropogenic activities. Lastly, I will present ongoing efforts that advance the use of seismic interferometry and scattered wavefields to analyze 4-dimensional changes in subsurface systems.