Geo-INQUIRE installation: MP-PSHA - Towards Physics-based Probabilistic Seismic Hazard Analysis (TA2-541-11)

Hosting team: Mathilde Marchandon (LMU, Germany), Iris Christadler (LMU, Germany), Vikas Kurapati (TUM, Germany)

Transnational access principal investigator: Neha (National Taiwan University - NTU, Taiwan)

ORCID: https://orcid.org/0000-0002-7721-4985

Homepage: https://scholar.google.com/citations?user=JhEChooAAAAJ&hl=en

LinkedIn: https://www.linkedin.com/in/neha-choudhary-80a621231/

Transnational access team: Prof. Ray Y. Chuang, Department of Geography, National Taiwan University,
Taiwan

Project title: Physics-based Dynamic Rupture Modeling for Taiwan

Project acronym: phyDRMT

Project report ID: C3_TA2-541-11_2

Date of visit: 11 February - 2 March 2026, access to Leonardo continues

Geo-INQUIRE Virtual Access: 

Data/Products: The primary outcome of the access period was the successful establishment of a complete workflow for physics-based dynamic rupture modeling of Taiwan earthquakes using SeisSol. The project resulted in improved expertise in dynamic rupture theory, HPC-based earthquake simulations, mesh generation, fault geometry construction, and parameter selection for dynamic rupture studies. Simulation-ready fault geometries and computational meshes were successfully developed for the 2022 Taitung earthquake sequence. Preliminary test simulations demonstrated the feasibility of the modeling framework and provided initial insights into the influence of fault geometry and model parameters on rupture behavior. These simulations also helped identify key parameters that will require further refinement in subsequent stages of the project.
At the current stage, the project remains in the model development and testing phase. Additional simulations will be required to optimize model parameters, refine fault geometries, and explore a broader range of physically plausible rupture scenarios. Future numerical experiments will focus on obtaining robust dynamic rupture models capable of reproducing the observed characteristics of the 2022 Taitung earthquake sequence. The future simulation results will be compared with published seismological, geodetic, and geological observations, including earthquake source models, GNSS measurements, InSAR-derived deformation fields, and geological fault constraints. These comparisons will be used to validate the numerical models and improve understanding of rupture dynamics, fault interactions, and deformation processes within the Longitudinal Valley Fault system.
The outcomes of this work are expected to contribute to peer-reviewed journal publications and presentations at international scientific conferences. Furthermore, in accordance with the objectives of the Geo-INQUIRE programme, the developed workflows, simulation setups, associated datasets, and future modeling results will be shared through Geo-INQUIRE infrastructures following FAIR (Findable, Accessible, Interoperable, and Reusable) data principles, supporting future collaborative research and reproducible scientific investigations.

Project report:  phyDRMT by Neha