Auto-épuration ; Canada ; Cours d'eau ; Cycle biogéochimique ; Cycle de l'azote ; Duffincreek ; Eau ; Ecosystème ; Etiage ; Eté ; Expérimentation ; Géographie de l'Amérique ; Nitrate ; Ontario ; Pollution ; Qualité de l'eau
A propos du bassin hydrographique du DuffinCreek, au N. E. de Toronto, des expériences en laboratoire suggèrent que presque toute la disparition du nitrate dans la rivière est causée par la dénitrification bactérienne et la réduction du nitrate
Erosion rates over millennial and decadal timescales at Caspar Creek and Redwood Creek, Northern California Coast Ranges
Detailed measurements of sediment fluxes in the Northern California Coast ranges at Caspar Creek and Redwood Creek have provided estimates of physical erosion rates since 1963 and 1971, respectively. They used cosmogenic Be 10 to measure millennial
-scale denudation rates averaged over 1400-8700 years at 6 catchments in Caspar Creek and 4 catchments in Redwood Creek. These measurements suggest that denudation rates at Caspar Creek are slower than rock uplift rates, implying that Caspar Creek
Creek morphology in the Sceldtpolders near Zelzate
Several creeks with different morphological and landscape characteristics occur in the Sceldtpolders area near the polderlimit between Zelzate and Aardenburg. In this paper diverse fossil creektypes, creeksediments and creekpatterns are discussed
. An orthogonal creek pattern can be reconstructed by detailed geomorphological mapping. The relation is examined between this exceptional creekpattern and the underlying fossil parcelpattern.
Late Quaternary alluvial history of Nowlands Creek, Hunter Valley, NSW
The purpose of this paper is to unravel the alluvial history of Nowlands Creek at the archaeological sites. In particular, the river terraces and their stratigraphy, soils and chronology will be evaluated to separate Pleistocene from Holocene
British Columbia ; Canada ; Coulée de blocs ; Géographie de l'Amérique ; Géomorphodynamique ; Holocène ; Mouvement de masse ; Quaternaire ; Stratigraphie ; Texas Creek ; Versant
Glaciotectonism and landsliding in Little Sandhill Creek, Alberta
This paper deals with a landslide on the north side of Little Sandhill Creek (Dinosaur Provincial Park). The slide was studied intensively because it contained several large stratigraphic exposures which provided clear indications of the effects
Analyse de 3 échantillons de 20 bassins-versants pour tester l'hypothèse que les termes de: creek, run et hollow s'appliquent à des cours d'eau ayant une taille et une vitesse d'écoulement différentes. Une analyse de variance et le test de Scheffé
Pre-impact conditions and cratering processes at the Flynn Creek Crater, Tennessee in Impact and explosion cratering. Planetary and terrestrial implications.
Astroblème ; Cratère d'impact ; Etats-Unis ; Flynn Creek Crater ; Géographie de l'Amérique ; Géomorphologie structurale ; Tennessee
The establishment and degeneration of a temporary creek system in response to managed coastal realignment : The Wash, UK
This paper examines the growth and decay of an ephemeral creek system produced in response to a managed realignment at Freiston Shore, The Wash. In addition, the natural and anthropogenically enhanced developments of the creek system are compared.
A rock glacier/debris-covered glacier system at Galena Creek, Absaroka Mountains, Wyoming
At Galena Creek, the ice/debris system has alternated between rock glacier and debris-covered glacier modes due to changes in the size of the accumulation area. These results have important implications for paleoclimatic studies of the ice
Waterhole form and process in the anastomosing channel system of Cooper Creek, Australia
One of the most distinctive features of Cooper Creek's anastomosing channel system is the preponderance of waterholes, enlarged segments of channel ranging in length from 100 m to over 20 km. They play a significant hydrological and geomorphological
role in the Cooper Creek anastomosing system. They provide long-term water storage in an arid environment, and their fixed position helps to maintain the stability of the multi-channel pattern.
The Sisters Creek Formation: Pleistocene sediments representing a nonglacial interval in southwestern British Columbia at about 18 ka
Définition de la Formation Sisters Creek avec l'établissement des stratotypes et la mise à jour du diagramme espace-temps pour les basses terres du Fraser, dans le sud-ouest de la Colombie-Britannique. La Formation Sisters Creek est une formation
Historical channel-bed elevation change as a result of multiple disturbances, Soldier Creek, Kansas
This paper presents the results of a U.S. Geological Survey study to determine and explain the spatial and temporal dimensions of channel change along Soldier Creek, a stream affected by multiple disturbances in northeast Kansas. In this study
, channel-bed elevation was used as the primary indicator variable to determine the location, type, magnitude, timing, duration, trend, and rate of change throughout the Soldier Creek system.
Magnetostratigraphic evidence from the Cold Creek bar for onset of ice-age cataclysmic floods in eastern Washington during the Early Pleistocene
Catastrophe ; Cold Creek ; Crue ; Etats-Unis ; Glace ; Paléomagnétisme ; Pléistocène ; Seuil ; Stratigraphie ; Washington State
Etude magnétostratigraphique détaillée des sédiments composant la barre d'inondation cataclysmique dans le Bassin Pasco, Washington. Interptétation paléoclimatique de la barre Cold Creek orientale.
Holocene alluvial chronology of One Tree Creek, southern Alberta, Canada
An alluvial chronology for the One Tree Creek basin, a southern tributary of the Red Deer River in the vicinity of the Dinosaur Provincial Park badlands, is reconstructed using terrace and paleochannel remnants and associated radiocarbon dated bones
. The chronology suggests that rapid incision by One Tree Creek took place during the late Holocene, probably in response to climatic changes rather than an adjustment to the postglacial downcutting of the main river.
Age of Tunica Hills (Louisiana-Mississipi) quaternary fossiliferous creek deposits| problems of radiocarbon dates and intermediate valley terraces in coastal plains