inscription
Portail d'information géographique

Résultats de la recherche (33 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • Avulsion ; Bifurcation ; British Columbia ; Canada ; Chenal anastomosé ; Columbia ; Confluence ; Cours d'eau ; Géométrie hydraulique ; Modelé fluviatile ; Modèle ; Transport sédimentaire
  • evolve towards single-channel systems within centuries because symmetric channel bifurcations are inherently unstable. The AA. conclude that this anastomosing pattern is the result of time-varying sediment overloading and is not an equilibrium pattern
  • Afrique du Sud ; Amérique du Nord ; Asie ; Bifurcation ; Chenal anastomosé ; Columbia ; Cours d'eau ; Etude comparée ; Ganga ; Géométrie hydraulique ; Inde ; Méandre ; Mékong ; Orange ; Réseau de drainage
  • -constrained networks (Mekong and Orange rivers) are compared with the classic alluvial anastomosed Upper Columbia River and the wandering Ganga River. Widely recognized indices utilized include : channel link count and channel sinuosity, and less common
  • Fluvial processes in a forested anastomosing river: flood partitioning and changing flow patterns
  • This paper presents data on the flood response of channels in one of the last wooded, semi-natural anastomosing systems in Europe. The Gearagh, Ireland, is characterized by hundreds of small islands separated by interconnected channels of low slope
  • Anastomosing rivers are characterized by multiple channels separated by islands excised from the floodplain. Their status relative to the continuum concept of channel pattern is assessed with channel pattern defined in terms of three variables: flow
  • strentgh, bank erodibility and relative sediment supply. Anastomosis may in certain cases represent a transitional form of channel pattern but there is no denying the longevity of some anastomosing systems.
  • Morphology of Red Creek, Wyoming, an arid-region anastomosing channel system
  • Anastomose ; Géographie de l'Afrique ; Hydrogéologie ; Karst ; Karst noyé ; Kwilu ; Zaïre
  • The present study aims at a more comprehensive understanding of channel pattern development and avulsion processes in relation to the large-scale trend of Holocene sea-level rise. It investigates the occurrence of anastomosing and meandering channel
  • This thesis is part of a research programma that was started at the Department of Physical Geography of Utrecht University to gain more insight in the lithological complexity of fluvial deposits of meandering and anastomosing rivers
  • sedimentology of anastomosed and wandering gravel-bed rivers. The scale problems of facies analysis may be overcome by employing architectural element analysis in conjunction with modern geophysical methods such as shallow reflection seismology and ground
  • compartimentés; tandis que les grottes phréatiques sont caractérisées par des formes en nids d'abeilles, poches, labyrinthes et anastomoses suivant les plans de stratification. Les cavités verticales se sont développées suivant les joints, et dans les calcaires
  • the Last Glacial Maximum. Ice drainage within the bay and on the inner continental shelf was strongly influenced by tectonic fabric. The glacially sculptured geomorphic features within Marguerite Bay co-exist with anastomosing, radial and relatively
  • straddle the Mackenzie and Churchill drainage divide. Holocene differential isostatic uplift caused the flow reversal in the upper Churchill basin. Anastomosed channels at the mouth of rivers flowing north into lakes indicate that uplift is still active
  • Channel adjustments of the Danube River near Bratislava are reconstructed from historical river maps for 1712-1886, the period preceding mid-course channelization. The study reach comprised an anastomosing-meandering planform, characteristic