This study demonstrates that the utility of simultaneous-equation analysis is limited for fluvial systems by inherent multicollinearity among hydrologic and morphologic variables.
Hydrological analysis of flow variation of the Gila River in Safford Valley, southeast Arizona
Arizona ; Climatic variation ; Discharge ; Flood ; Fluvialhydrology ; Precipitation ; Stream ; Stream flow ; United States of America ; Water management
This paper assesses how the form of the spring-dominated channels differs as a consequence of distinctive hydrology. In addition, the AA. examine in more detail the hydrology of such springfed systems. They compare spring-dominated alluvial streams
of the bed and bank material; and the frequency and duration of flows. The geomorphic and hydrologic attributes of the spring-dominated channels were compared with those of runoff-dominated channels. Finally, they examine whether the distinctive hydrology
of spring-dominated streams was reflected in the fluvial geomorphology of these streams.
Années 2004-2005 ; Bibliographie ; Cours d'eau ; Erosion des berges ; Géométrie hydraulique ; Hydrologie fluviale ; Modélisation ; Méthodologie ; Transport sédimentaire ; Végétation ripicole
Le point sur les recherches en géomorphologie fluviale parues en 2004 et 2005 : hydraulique fluviale, dynamique des sédiments fluviaux, modélisation, impact de la végétation sur les systèmes fluviaux, impact de l'érosion des berges sur les systèmes
fluviaux, méthodologie en géomorphologie fluviale.
Action anthropique ; Cours d'eau ; Débit ; Ecoulement ; Ecoulement fluvial ; Hydrologie fluviale ; Manuel
Manuel à l'usage des étudiants géographes et hydrologues. Beaucoup de données sur la variabilité et l'irrégularité des débits. Un dernier chapitre prend en compte l'influence de l'homme sur les écoulements fluviaux et cherche à l'estimer. - (FC)
Règles générales des processus fluviaux; discrétion et continuité des manifestations spatiales et temporelles des processus fluviaux; typologie des processus fluviaux et leur nature multifactorielle; transport des sédiments et déformation des lits
fluviaux. Etude cartographique des processus fluviaux.
Dam ; Flood ; Hydraulic works ; Hydrological regime ; Riparian vegetation ; Stream ; Stream flow ; United States of America
This paper presents the analysis of pre- and post-dam hydrologic changes from dams that cover the spectrum of hydrologic and climatic regimes across the United States. The overall goals are to document the type, magnitude, and direction
of hydrologic shifts because of impoundment. To assess hydrologic changes associated with dams, the AA. applied a hydrologic model, the Indicators of Hydrologic Alteration (IHA), supplemented with orientation statistics for certain hydrograph parameters
. The results indicate that the major pulse of dam construction during the previous century has modified hydrologic regimes on a nationwide scale, for large and small rivers.