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dc.contributor.authorNúñez Andrés, María Amparo
dc.contributor.authorBuill Pozuelo, Felipe
dc.contributor.authorHurlimann Ziegler, Marcel
dc.contributor.authorAbanco Martínez de Arenzana, Claudia
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.date.accessioned2019-01-15T21:01:01Z
dc.date.available2019-01-15T21:01:01Z
dc.date.issued2019-01
dc.identifier.citationNúñez-Andrés, M.A., Buill, F., Hurlimann, M., Abanco, C. Multi-temporal analysis of morphologic changes applying geomatic techniques: 70 years of torrential activity in the Rebaixader catchment (Central pyrenees). "Geomatics natural hazards and risk", Gener 2019, vol. 10, núm. 1, p. 314-335.
dc.identifier.issn1947-5705
dc.identifier.urihttp://hdl.handle.net/2117/126880
dc.description.abstractThe monitoring of morphologic changes in high-mountain environments is an important, but complex task. Terrestrial as well as airborne laser scanning (TLS and ALS) and digital photogrammetry (DP) using Unnamed Aerial Vehicle (UAV) can determine recent variations. In contrast, changes that occurred 20 or more years ago, need generally the application of DP and historic aerial photograph. We compared these four geomatic techniques and the resulting digital elevation models (DEM) that ranged over a 70-year time span (1946–2016). The accuracy of the different models and also the effect of different cell size were analysed. The accuracy analysis of the resulting DEMs shows important drawbacks, when historic aerial photographs are used. In these DEMs, the error in elevation can be important and a detailed analysis of morphologic changes is limited. Nowadays, the combination of DP and UAV is the technique with best cost-benefit ratio, although TLS could reveal similar precision. However, the application of TLS is restrained by the complex morphology and the presence of vegetation, which produce many shadows. Finally, the erosion rate was determined in our catchment. The resulting values range between 0.06 and 0.16¿m3/m2/y, which coincides rather well with data observed in other studies.
dc.format.extent22 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
dc.subject.lcshErosion--Spain
dc.subject.lcshPhotogrammetry--Digital techniques
dc.subject.otherDigital photogrammetry
dc.subject.otherTLS
dc.subject.otherALS
dc.subject.otherUAV
dc.subject.othererosion rate
dc.subject.otherPyrenees
dc.titleMulti-temporal analysis of morphologic changes applying geomatic techniques: 70 years of torrential activity in the Rebaixader catchment (Central pyrenees)
dc.typeArticle
dc.subject.lemacPirineus
dc.subject.lemacFotogrametria digital
dc.subject.lemacErosió
dc.contributor.groupUniversitat Politècnica de Catalunya. EGEO - Enginyeria Geomàtica
dc.contributor.groupUniversitat Politècnica de Catalunya. EnGeoModels - Monitoring and Modelling in Engineering Geology
dc.identifier.doi10.1080/19475705.2018.1523235
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://www.tandfonline.com/doi/full/10.1080/19475705.2018.1523235
dc.rights.accessOpen Access
drac.iddocument23610403
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/MINECO/1PN/BIA2015-67500-R
dc.relation.projectidinfo:eu-repo/grantAgreement/MINECO/1PN/BIA2016-75668-P
upcommons.citation.authorNúñez-Andrés, M.A., Buill, F., Hurlimann, M., Abanco, C.
upcommons.citation.publishedtrue
upcommons.citation.publicationNameGeomatics natural hazards and risk
upcommons.citation.volume10
upcommons.citation.number1
upcommons.citation.startingPage314
upcommons.citation.endingPage335


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Except where otherwise noted, content on this work is licensed under a Creative Commons license: Attribution-NonCommercial 3.0 Spain