Laboratory landquakes: Insights from experiments into the high-frequency seismic signal generated by geophysical granular flows

Abstract

We conducted novel laboratory experiments to test five existing models for the high-frequency seismic signals generated by granular flows • The 'thin-flow' model of Farin et al. (2019) was the most accurate and makes predictions consistent with empirical observations • The ratio between the mean and fluctuating forces exerted by a granular flow varies greatly, determined by an inertial number of the flow

Laboratory landquakes: Insights from experiments into the high-frequency seismic signal generated by geophysical granular flows

“…We recall that W denotes the channel's width and θ its angle of inclination; that X, Y , and H denote the length, width, and thickness of the plate; and that t d and ∆t c denote the delay before and the duration of the high-speed camera's recording, respectively. These and all other variables are listed in S1 and all code used to perform these analyses is available at Arran et al (2020).…”

Laboratory Landquakes: Insights From Experiments Into the High‐Frequency Seismic Signal Generated by Geophysical Granular Flows

“…These and all other variables are listed in Text S1 and all code used to perform these analyses is available at Arran et al. (2021).…”

“…Experimental data are available at the Pangaea repository (Arran et al., 2020), while computations were performed and plots produced with the summary data and code at Zenodo (Arran et al., 2021), using NumPy (Harris et al., 2020), Matplotlib (Hunter, 2007), and pandas (McKinney, 2010).…”