GEOSCAN, résultats de la recherche

Menu GEOSCAN


TitreDry climate disconnected the Laurentian Great Lakes
AuteurLewis, C F M; King, J W; Blasco, S M; Brooks, G R; Coakley, J P; Croley, T E, II; Dettman, D L; Edwards, T W D; Heil, C W, Jr.; Hubeny, J B; Laird, K R; McAndrews, J H; McCarthy, F M G; Medioli, B E; Moore, T C, Jr.; Rea, D K; Smith, A J
SourceEos, Transactions of the American Geophysical Union vol. 89, no. 52, 2008 p. 541-552, https://doi.org/10.1029/2008eo520001 (Accès ouvert)
Année2008
Séries alt.Secteur des sciences de la Terre, Contribution externe 20080381
ÉditeurWiley-Blackwell
Documentpublication en série
Lang.anglais
DOIhttps://doi.org/10.1029/2008eo520001
Mediapapier; en ligne; numérique
Formatspdf
ProvinceOntario
SNRC31C; 31D; 31E; 31F; 31L; 40; 41; 42B; 42C; 42D; 42E; 42F; 42G; 52A; 52B; 52H
Lat/Long OENS-96.0000 -72.0000 51.0000 38.0000
Sujetsmilieu hydrologique; budget hydrologique; propriétés hydrologiques; profondeurs des eaux lacustres; eaux de surface; niveaux d'eau; eaux lacustres; bassins sédimentaires; bassins; analyse du bassin; effets climatiques; climat; milieux lacustres; Holocène; hydrogéologie; Nature et environnement; Cénozoïque; Quaternaire
Illustrationslocation maps; graphs
ProgrammeRenforcer la résilience face aux changements climatiques
Diffusé2011 06 03
Résumé(disponible en anglais seulement)
Recent studies have produced a new understanding of the hydrological history of North America's Great Lakes, showing that water levels fell several meters below lake basin outlets during an early postglacial dry climate in the Holocene (younger than 10,000 radiocarbon years, or about 11,500 calibrated or calendar years before present (B.P.)). Water levels in the Huron basin, for example, fell more than 20 meters below the basin overflow outlet between about 7900 and 7500 radiocarbon (about 8770 - 8290 calibrated) years B.P. Outlet rivers, including the Niagara River, presently falling 99 meters from Lake Erie to Lake Ontario (and hence Niagara Falls), ran dry. This newly recognized phase of low lake levels in a dry climate provides a case study for evaluating the sensitivity of the Great Lakes to current and future climate change.
GEOSCAN ID225808