Fig. 2: Experimental setup and phenomenology. | Nature Communications

Fig. 2: Experimental setup and phenomenology.

From: The perpetual fragility of creeping hillslopes

Fig. 2

a DWS setup: an expanded laser beam is projected onto a granular heap; a camera collects speckle images from within the white rectangle. b Strain-rate map at t = 0, the moment after the pile is prepared, and (c) 11 days after preparation showing that particle activity persists.

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