Articles | Volume 26, issue 4
https://doi.org/10.5194/nhess-26-1705-2026
https://doi.org/10.5194/nhess-26-1705-2026
Research article
 | 
14 Apr 2026
Research article |  | 14 Apr 2026

Quantifying fire effects on debris flow runout using a morphodynamic model and stochastic surrogates

Elaine T. Spiller, Luke A. McGuire, Palak Patel, Abani Patra, and E. Bruce Pitman

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Cited articles

Alessio, P., Dunne, T., and Morell, K.: Post-wildfire generation of debris-flow slurry by rill erosion on colluvial hillslopes, J. Geophys. Res.-Earth, 126, e2021JF006108, https://doi.org/10.1029/2021JF006108, 2021. a, b, c
Barnhart, K. R., Jones, R. P., George, D. L., McArdell, B. W., Rengers, F. K., Staley, D. M., and Kean, J. W.: Multi-model comparison of computed debris flow runout for the 9 January 2018 Montecito, California post-wildfire event, J. Geophys. Res.-Earth, 126, e2021JF006245, https://doi.org/10.1029/2021JF006245, 2021. a, b, c, d
Barnhart, K. R., Miller, C. R., Rengers, F. K., and Kean, J. W.: Evaluation of debris-flow building damage forecasts, Nat. Hazards Earth Syst. Sci., 24, 1459–1483, https://doi.org/10.5194/nhess-24-1459-2024, 2024. a
Bayarri, M. J., Berger, J. O., Calder, E. S., Dalbey, K., Lunagómez, S., Patra, A. K., Pitman, E. B., Spiller, E. T., and Wolpert, R. L.: Using Statistical and Computer Models to Quantify Volcanic Hazards, Technometrics, 51, 402–413, https://doi.org/10.1198/TECH.2009.08018, 2009. a
Bayarri, M. J., Berger, J. O., Calder, E. S., Patra, A. K., Pitman, E. B., Spiller, E. T., and Wolpert, R. L.: A Methodology for Quantifying Volcanic Hazards, International Journal of Uncertainty Quantification, 5, 297–325, https://doi.org/10.1615/Int.J.UncertaintyQuantification.2015011451, 2015. a, b
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Short summary
Fire in steep landscapes increases the potential for debris flows that can develop during intense rainstorms. To explore possible debris flow hazards, we utilize a computational model of the physical processes of debris flow initiation and runout. Such process-based models are computationally intensive and of limited use in rapid hazard assessments. Thus we build statistical surrogate of these physical models to examine how inundation footprints vary with rainfall intensity and time since fire.
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