Geoscientific Instrumentation, Methods and Data Systems
Geoscientific Instrumentation, Methods and Data Systems
GI
Articles | Volume 14, issue 2
Articles | Volume 14, issue 2
https://doi.org/10.5194/gi-14-513-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gi-14-513-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 14, issue 2
Research article
 | 
17 Dec 2025
Research article |  | 17 Dec 2025

High-speed infrared thermography for measuring flash temperatures in sheared fault gouge analogues

Chien-Cheng Hung and André Rik Niemeijer

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Short summary
During coseismic slip, rapid fault sliding generates heat, triggering processes that weaken fault materials. Flash heating at stressed contacts is a key dynamic weakening mechanism, but data on flash temperatures in sheared gouge are limited. We built an experimental setup with a high-speed infrared camera to capture in-situ thermal images during rapid shearing to determine how peak flash temperature varies with conditions and compare with theoretical predictions.
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