Group A, Poster #131, Fault and Rupture Mechanics (FARM)
What Controls the Shallow Fault Damage Zone and Fluid Flow? Insights from New High-Resolution Seismic Imaging
Poster Image:
![](https://files.scec.org/s3fs-public/publication_12904.jpg?czXG4r.5UoAy5rzTVq0S4LjNEs8cFJ8y)
Poster Presentation
2023 SCEC Annual Meeting, Poster #131, SCEC Contribution #12904 VIEW PDF
hallow fault zone (~400 m below the seafloor). Our approach involves a multi-trace similarity technique to identify discontinuities in the seismic data attributed to faults and fractures. The outcomes of this fault detection approach reveal notably diverse damage patterns in the vicinity of the fault on adjacent seismic profiles. However, a discernible average damage zone pattern emerges by stacking damage detection profiles along strike. The stacked damage zone results show that damage decays with distance and is concentrated around the active fault strand, confirmed in this study. Additionally, we observe that the width of the damage zone increases with displacement, while it does not narrow with depth in sedimentary rock overlying the basement (~ 2 km depth). Furthermore, our observations reveal a correlation between fault damage and seafloor seeps visible in the water column, suggesting that damage plays a role in controlling fluid flow around the fault.
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