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Figure F15. Pressure transient (tides filtered) associated with a seismic swarm in the northern part of Middle Valley. The transient reflects dilatational elastic strain, postseismic strain, and hydrologic diffusion (Davis et al., 2004). Watching future events like this and others seen in Fig. F14 with observatories at both Holes 857D and 858G will allow the hydrologic and geodynamic components to be separated.

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