Description
Directional Cooling-Induced Fracturing (DCIF) experiments were conducted on a short, cylindrical sample of Westerly granite (diameter = 4 inches, height ~ 2 inches). Liquid nitrogen was poured in a copper cup attached to the top of the sample, and the resulting acoustic emissions (AEs) and temperature changes on the surface of the sample were monitored. The obtained AEs were used to determine the microcracking source locations and amplitude, and the associated moment tensors. Included in this submission is an animation of the AEs, a graphic displaying the temperature changes, and the measured data.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| AE Movie.avi | Unknown | Animation of located AE events in the sample over time. This also shows tomographically determined seismic (P-wave) velocity distribution using the SIRT method (simultaneous iterations reconstruction technique). | Open resource |
| AE Movie Colorbar.tif | TIFF | Velocity scale for tomography images in the "AE Movie.avi" file. | Open resource |
| Metadata README.docx | Doc | This document summarizes the descriptions for the currently submitted data set. | Open resource |
| Thermocouple Graphic.TIF | TIFF | Graphical presentation of the thermocouple reading data in "Thermocouple Data.txt" | Open resource |
| Thermocouple Data.TXT | Text | Data table for thermocouple temperature readings as a function of time. Time T=0s is when liquid nitrogen was poured. | Open resource |
Tags
- acoustic-emissions
- directional-cooling
- directional-cooling-induced-fracturing
- fracture
- geophysics
- geothermal
- granite
- induced-fracturing
- laboratory-experiment
- liquid-nitrogen
- microcracking
- moment-tensor
- seismic
- stimulation
- stress
- temperature
- temperature-changes
- thermal
- thermal-cracking
- tomography
- velocity
- wellbore
- westerly-granite