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Tectonophysics
Title: Effect of grain size and grain size distribution on slip dynamics: An experimental analysis
Authors: Jeremy Randolph-Flagg, Jacqueline E. Reber
Affiliation: Department of Geological and Atmospheric Sciences, Iowa State University, Ames, IA 50011

DataShare: Iowa State UniversityÕs Open Research Data Repository

Description of data:

ÔImages.zipÕ: contains top down photos of the apparatus during experiments with small, medium and large grains at both low strain and high strain. It also contains one photo of the apparatus.

ÔVideos.zipÕ: contains a video of an experiment of all medium sized grains, and a video of an experiment with all large grains. The videos capture two minutes of shearing and are sped up to 2x speed.

ÔCSV files.zipÕ: contains .csv type data files from shear experiments. A folder called ÔStandardsÕ contains data from an experiment run with no grains (table_22) and experiments with small grains (S_91) and medium grains (M_49) both run at 13.0% void space. The folders containing data from experiments with only one grain size at the void space reported in our paper are labelled Small, Medium, and Large according to their contents. The files containing data from experiments of small and medium grains combined are in a subfolder titled ÔSmall and MediumÕ. The files containing data from experiments of medium and large grains combined are in a subfolder titled ÔMedium and LargeÕ. These csv files have four columns: 1) time in seconds 2) resistivity (which is used to find displacement) 3) pulling force in Newtons, and 4) input voltage. For our analysis resistivity is converted to displacement by dividing by the input voltage at each time step. We then multiply the result by 127 (the length of the resistivity cable in cm) to convert from relative extension to displacement in cm.

Number of files: 90
Size: 54.6 MB
File types: .csv, .jpg, .mp4