Colocated observations of strain and pore pressure offer remarkable insight into fluid-rock interactions over a wide range of scales. In California, they offer an unprecedented glimpse into natural variations in shallow crustal properties around active plate boundary faults, in both space and time. In particular, they reveal an interaction between crustal permeability and crustal strain accumulation, which suggests that permeability evolves over the interseismic period as strain rates do. In this talk I’ll discuss recent findings in detail, and highlight some recent technological developments that make the prospect of having a dense borehole observatory tractable in the near-future.
About the Speaker: Andrew Barbour, U.S. Geological Survey
Andrew is a research geophysicist in the Induced Seismicity group at the U.S. Geological Survey, Menlo Park. His research focuses on improving our understanding of how stress changes from natural and anthropogenic sources (i.e., earthquake rupture and/or fluid injection) lead to deformation, seismicity patterns, fluid flow, and pore pressure in the Earth’s crust. Andrew is particularly interested in observations near active fault systems.
Hosted by: Martin Schoenball