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Principal Surface Fault Rupture Hazard: Moving Beyond Aggregate Displacement Metrics — arXiv:2610.08763

Source: arXiv (en)
Original: https://arxiv.org/abs/2610.08763
License (as archived): CC0-1.0
Archived: 2026-10-07T18:09:35.976Z
SHA-256 of the archived text: ee39c317c0c526a85944f933fc399759f9572fbcbd74e0a9c954a95a2c9efbb4
Stable URL of this page: https://metraipolis.com/documento/dc_a0804dfe7d8e

How to cite

Principal Surface Fault Rupture Hazard: Moving Beyond Aggregate Displacement Metrics — arXiv:2610.08763 — arXiv (en), https://arxiv.org/abs/2610.08763 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_a0804dfe7d8e (Metraipolis archive dc_a0804dfe7d8e, sha256 ee39c317c0c526a85944f933fc399759f9572fbcbd74e0a9c954a95a2c9efbb4)

BibTeX

@misc{dca0804dfe7d8e,
  title = {Principal Surface Fault Rupture Hazard: Moving Beyond Aggregate Displacement Metrics — arXiv:2610.08763},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2610.08763},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_a0804dfe7d8e; sha256 ee39c317c0c526a85944f933fc399759f9572fbcbd74e0a9c954a95a2c9efbb4},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2610.08763. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Structures crossing active faults are subjected to permanent ground deformation that can impose severe demands on infrastructure. Although probabilistic fault displacement hazard analysis (PFDHA) has advanced considerably, existing principal fault displacement models use aggregate displacement, implicitly assuming that overlapping rupture strands contribute simultaneously to site demand. This assumption is suitable for regional hazard characterization but does not represent finite structural dimensions, where only a subset of ruptures may intersect a structure. This study presents a probabilistic framework that reformulates aggregate principal displacement into a rupture-level representation for infrastructure-specific hazard assessment. Using the Fault Displacement Hazard Initiative (FDHI) database of 75 surface-rupturing earthquakes, principal rupture strands are reconstructed from mapped rupture geometries and displacement observations using event- and segment-based coordinate systems. The framework models three quantities: (1) the number of overlapping principal ruptures, (2) partitioning of aggregate displacement among individual rupture strands while preserving the aggregate displacement budget, and (3) the spatial distribution of rupture strands relative to the primary fault trace. These components are integrated into a generalized PFDHA formulation accounting for earthquake magnitude, style of faulting, rupture curvature, structural footprint, and fault-trace location uncertainty. Benchmark fault-crossing applications demonstrate the framework's ability to estimate the probability that individual rupture strands intersect a structure and the associated displacement demand. The framework provides a physically consistent extension of aggregate-based models and a basis for infrastructure-specific PFDHA that explicitly accounts for rupture geometry and finite crossing dimensions.

Tema degli esploratori: terra, clima ed energia (elenco arXiv physics.geo-ph, nuovi lavori del giorno).
Categorie arXiv: Geophysics (physics.geo-ph).
Pagina del lavoro: https://arxiv.org/abs/2610.08763 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-10-07T17:42:15.138Z dalla pagina https://arxiv.org/list/physics.geo-ph/new (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).