GEOSCAN, résultats de la recherche


TitreThe Arctic Coastal Dynamics Database: A New Classification Scheme and Statistics on Arctic Permafrost Coastlines
AuteurLantuit, H; Overduin, P P; Couture, N; Wetterich, S; Aré, F; Atkinson, D; Brown, J; Cherkashov, G; Drozdov, D; Forbes, L D; Graves-Gaylord, A; Grigoriev, M; Hubberten, H -W; Jordan, J; Jorgenson, T; Ødegård, R S; Ogorodov, S; Pollard, W H; Rachold, V; Sedenko, S; Solomon, S; Steenhuisen, F; Streletskaya, I; Vasiliev, A
SourceEstuaries and Coasts vol. 35, no. 2, 2012 p. 383-400, (Accès ouvert)
Séries alt.Ressources naturelles Canada, Contribution externe 20182787
ÉditeurSpringer Nature
Documentpublication en série
Mediapapier; en ligne; numérique
ProgrammeGéosciences de changements climatiques
Diffusé2011 02 01
Résumé(disponible en anglais seulement)
Arctic permafrost coasts are sensitive to changing climate. The lengthening open water season and the increasing open water area are likely to induce greater erosion and threaten community and industry infrastructure as well as dramatically change nutrient pathways in the near-shore zone. The shallow, mediterranean Arctic Ocean is likely to be strongly affected by changes in currently poorly observed arctic coastal dynamics. We present a geomorphological classification scheme for the arctic coast, with 101,447 km of coastline in 1,315 segments. The average rate of erosion for the arctic coast is 0.5 m year -1 with high local and regional variability. Highest rates are observed in the Laptev, East Siberian, and Beaufort Seas. Strong spatial variability in associated database bluff height, ground carbon and ice content, and coastline movement highlights the need to estimate the relative importance of shifting coastal fluxes to the Arctic Ocean at multiple spatial scales. © 2011 Coastal and Estuarine Research Federation.