Characteristics of Earthquake Cycles: A Cross-Dimensional Comparison of 0D to 3D Numerical Models
| العنوان: | Characteristics of Earthquake Cycles: A Cross-Dimensional Comparison of 0D to 3D Numerical Models |
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| المؤلفون: | Li, M., Pranger, C., van Dinther, Y., Tectonics |
| المساهمون: | Tectonics |
| المصدر: | Journal of Geophysical Research: Solid Earth, 127(8), 1 Journal of Geophysical Research: Solid Earth, 127 (8) |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | numerical modeling, Geophysics, Geochemistry and Petrology, Space and Planetary Science, cross-dimensional comparison, Earth and Planetary Sciences (miscellaneous), earthquake sequence |
| الوصف: | High-resolution computer simulations of earthquake sequences in three or even two dimensions pose great demands on time and energy, making lower-cost simplifications a competitive alternative. We systematically study the advantages and limitations of simplifications that eliminate spatial dimensions in quasi-dynamic earthquake sequence models, from 3D models with a 2D fault plane down to 0D or 1D models with a 0D fault point. We demonstrate that, when 2D or 3D models produce quasi-periodic characteristic earthquakes, their behavior is qualitatively similar to lower-dimension models. Certain coseismic characteristics like stress drop and fracture energy are largely controlled by frictional parameters and are thus largely comparable. However, other observations are quantitatively clearly affected by dimension reduction. We find corresponding increases in recurrence interval, coseismic slip, peak slip velocity, and rupture speed. These changes are to a large extent explained by the elimination of velocity-strengthening patches that transmit tectonic loading onto the velocity-weakening fault patch, thereby reducing the interseismic stress rate and enhancing the slip deficit. This explanation is supported by a concise theoretical framework, which explains some of these findings quantitatively and effectively estimates recurrence interval and slip. Through accounting for an equivalent stressing rate at the nucleation size h* into 2D and 3D models, 0D or 1D models can also effectively simulate these earthquake cycle parameters. Given the computational efficiency of lower-dimensional models that run more than a million times faster, this paper aims to provide qualitative and quantitative guidance on economical model design and interpretation of modeling studies. Journal of Geophysical Research: Solid Earth, 127 (8) ISSN:2169-9313 ISSN:0148-0227 ISSN:2169-9356 |
| وصف الملف: | application/pdf; application/application/pdf |
| اللغة: | English |
| تدمد: | 2169-9313 0148-0227 2169-9356 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba7566149da73a39b54ae8ac8beb8a42 https://dspace.library.uu.nl/handle/1874/422975 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....ba7566149da73a39b54ae8ac8beb8a42 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 21699313 01480227 21699356 |
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