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1 change: 1 addition & 0 deletions articles/putting-a-fault-in-a-mesh/metadata.yml
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Expand Up @@ -31,3 +31,4 @@ ghost_tags:
- Underworld Code
figures: 3
source: native
banner_credit: "Photo by <a href=\"https://unsplash.com/@di2pra?utm_source=underworld-technical-notes&utm_medium=referral&utm_campaign=api-credit\">Pradheep Rajendirane</a> / <a href=\"https://unsplash.com/?utm_source=underworld-technical-notes&utm_medium=referral&utm_campaign=api-credit\">Unsplash</a>"
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Expand Up @@ -17,6 +17,7 @@ authors:
affiliations:
- Australian National University
license: CC-BY-4.0
banner: figures/banner.jpg
bibliography:
- references.bib
keywords:
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article_version: 1.0.0
software_version: underworld3 0.0.0
---
<div class="uwtn-banner"><img src="figures/banner.jpg" alt=""><div class="uwtn-credit">Photo by <a href="https://unsplash.com/@di2pra?utm_source=underworld-technical-notes&utm_medium=referral&utm_campaign=api-credit">Pradheep Rajendirane</a> / <a href="https://unsplash.com/?utm_source=underworld-technical-notes&utm_medium=referral&utm_campaign=api-credit">Unsplash</a></div></div>

Faults can dominate the dynamic behaviour of Earth systems at scales from the entire planet to a few 10s of metres. They are an extreme example of localisation: feedback between forcing and response that results in self-reinforcing weakening that does not have a brake at the largest scale. Faults are *extreme* in the sense that their natural thickness is orders of magnitude below that of a typical tectonic simulation.

At the tectonic scale, a fault is an infinitesimally thin surface across which the rock moves discontinuously by overcoming a frictional resistance. A finite element mesh (the mesh we use in Underworld) is a mechanism for representing continuous fields and there is not a native mechanism that perfectly represents a fault.
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