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| Titel |
Patterns of debris-flow erosion, transport, and deposition across the upper Adige River, Italy |
| VerfasserIn |
Francesco Brardinoni, Rosanna Sosio |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250078470
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| Zusammenfassung |
| Debris flows are effective agents of sediment transfer in mountain drainage basins. They typically convey colluvial and/or glacigenic deposits to basin mouth, connecting hillslopes and low-order streams to alluvial fans and major valley floors. They dominate topographic change and sediment dynamics in steep, low-order streams and pose serious hazards to residential areas and infrastructure. To advance understanding of the debris-flow geomorphic process domain at the regional scale we analyze a historical database of debris flows from 82 headwater basins of the upper Adige River, north-eastern Italy.
This database reports systematically (since 1998) a number of quantitative attributes on single debris-flow events including the classification of the drainage network into initiation, transportation, and deposition reaches. By combining information on channel-reach mapping, LiDAR-derived digital topography, and geological and Quaternary materials mapping we: (i) characterize the principal topographic conditions in which debris-flow initiation, transportation and deposition occur; and (ii) constrain shallow landslide, debris flow, and alluvial domains, yet documenting the variability associated with different lithological units and glacigenic sediment availability. |
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