Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloMulti-temporal analysis of the role of check dams in a debris-flow channel: Linking structural and functional connectivity
Anno di pubblicazione2019
Autore/iCucchiaro S., Cazorzi F., Marchi L., Crema S., Beinat A., Cavalli M.
Affiliazioni autoriDepartment of Land, Environment, Agriculture and Forestry, University of Padova, Via dell'Università 16, 35020 Legnaro, Italy Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Via delle Scienze, 206, 33100 Udine, Italy National Research Council of Italy, Research Institute for Geo-Hydrological Protection (CNR IRPI), Corso Stati Uniti, 4, 35127 Padova, Italy Polytechnic Department of Engineering and Architecture, University of Udine, Via delle Scienze, 206, 33100 Udine, Italy
Autori CNR e affiliazioni
  • inglese
AbstractCheck dams represent one of themost common hydraulic engineering solution to manage debris-flow risk.However, the design of these structures only rarely considers their impact on sediment connectivity and sediment fluxes, both at the channel reach and catchment scale. In the last two decades, High-Resolution Topography (HRT) provided fundamental data to analyse the morphology evolution of landscapes through the realization of sequential DTMs (Digital Terrain Models) and DTMs of Difference (DoDs). In the context of mountain catchments, HRT offers essential information on the evolution of erosion and deposition patterns and allows the application of multi-temporal geomorphometric indexes that can enrich the DoDs analysis with important data as the assessment of sediment connectivity. In this research, multi-temporal LiDAR-derived DTMs were used to derive DoDs and to perform a multi-temporal analysis of an index of sediment connectivity (IC) in three reaches of a debris-flow channel (Moscardo torrent, eastern Italian Alps) where several check dams have been built over time. The research aims at outlining the effects of torrent controlworks on sediment dynamics in steep channels affected by frequent debris flows. The integration of the difference of IC with DoD maps allowed quantifying the impact of newly built check dams on changes in sediment pathways and related erosion processes, highlighting a close relationship between structural and functional connectivity: in areas where erosive processes prevailed, therewere increases in connectivity,while deposition areas showed a decrease of IC. The geomorphometric analyses show that the new check dams have affected the sediment transfer along the main channel but also the hillslope-to-channel connectivity by altering sediment pathways. In the Moscardo torrent, however, the strong impact of these structures on sediment transfer is not matched by long-termeffectiveness in debris-flow control.
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RivistaGeomorphology (Amst.)
Attiva dal 1987
Editore: Elsevier - Oxford ;
Paese di pubblicazione: Paesi Bassi
Lingua: inglese
ISSN: 0169-555X
Titolo chiave: Geomorphology (Amst.)
Titolo proprio: Geomorphology. (Amst.)
Titolo abbreviato: Geomorphology (Amst.)
Numero volume della rivista345
Fascicolo della rivista-
Verificato da refereeSì: Internazionale
Stato della pubblicazionePublished version
Indicizzazione (in banche dati controllate)
  • Scopus (Codice:2-s2.0-85071382694)
Parole chiaveCheck dam, Debris flow, Sediment connectivity, Index of Connectivity, Multi-temporal analysis, DoD
Link (URL, URI)
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Strutture CNR
  • IRPI — Istituto di ricerca per la protezione idrogeologica
Moduli/Attività/Sottoprogetti CNR
  • DTA.AD003.027.001 : Geomorfometria e dinamiche del sedimento nei bacini montani
Progetti Europei-