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PORTAIL D'INFORMATION GÉOGRAPHIQUE

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  • Carte postale ; Etats-Unis ; Kansas ; Midwest ; Nebraska ; Perception ; Représentation de l'espace ; Ville
  • Kansas ; Midwest ; Nebraska ; Perception ; Postcard ; Spatial representation ; Town ; United States of America
  • The symbolic connection of Main Streets derives from the Midwest in the first half of the 20th century, a time that coincides with the golden age of the picture postcard. A sample of 140 postcards from small towns in Kansas and Nebraska was selected
  • 2009
  • Aménagement hydraulique ; Bassin-versant ; Cours d'eau ; Erosion fluviatile ; Etats-Unis ; Fluviatile ; Incision ; Iowa ; Loess ; Missouri ; Modèle ; Nebraska ; Niveau de base ; Variation spatiale
  • Base level ; Downcutting ; Fluvial erosion ; Fluvial processes ; Hydraulic works ; Iowa ; Loess ; Missouri ; Model ; Nebraska ; Spatial variation ; Stream ; United States of America ; Watershed
  • Stream channel incision is severe in the loess-dominated region of western Iowa and eastern Nebraska, with recent incision related to sediment capture by reservoirs on the Missouri River. This study confirms that the temporal pattern of incision
  • on tributaries is demonstrated to follow a simple rule of base-level lowering at the outlet multiplied by a flow-length ratio. This rule is used to estimate depth of channel incision along all tributary streams of the Nebraska reach of the Missouri River
  • 2009
  • 2009
  • [b1] Dep. of Geosciences, Univ. of Nebraska, Lincoln, Etats-Unis