A combined approach to cliff characterization: Cliff Stability index

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dc.contributor.authorBergillos, Rafael J.
dc.contributor.authorRodriguez-Delgado, Cristobal
dc.contributor.authorMedina, Luis
dc.contributor.authorFernandez-Ruiz, Jesus
dc.contributor.authorRodriguez-Ortiz, Jose M.
dc.contributor.authorIglesias, Gregorio
dc.contributor.funderXunta de Galiciaen
dc.contributor.funderEuropean Commissionen
dc.contributor.funderPlymouth Universityen
dc.date.accessioned2022-02-23T15:29:28Z
dc.date.available2022-02-23T15:29:28Z
dc.date.issued2021-12-24
dc.date.updated2022-02-23T15:15:22Z
dc.description.abstractIn this work, a combined multidisciplinary method to characterize coastal cliff environments is presented. It combined two complementary approaches – engineering and geomorphological. The first one is represented by the wave power values along the cliff face. For that purpose, the deep-water wave climate is statistically characterized, and high-energy sea states are numerically propagated to the cliff with a state-of-the-art model. The variations in wave power at the cliff face are controlled by the varying cliff orientation and by the irregular morphology, which influences wave propagation through refraction and shoaling processes. Based on wave power, four engineering exposure levels, from low to extreme, are defined and mapped onto the cliff. The geomorphological approach is based on an index developed ad hoc for this work, the Cliff Stability (CS) index, which takes into account the cliff geometry, lithology, structure and degradation state, as well as the hydrological conditions. Based on the CS index, four geomorphological exposure levels are defined and mapped, from low to extreme. The combined approach is shown through the application to a study site in NW Spain. The two perspectives, engineering and geomorphological, are found to yield similar results in some sections of the study area, but not all. It may be inferred that, despite the importance of wave action in shaping the cliff, the additional elements included in the CS index also play a significant role. In practical terms, the significance of these results is that the two approaches, engineering and geomorphological, should be combined to properly characterize coastal cliffs. This combined approach represents a multidisciplinary tool to define and characterize the exposure levels and, thus, prevent damages in cliff environments across the world.en
dc.description.sponsorshipXunta de Galicia (Project framework “Study to establish the current geomorphological and geotechnical situation of the natural monument Catedrales beach and its possible evolution in time”); European Commission ((MCIN/AEI/10.13039/501100011033 through Juan de la Cierva program (research contract IJC2019-038848-I))en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid106706en
dc.identifier.citationBergillos, R. J., Rodriguez-Delgado, C., Medina, L., Fernandez-Ruiz, J., Rodriguez-Ortiz, J. M. and Iglesias, G. (2022) ‘A combined approach to cliff characterization: Cliff Stability index', Marine Geology, 444, 106706 (9 pp). doi: 10.1016/j.margeo.2021.106706.en
dc.identifier.doi10.1016/j.margeo.2021.106706en
dc.identifier.endpage8en
dc.identifier.issn0025-3227
dc.identifier.journaltitleMarine Geologyen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/12597
dc.identifier.volume444en
dc.language.isoenen
dc.publisherElsevieren
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S0025322721002887
dc.rights© 2021 Elsevier B. V. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectCliff stabilityen
dc.subjectCoastal geologyen
dc.subjectCoastal geomorphologyen
dc.subjectExposureen
dc.subjectWave poweren
dc.titleA combined approach to cliff characterization: Cliff Stability indexen
dc.typeArticle (peer-reviewed)en
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