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  A surrogate-based strategy for analyzing post-fire debris flow inundation hazards

Spiller, E., McGuire, L., Patra, A., Patel, P., Pitman, B. (2023): A surrogate-based strategy for analyzing post-fire debris flow inundation hazards, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4416

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Datensatz-Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021847 Versions-Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021847_1
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 Urheber:
Spiller, Elaine1, Autor
McGuire, Luke1, Autor
Patra, Abani1, Autor
Patel, Palak1, Autor
Pitman, Bruce1, Autor
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Zusammenfassung: Wildfire is a catalyst for landcover change that can substantially increase the potential for devastating and destructive debris flow hazards. Debris flows initiate after fires when surface water runoff rapidly erodes sediment on steep slopes. Numerical models of post-fire debris flow bulking and runout are extremely computationally intensive. These models depend on poorly constrained and difficult to measure parameters related to fire-altered soil and vegetation, some of which change in time. Further, the development of debris flows (as opposed to clear flows) also depends on the rainfall intensity of potential storms. To date, modeling-based hazard analysis has focused on “if" a debris flow might be triggered on a given fire scared hillside, and not on the extent or footprint of potential debris flow runouts. We employ statistical emulators of debris flow model output to quantify uncertainties and aid in model-based hazard assessments of post-fire debris flow inundation. As a test case, we apply this methodology to the January 2018 Montecito debris flows which initiated after the Thomas Fire.

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Sprache(n): eng - Englisch
 Datum: 2023-07-112023-07-11
 Publikationsstatus: Final veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.57757/IUGG23-4416
 Art des Abschluß: -

Veranstaltung

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Titel: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Veranstaltungsort: Berlin
Start-/Enddatum: 2023-07-11 - 2023-07-20

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Titel: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Genre der Quelle: Konferenzband
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Potsdam : GFZ German Research Centre for Geosciences
Seiten: - Band / Heft: - Artikelnummer: - Start- / Endseite: - Identifikator: -