Studying open fractures - Rotation PIV results (by StrucGeology)
Dr. Marc Holland and Dr. Heijn van Gent use cohesive hemihydrate powder to study the formation of open fractures in the Koa’e fault system located on Hawai’i . (…) The digital images we collect during these experiments are then submitted to a digital image correlation technique called Particle Image Velocimetry (PIV). PIV calculates the deformation field of the experiment.
In this video, we show the raw images from the experiments, overlain with the rotation component of the deformation field. This video is taken from the MSc thesis of Heijn van Gent, which was published in JSG in 2010. Clearly shown are the faults (thetic faults are blue, anti-thetic faults are green) and the rotating block at the surface.