Seismic Monitoring of Baseflow and Groundwater Changes in the Yellowstone National Park
Abstract Relative seismic velocity changes (dv/v) are being increasingly used to monitor changes in groundwater. However, it remains challenging to verify its implementation in watersheds without direct groundwater well measurements. In this study, we conduct a 12‐year dv/v observation in a watershe...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2025-02-01
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| Series: | Geophysical Research Letters |
| Online Access: | https://doi.org/10.1029/2024GL111352 |
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| Summary: | Abstract Relative seismic velocity changes (dv/v) are being increasingly used to monitor changes in groundwater. However, it remains challenging to verify its implementation in watersheds without direct groundwater well measurements. In this study, we conduct a 12‐year dv/v observation in a watershed of the Yellowstone National Park (YNP). We find that the seasonal fluctuations and long‐term trend of the measured dv/v are highly correlated with the estimated baseflow, which serves as a constraint for groundwater changes. We integrate the estimated baseflow into a poroelastic mechanism and conduct two dv/v simulations based on pressure diffusion. These simulations closely match with our observed dv/v variations. In addition, our analysis suggest that the measured dv/v is primarily influenced by hydrologic pressure diffusion rather than surface air temperature. We conclude that the baseflow analysis can further enhance the seismic monitoring of groundwater changes. |
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| ISSN: | 0094-8276 1944-8007 |