Community‐Driven Code Comparisons for Simulations of Fluid‐Induced Aseismic Slip
Abstract 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.
Authors
- Brittany A. Erickson (ORCID: https://orcid.org/0000-0001-9457-8572)
- Alice‐Agnes Gabriel (ORCID: https://orcid.org/0000-0003-0112-8412)
- Marco Maria Scuderi (ORCID: https://orcid.org/0000-0001-5232-0792)
- So Ozawa (ORCID: https://orcid.org/0000-0002-6507-6925)
- Yuri A. Fialko (ORCID: https://orcid.org/0000-0002-6161-8467)
- Eric M. Dunham (ORCID: https://orcid.org/0000-0003-0804-7746)
- Pierre Romanet (ORCID: https://orcid.org/0000-0001-6232-4906)
- J.M. Marcum
- Dave A. May (ORCID: https://orcid.org/0000-0003-2471-7498)
- Yuyun Yang (ORCID: https://orcid.org/0000-0001-5260-8593)
- Valère Lambert (ORCID: https://orcid.org/0000-0002-6174-9651)
- Jeena Yun (ORCID: https://orcid.org/0000-0002-2215-4647)
- Md Shumon Mia (ORCID: https://orcid.org/0000-0002-7982-8809)
- Taeho James Kim (ORCID: https://orcid.org/0000-0002-2560-7728)
- Frédéric Cappa (ORCID: https://orcid.org/0000-0003-4859-8024)
- Jean‐Paul Ampuero (ORCID: https://orcid.org/0000-0002-4827-7987)
- N. Lapusta (ORCID: https://orcid.org/0000-0001-6558-0323)
- Ylona van Dinther (ORCID: https://orcid.org/0000-0002-4273-8287)
- Ahmed Elbanna (ORCID: https://orcid.org/0000-0003-4079-2607)
- Ryosuke Ando (ORCID: https://orcid.org/0000-0002-6205-3699)
- Casper Pranger (ORCID: https://orcid.org/0000-0002-8943-896X)
- Pierre Dublanchet (ORCID: https://orcid.org/0000-0003-4903-0246)
- Junle Jiang (ORCID: https://orcid.org/0000-0002-8796-5846)
- Meng Li (ORCID: https://orcid.org/0000-0001-9459-7167)
Institutions
- California Institute of Technology (US)
- Centre National de la Recherche Scientifique (FR)
- Scripps Institution of Oceanography (US)
- Bunkyo University (JP)
- University of Illinois Urbana-Champaign (US)
- Chinese University of Hong Kong (HK)
- University of Oregon (US)
- Bangladesh University of Engineering and Technology (BD)
- University of California, Santa Cruz (US)
- Utrecht University (NL)
- Université Côte d'Azur (FR)
- University of California San Diego (US)
- Observatoire de la Côte d’Azur (FR)
- Institut de Recherche pour le Développement (FR)
- École Nationale Supérieure des Mines de Paris (FR)
- The University of Tokyo (JP)
- Ludwig-Maximilians-Universität München (DE)
- Sapienza University of Rome (IT)
- University of Oklahoma (US)
- Stanford University (US)
Publication Details
- Journal
- Journal of Geophysical Research Solid Earth
- Published
- 2025-04-01
- DOI
- https://doi.org/10.1029/2024jb030601
- Citations
- 5
- Primary Topic
- earthquake and tectonic studies
- Type
- article
- Field-Weighted Citation Impact
- 9.33
Funders
- National Science Foundation
- Research Grants Council, University Grants Committee
- European Research Council
- Japan Society for the Promotion of Science