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dc.contributor.authorTang, Hui
dc.contributor.authorMcGuire, Luke A.
dc.contributor.authorRengers, Francis K.
dc.contributor.authorKean, Jason W.
dc.contributor.authorStaley, Dennis M.
dc.contributor.authorSmith, Joel B.
dc.date.accessioned2019-10-09T20:59:39Z
dc.date.available2019-10-09T20:59:39Z
dc.date.issued2019-08-16
dc.identifier.citationTang, H., McGuire, L. A., Rengers, F. K., Kean, J. W., Staley, D. M., & Smith, J. B. ( 2019). Developing and testing physically based triggering thresholds for runoff‐generated debris flows. Geophysical Research Letters, 46, 8830– 8839. https://doi.org/10.1029/2019GL083623en_US
dc.identifier.issn0094-8276
dc.identifier.doi10.1029/2019gl083623
dc.identifier.urihttp://hdl.handle.net/10150/634724
dc.description.abstractRunoff in steep channels is capable of transitioning into debris flows with hazardous implications for downstream communities and infrastructure, particularly in alpine landscapes with minimal vegetation and areas recently disturbed by wildfire. Here, we derive thresholds for the initiation of runoff-generated debris flows based on critical values of dimensionless discharge and Shields stress. These thresholds are derived by using a numerical model to estimate the hydrodynamic conditions coinciding with the timing of debris flow activity in a recently burned basin. A benefit of hydrodynamic thresholds is that they can be used to assess debris flow likelihood based on measurable hydrologic and geomorphic parameters and therefore provide more universal criteria for quantifying the runoff-to-debris flow transition in landscape evolution studies and hazard assessments. We then demonstrate how hydrodynamic thresholds can be used to estimate rainfall intensity-duration thresholds for runoff-generated debris flows without the need for historic debris flow observations.en_US
dc.description.sponsorshipU.S. Geological Survey (USGS) Landslide Hazards ProgramUnited States Geological Surveyen_US
dc.language.isoenen_US
dc.publisherAMER GEOPHYSICAL UNIONen_US
dc.rights©2019. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en_US
dc.titleDeveloping and Testing Physically Based Triggering Thresholds for Runoff‐Generated Debris Flowsen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Dept Geoscien_US
dc.identifier.journalGEOPHYSICAL RESEARCH LETTERSen_US
dc.description.noteOpen access articleen_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.volume46
dc.source.issue15
dc.source.beginpage8830-8839
refterms.dateFOA2019-10-09T20:59:40Z


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