Dépôt numérique

An Extreme Sediment Transfer Event in a Canadian High Arctic Stream.


Téléchargements par mois depuis la dernière année

Plus de statistiques...

Lewis, Ted, Braun, Carsten, Hardy, Douglas R., Francus, Pierre et Bradley, Raymond S. (2005). An Extreme Sediment Transfer Event in a Canadian High Arctic Stream. Arctic, Antarctic, and Alpine Research , vol. 37 , nº 4. p. 477-482. DOI: 10.1657/1523-0430(2005)037[0477:AESTEI]2.0.CO;2.

[thumbnail of P1352.pdf]
Télécharger (438kB) | Prévisualisation


Two large suspended sediment concentration (SSC) pulses were recorded in 1998 in a small snowmelt-fed stream on Ellesmere Island in the Canadian High Arctic. The largest pulse occurred from 7 to 8 July, when 32% of the monitored seasonal sediment transport occurred in only four hours. SSC reached 83,760 mg L⁻¹, exceeding all previously recorded values from high arctic glacially-fed and snowmelt-fed rivers by more than one order of magnitude. The event occurred after the majority of snow in the watershed had melted, and was preceded by a long period of relatively high air temperature, and a small rainfall event on 7 July. We consider the most likely cause of the event to be a rapid mass movement.

Type de document: Article
Mots-clés libres: sédiments; cours d'eau; Canada; Arctique
Centre: Centre Eau Terre Environnement
Date de dépôt: 18 nov. 2020 19:51
Dernière modification: 18 nov. 2020 19:51
URI: https://espace.inrs.ca/id/eprint/9576

Actions (Identification requise)

Modifier la notice Modifier la notice