Using integrated growth to delineate debris-flow inundation
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Abstract
Debris-flow volume is fundamental to mobility, yet many debris flows change volume as they travel. Growth can occur through diverse processes such as channel-bed entrainment, bank failures, aggregation of landslides, and coalescence of multiple flows. Integrating growth, either over upslope area or stream length, combines the effects of these growth processes and requires specification of only the growth zone extent and a growth factor. To delineate potential debris-flow inundation, we implement integrated growth factors and simple volume-area relations in a new USGS software package, Grfin Tools. We present two examples of forecasting debris-flow inundation – one using an area growth factor in Puerto Rico and another using a channel-length growth factor in Oregon, USA. The use of growth zones and growth factors enables scenario-based hazard assessments for geomorphic settings with debris-flow growth.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Using integrated growth to delineate debris-flow inundation |
| DOI | 10.1051/e3sconf/202341505021 |
| Volume | 4 |
| Year Published | 2023 |
| Language | English |
| Publisher | EDP Sciences |
| Contributing office(s) | Geology, Minerals, Energy, and Geophysics Science Center, Volcano Science Center |
| Description | 05021, 4 p. |
| Conference Title | 8th International Conference on Debris Flow Hazard Mitigation (DFHM8) |
| Conference Location | Torino, Italy |
| Conference Date | June 26-29, 2023 |
| Google Analytic Metrics | Metrics page |