Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloRainfall and rockfalls in the Canary Islands: assessing a seasonal link
Anno di pubblicazione2020
FormatoElettronico
Autore/iMassimo Melillo, Stefano Luigi Gariano, Silvia Peruccacci, Roberto Sarro, Rosa Marìa Mateos, and Maria Teresa Brunetti
Affiliazioni autoriCNR IRPI, CNR IRPI, CNR IRPI, IGME, IGME, CNR IRPI
Autori CNR e affiliazioni
  • SILVIA PERUCCACCI
  • MARIA TERESA BRUNETTI
  • MASSIMO MELILLO
  • STEFANO LUIGI GARIANO
Lingua/e
  • inglese
AbstractRockfalls are frequent and harmful phenomena occurring in mountain ranges, coastal cliffs, and slope cuts. Although several natural processes occur in their formation and triggering, rainfall is one of the most common causes. The prediction of rock failures is of social significance for civil protection purposes and can rely on the statistical analysis of past rainfall conditions that caused the failures. The paper describes the analysis of information on rainfall-induced rockfalls in Gran Canaria and Tenerife, Canary Islands (Spain). An analysis of the monthly rainfall versus the monthly distribution of rockfalls reveals that they are correlated for most of the year, except in summer, when other triggers act to induce collapses. National and regional catalogs with hourly and daily rainfall measurements are used to reconstruct the cumulated amount (E) and the duration (D) of the rainfall responsible for the rock failures. Adopting a consolidated statistical approach, new ED rainfall thresholds for possible rockfall occurrence and the associated uncertainties are calculated for the two test sites. As far as is known, this is the first attempt to predict this type of failure using the threshold approach. Using the rainfall information, a map of the mean annual rainfall is obtained for Gran Canaria and Tenerife, and it is used to assess the differences between the thresholds. The results of this study are expected to improve the ability to forecast rockfalls in the Canary Islands in view of implementing an early-warning system to mitigate the rockfall hazard and reduce the associated risk.
Lingua abstractinglese
Altro abstract-
Lingua altro abstract-
Pagine da2307
Pagine a2317
Pagine totali11
RivistaNatural hazards and earth system sciences (Online)
Attiva dal 2001
Editore: Copernicus Publ. - Göttingen
Paese di pubblicazione: Germania
Lingua: inglese
ISSN: 1684-9981
Titolo chiave: Natural hazards and earth system sciences (Online)
Titolo proprio: Natural hazards and earth system sciences. (Online)
Titolo abbreviato: Nat. hazards earth syst. sci. (Online)
Titolo alternativo: NHESS (Online) (Online)
Numero volume della rivista20
Fascicolo della rivista-
DOI10.5194/nhess-20-2307-2020
Verificato da refereeSì: Internazionale
Stato della pubblicazionePublished version
Indicizzazione (in banche dati controllate)-
Parole chiaveRockfall, Rainfall thresholds, Canary Islands
Link (URL, URI)-
Titolo parallelohttps://nhess.copernicus.org/articles/20/2307/2020/
Licenza-
Scadenza embargo-
Data di accettazione16/07/2020
Note/Altre informazioni-
Strutture CNR
  • IRPI — Istituto di ricerca per la protezione idrogeologica
Moduli/Attività/Sottoprogetti CNR
  • DTA.AD003.306.001 : U-GEOHAZ
Progetti Europei-
Allegati
Rainfall and rockfalls in the Canary Islands: assessing a seasonal link (documento privato )
Tipo documento: application/pdf