Broadband, high-resolution strain is a new signal that has seen limited use in CO₂ storage or geothermal exploration, largely because of limitations in instrumentation and data analyses. This project is demonstrating a method for improving the ability to track pressure and strain changes in order to identify possible CO₂ release pathways. They will be evaluating multiple types of point and multi-component instruments using innovative optical fiber sensor fabrication techniques to measure multiple components of strain. Theoretical analyses using analytical and numerical solutions to fully coupled poroelastic models are also being integrated with an innovative hybrid inverse model to interpret strain measurement signals. The instrumentation and interpretation methods will be demonstrated at a CO₂ storage analog site in Oklahoma.