Preliminary assessment of rockslide and rockfall hazards using a DEM (Oppstadhornet, Norway)
The increasing availability and precision of digital elevation model (DEM) helps in the assessment of landslide prone areas where only few data are available. This approach is performed in 6 main steps which include: DEM creation; identification of geomorphologic features; determination of the main...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2005-01-01
|
| Series: | Natural Hazards and Earth System Sciences |
| Online Access: | http://www.nat-hazards-earth-syst-sci.net/5/285/2005/nhess-5-285-2005.pdf |
| _version_ | 1828293220620042240 |
|---|---|
| author | M.-H. Derron M. Jaboyedoff L. H. Blikra |
| author_facet | M.-H. Derron M. Jaboyedoff L. H. Blikra |
| author_sort | M.-H. Derron |
| collection | DOAJ |
| description | The increasing availability and precision of digital elevation model (DEM) helps in the assessment of landslide prone areas where only few data are available. This approach is performed in 6 main steps which include: DEM creation; identification of geomorphologic features; determination of the main sets of discontinuities; mapping of the most likely dangerous structures; preliminary rock-fall assessment; estimation of the large instabilities volumes. <P style='line-height: 20px;'> The method is applied to two the cases studies in the Oppstadhornet mountain (730m alt): (1) a 10 millions m<sup>3</sup> slow-moving rockslide and (2) a potential high-energy rock falling prone area. The orientations of the foliation and of the major discontinuities have been determined directly from the DEM. These results are in very good agreement with field measurements. Spatial arrangements of discontinuities and foliation with the topography revealed hazardous structures. Maps of potential occurrence of these hazardous structures show highly probable sliding areas at the foot of the main landslide and potential rock falls in the eastern part of the mountain. |
| first_indexed | 2024-04-13T11:21:12Z |
| format | Article |
| id | doaj.art-78e5db8b15054db3ae63305260e22fa4 |
| institution | Directory Open Access Journal |
| issn | 1561-8633 1684-9981 |
| language | English |
| last_indexed | 2024-04-13T11:21:12Z |
| publishDate | 2005-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Natural Hazards and Earth System Sciences |
| spelling | doaj.art-78e5db8b15054db3ae63305260e22fa42022-12-22T02:48:50ZengCopernicus PublicationsNatural Hazards and Earth System Sciences1561-86331684-99812005-01-0152285292Preliminary assessment of rockslide and rockfall hazards using a DEM (Oppstadhornet, Norway)M.-H. DerronM. JaboyedoffL. H. BlikraThe increasing availability and precision of digital elevation model (DEM) helps in the assessment of landslide prone areas where only few data are available. This approach is performed in 6 main steps which include: DEM creation; identification of geomorphologic features; determination of the main sets of discontinuities; mapping of the most likely dangerous structures; preliminary rock-fall assessment; estimation of the large instabilities volumes. <P style='line-height: 20px;'> The method is applied to two the cases studies in the Oppstadhornet mountain (730m alt): (1) a 10 millions m<sup>3</sup> slow-moving rockslide and (2) a potential high-energy rock falling prone area. The orientations of the foliation and of the major discontinuities have been determined directly from the DEM. These results are in very good agreement with field measurements. Spatial arrangements of discontinuities and foliation with the topography revealed hazardous structures. Maps of potential occurrence of these hazardous structures show highly probable sliding areas at the foot of the main landslide and potential rock falls in the eastern part of the mountain.http://www.nat-hazards-earth-syst-sci.net/5/285/2005/nhess-5-285-2005.pdf |
| spellingShingle | M.-H. Derron M. Jaboyedoff L. H. Blikra Preliminary assessment of rockslide and rockfall hazards using a DEM (Oppstadhornet, Norway) Natural Hazards and Earth System Sciences |
| title | Preliminary assessment of rockslide and rockfall hazards using a DEM (Oppstadhornet, Norway) |
| title_full | Preliminary assessment of rockslide and rockfall hazards using a DEM (Oppstadhornet, Norway) |
| title_fullStr | Preliminary assessment of rockslide and rockfall hazards using a DEM (Oppstadhornet, Norway) |
| title_full_unstemmed | Preliminary assessment of rockslide and rockfall hazards using a DEM (Oppstadhornet, Norway) |
| title_short | Preliminary assessment of rockslide and rockfall hazards using a DEM (Oppstadhornet, Norway) |
| title_sort | preliminary assessment of rockslide and rockfall hazards using a dem oppstadhornet norway |
| url | http://www.nat-hazards-earth-syst-sci.net/5/285/2005/nhess-5-285-2005.pdf |
| work_keys_str_mv | AT mhderron preliminaryassessmentofrockslideandrockfallhazardsusingademoppstadhornetnorway AT mjaboyedoff preliminaryassessmentofrockslideandrockfallhazardsusingademoppstadhornetnorway AT lhblikra preliminaryassessmentofrockslideandrockfallhazardsusingademoppstadhornetnorway |