GEOSCAN, résultats de la recherche


TitreTree rings as paleoflood and paleostage indicators
AuteurSt. George, S
SourceTree-ring reconstructions in natural hazards research: a state-of-the-art; par Stoffel, M (éd.); Bollschweiler, M (éd.); Butler, D R (éd.); Luckman, B H (éd.); Advances in Global Change Research vol. 41, 2010 p. 233-239, 22
Séries alt.Secteur des sciences de la Terre, Contribution externe 20090270
Documentpublication en série
DOI 22
Mediapapier; en ligne; numérique
Sujetsinondations; potentiel d'inondation; dendrochronologie; paléoécologie; paléoenvironnement; écologie; plaines d'inondation; dangers pour la santé; géologie de l'environnement; paléontologie; Santé et sécurité
ProgrammeGestionnaire de programme - Réduction des risques, Géoscience pour la sécurité publique
Diffusé2010 03 12
Résumé(disponible en anglais seulement)
Dendrochronological methods can routinely date past floods to the year of their occurrence and, in rare cases, can estimate the timing of floods that occur during the growing season to within two weeks. This high degree of chronological control, which is surpassed only by that provided by direct observation, can be used to determine whether floods in separate watersheds were synchronous or offset by several years and test hypothesis that suppose linkages between extreme floods and specific forcing mechanisms. The wide geographic distribution of tree species with dateable rings combined with the broad suite of methods available to examine interconnections between floods and tree growth allows dendrochronologists to apply their style of paleoflood hydrology in many settings that are not appropriate for techniques that depend on geological evidence.