Suplementary material (SM) Description of the videos
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Date
2025-01-31
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Journal ISSN
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Publisher
UNAM, Instituto de Geofísica
Abstract
This SM includes three videos that show two scenarios of rock fragmentation and mass flux dynamics triggered by rapid decompression: continuous and discontinuous. File S1 (N57Video) corresponds to the experiments N57, the discontinuous dynamics, and file S2 (N58Video) corresponds to experiment N58, the continuous dynamics. File S3 is a closeup of the fragmentation phase taken from experiment N57. This shows details of crack development and the related elasto-acoustic signals. We used Phantom High-Speed cameras V710 and V711. The videos were recorded at a rate of 20000 frames/s for experiment N57 and at 35000 frames/s for N58. To plot and synchronize the frames and the elasto acoustic signals (see Figures 6, 9 and 10), we developed a Python code using NumPy (Harris et al., 2020), SciPy (Gommers et al., 2020) and Matplotlib (Hunter, 2007) packages and the open-source library OpenCV for computer vision applications. The videos run at 10 frames/s.