High fluid pressure may drive deep-seated slow slip and tremor
In short: Researchers reviewing geophysical and geological data found that deep-seated slow slip and tremor (SST) events likely occur in environments with high fluid pressure. These events, which include episodic tremor and slip, happen below the main earthquake-producing zones in subduction zones and strike-slip faults.
By combining geodetic and seismologic data with observations of exhumed rocks, researchers found that the SST source region is likely a fluid-rich habitat. They also observed that transient deformation in the geological record may scale with the tremor component of these events.
The review relies on synthesizing existing geophysical and geological observations, meaning it provides a high-level overview rather than a single new measurement.
Why it matters: Understanding the fluid-rich environments of deep faults could improve our models of earthquake dynamics.
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