Rockfall hazard and risk assessment in the Yosemite Valley, California, USA (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Rockfall hazard and risk assessment in the Yosemite Valley, California, USA (Articolo in rivista) (literal)

Anno

• 2003-01-01T00:00:00+01:00 (literal)

Alternative label

• Guzzetti F.1, Reichenbach P.2, Wieczorek G.F. 3 (2003)
  Rockfall hazard and risk assessment in the Yosemite Valley, California, USA
  
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Guzzetti F.1, Reichenbach P.2, Wieczorek G.F. 3 (literal)

Pagina inizio

• 491 (literal)

Pagina fine

• 503 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 3 (6) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto

• Rock slides and rock falls are the most frequent types of slope movements in Yosemite National Park, California. In historical time (1857-2002) 392 rock falls and rock slides have been documented in the valley, and some of them have been mapped in detail. We present the results of an attempt to assess rock fall hazards in the Yosemite Valley. Spatial and temporal aspects of rock falls hazard are considered. A detailed inventory of slope movements covering the 145-yr period from 1857 to 2002 is used to determine the frequency-volume statistics of rock falls and to estimate the annual frequency of rock falls, providing the temporal component of rock fall hazard. The extent of the areas potentially subject to rock fall hazards in the Yosemite Valley were obtained using STONE, a physically-based rock fall simulation computer program. The software computes 3-dimensional rock fall trajectories starting from a digital elevation model (DEM), the location of rock fall release points and maps of the dynamic rolling friction coefficient and of the coefficients of normal and tangential energy restitution. For each DEM cell the software calculates the number of rock falls passing through the cell, the maximum rock fall velocity and the maximum flying height. For the Yosemite Valley, a DEM with a ground resolution of 10×10 m was prepared using topographic contour lines from the U.S. Geological Survey 1:24,000-scale maps. (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• 1-2 CNR-IRPI, 3 US Geological Survey (literal)

Titolo

• Rockfall hazard and risk assessment in the Yosemite Valley, California, USA (literal)

Prodotto di

• Research institute for geo-hydrological protection (IRPI) (Istituto)

Autore CNR

• PAOLA REICHENBACH (Unità di personale interno)
• FAUSTO GUZZETTI (Persona)

Incoming links:

Autore CNR di

• PAOLA REICHENBACH (Unità di personale interno)
• FAUSTO GUZZETTI (Persona)

Prodotto

• Research institute for geo-hydrological protection (IRPI) (Istituto)