Article Dans Une Revue Journal of Geophysical Research : Solid Earth Année : 2025

Community-Driven Code Comparisons for Simulations of Fluid-Induced Aseismic Slip

Valère R Lambert
  • Fonction : Auteur
  • PersonId : 1528029
Brittany A Erickson
Junle Jiang
  • Fonction : Auteur
Eric M Dunham
Taeho Kim
Jean Paul Ampuero
Frédéric Cappa
Pierre Dublanchet
Ahmed Elbanna
Yuri Fialko
  • Fonction : Auteur
Alice-Agnes Gabriel
Nadia Lapusta
Meng Li
Jasper Marcum
David May
Shumon Mia
So Ozawa
Casper Pranger
Ylona van Dinther
Yuyun Yang
  • Fonction : Auteur
Jeena Yun

Résumé

Numerical simulations of Sequences of Earthquakes and Aseismic Slip (SEAS) have rapidly progressed to address fundamental problems in fault mechanics and provide self-consistent, physics-based frameworks to interpret and predict geophysical observations across spatial and temporal scales. To advance SEAS simulations with rigor and reproducibility, we pursue community efforts to verify numerical codes in an expanding suite of benchmarks. Here we present code comparison results from a new set of quasi-dynamic benchmark problems BP6-QD-A/S/C that consider an aseismic slip transient induced by changes in pore fluid pressure consistent with fluid injection and diffusion in fault models with different treatments of fault friction. Ten modeling groups participated in problems BP6-QD-A and BP6-QD-S considering rate-and-state fault models using the aging (-A) and slip (-S) law formulations for frictional state evolution, respectively, allowing us to better understand how various computational factors across codes affect the simulated evolution of pore pressure and aseismic slip. Comparisons of problems using the aging versus slip law, and a constant friction coefficient (-C), illustrate how aseismic slip models can differ in the timing and amount of slip achieved with different treatments of fault friction given the same perturbations in pore fluid pressure. We achieve excellent quantitative agreement across participating codes, with further agreement attained by ensuring sufficiently fine time-stepping and consistent treatment of boundary conditions. Our benchmark efforts offer a community-based example to reveal sensitivities of numerical modeling results, which is essential for advancing multi-physics SEAS models to better understand and construct reliable predictive models of fault dynamics.

Fichier principal
Vignette du fichier
Lambert_et_al_JGR_2025.pdf (15.95 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte
Licence

Dates et versions

hal-05019269 , version 1 (03-04-2025)

Licence

Identifiants

Citer

Valère R Lambert, Brittany A Erickson, Junle Jiang, Eric M Dunham, Taeho Kim, et al.. Community-Driven Code Comparisons for Simulations of Fluid-Induced Aseismic Slip. Journal of Geophysical Research : Solid Earth, 2025, ⟨10.1029/2024JB030601⟩. ⟨hal-05019269⟩
332 Consultations
51 Téléchargements

Altmetric

Partager

  • More