 April 5, 2023 |
| April 5, 2023 |
Extended Data for Large–scale volcanic deposit fluidisation by dilute pyroclastic density currents
Nature Geoscience, 2023 |
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Right click to download the movies and the text files.
 Figure 1 |  Figure 2 |
|  Figure 4 |
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Code for the numerical simulation of the decompression Simplified and commented for an easiest understanding of the code. Run in Matlab or GNU Octave. |
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Data for the realisation of Fig. 4a (ratio Hf/H)
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Some examples of the experiments done: videos, pressure curves and synchronisation information.
Glass beads, h: 20 cm, Ps ini: 25 kPa, slope: 0°, tilt: 10°, cap: n°3, dP/dt max: 18 kPa/s, dP/dt mean: 5 kPa/s
video: 25 Hz, sensors: 1000 Hz, image at the start of the recording: 39, first image shown: 138, time of the start of the decompression: 3470 ms (image 178)
Glass beads, h: 20 cm, Ps ini: 25 kPa, slope: 10°, tilt: 10°, cap: n°3, dP/dt max: 15 kPa/s, dP/dt mean: 5 kPa/s
video: 25 Hz, sensors: 1000 Hz, image at the start of the recording: 96, first image shown: 143, time of the start of the decompression: 2180 ms (image 183)
Glass beads, h: 20 cm, Ps ini: 25 kPa, slope: 10°, tilt: 10°, cap: n°4, dP/dt max: 18 kPa/s, dP/dt mean: 6 kPa/s
video: 25 Hz, sensors: 1000 Hz, image at the start of the recording: 195, first image shown: 266, time of the start of the decompression: 2774 ms (image 306)
Glass beads, h: 20 cm, Ps ini: 25 kPa, slope: 0°, tilt: 10°, cap: n°4, dP/dt max: 18 kPa/s, dP/dt mean: 6 kPa/s
video: 25 Hz, sensors: 1000 Hz, image at the start of the recording: 95, first image shown: 156, time of the start of the decompression: 2520 ms (image 196)
Glass beads, h: 20 cm, Ps ini: 25 kPa, slope: 10°, tilt: 10°, cap: n°7, dP/dt max: 9 kPa/s, dP/dt mean: 3 kPa/s
video: 25 Hz, sensors: 1000 Hz, image at the start of the recording: 84, first image shown: 116, time of the start of the decompression: 1803 ms (image 156)
Glass beads, h: 20 cm, Ps ini: 25 kPa, slope: 0°, tilt: 10°, cap: n°7, dP/dt max: 8 kPa/s, dP/dt mean: 3 kPa/s
video: 25 Hz, sensors: 1000 Hz, image at the start of the recording: 113, first image shown: 201, time of the start of the decompression: 3205 ms (image 241)
Glass beads, h: 20 cm, Ps ini: 25 kPa, slope: 0°, tilt: 10°, cap: n°0, dP/dt max: 101 kPa/s, dP/dt mean: 88 kPa/s
video: 25 Hz, sensors: 1000 Hz, image at the start of the recording: 73, first image shown: 133, time of the start of the decompression: 2510 ms (image 173)
Glass beads, h: 20 cm, Ps ini: 25 kPa, slope: 0°, tilt: 10°, cap: n°0, dP/dt max: 97 kPa/s, dP/dt mean: 94 kPa/s
video: 25 Hz, sensors: 1000 Hz, image at the start of the recording: 300, first image shown: 408, time of the start of the decompression: 3690 ms (image 448)
Glass beads, h: 20 cm, Ps ini: 25 kPa, slope: 0°, tilt: 10°, cap: n°10, dP/dt max: 53 kPa/s, dP/dt mean: 36 kPa/s
video: 25 Hz, sensors: 1000 Hz, image at the start of the recording: 44, first image shown: 88, time of the start of the decompression: 2100 ms (image 128)
Glass beads, h: 20 cm, Ps ini: 25 kPa, slope: 10°, tilt: 10°, cap: n°10, dP/dt max: 56 kPa/s, dP/dt mean: 36 kPa/s
video: 25 Hz, sensors: 1000 Hz, image at the start of the recording: 136, first image shown: 188, time of the start of the decompression: 2300 ms (image 228)
Glass beads, h: 20 cm, Ps ini: 25 kPa, slope: 0°, tilt: 10°, cap: n°11, dP/dt max: 31 kPa/s, dP/dt mean: 16 kPa/s
video: 25 Hz, sensors: 1000 Hz, image at the start of the recording: 91, first image shown: 227, time of the start of the decompression: 4405 ms (image 267)
Glass beads, h: 20 cm, Ps ini: 25 kPa, slope: 10°, tilt: 10°, cap: n°11, dP/dt max: 31 kPa/s, dP/dt mean: 15 kPa/s
video: 25 Hz, sensors: 1000 Hz, image at the start of the recording: 212, first image shown: 332, time of the start of the decompression: 4001 ms (image 372)
