1887

Abstract

Summary

We employed a permanent active seismic source and seismic array to investigate temporal variations in seismic wave velocity through the Earth’s crust. Monitoring crustal changes is crucial for understanding earthquakes, volcanic eruptions, and fluid dynamics. This study focused on enhancing sensitivity to travel time variations, using extended stacking periods and capturing signal propagation beyond 80 km with frequencies between 15.11 and 22.11 Hz. Over 4.5-months, monitoring data revealed travel time variations related to rainfall and earthquakes with uncertainty estimates of 0.016% to 0.07% for proximate and remote seismometers. This precision allowed the detection of changes linked to pore pressure and fluid saturation despite high-frequency source constraints. The study establishes a comprehensive link between seismic activities and environmental events, offering valuable insights for fields like Carbon Capture and Storage (CCS). Understanding earthquake origins, whether natural or induced, is crucial for monitoring induced seismicity. The findings provide insights for further studies in geological and environmental monitoring, showcasing the effectiveness of the permanent seismic source in monitoring temporal travel time changes over distances exceeding 80 km with high accuracy.

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2024-05-13
2026-01-17

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References

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/content/papers/10.3997/2214-4609.202472087
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Observing Changes in Pore Pressure Using Controlled Permanent Seismic Source and Distributed Seismometer Network
Conference Proceedings 2024, 1 (2024); https://doi.org/10.3997/2214-4609.202472087
/content/papers/10.3997/2214-4609.202472087
/content/papers/10.3997/2214-4609.202472087
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