inscription
PORTAIL D'INFORMATION GÉOGRAPHIQUE

Résultats de la recherche (142 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • Evolution of the erosion processes in the Valea Spanilor hydrographic basin from the Transylvanian Plateau
  • The data were obtained on runoff ploto (100 m2) and from the outlet of the V. Spanilor hydrographic basin (206 ha) lying in the northwest of the Transylvanian Plateau. The value of annual erosion varies between 0.39 t. ha-1 and 11.0 t. ha-1
  • Variations des réseaux hydrographiques et esquisse de l'évolution morphotectonique de l'Adrar Yagour (Haut Atlas marocain) in Effets des séismes sur les reliefs de forte énergie. Actes du colloque.
  • Variations of the hydrographic system and morphotectonic evolution of Adrar Yagour. The Yagour plateau is located at SE of Marrakech on the northern border of High Atlas. The study of the paleo-hydrographic system and of the morphotectonic evolution
  • Evolutions dans le réseau hydrrographique du bassin-versant de Płutnica au cours des deux siècles passés
  • The paper describes performance of the Płutnica catchment hydrographic network in the last 200 years, including the present hydrographic situation. It also tries to assess the role of man in formation of water relations in this area, i.e. the role
  • of farming in the catchment and its influence on water relations. Investigations were based on interpretation of historical maps as well as making a new hydrographic picture. - (BJ)
  • Physical-scale modelling of jökulhlaups (glacial outburst floods) with contrasting hydrograph shapes
  • hydrograph shapes produced different sedimentary and geomorphic impacts. For this purpose, an exponentially rising and a linearly rising jökulhlaup were modelled.
  • Efficiency of the geomorphic instantaneous unit hydrograph method in flood hydrograph simulation
  • of a geomorphologic model with Snyder, SCS, Trianglar, Rosso and Geomorphoclimatic Unit hydrographs, and in addition to determine the shape and dimensions of outlet runoff hydrographs. The peak time and peak flow of outlet runoff in the models were then compared
  • , and the model that most efficiently estimated hydrograph of outlet flow for similar regions was determined. The study's results confirm the high efficiency of the Geomorphoclimatic Unit Hydrograph and its ability to increase simulation accuracy for runoff
  • and hydrographs.
  • Some results of the study of surface erosion simulation of rill erosion, and gully evolution rate. In keeping with the local conditions, at the Perieni station three types of small hydrographic basins, requiring differential application
  • Upper layer hydrographic conditions at the Yucatan Strait during May, 1972
  • Valtozasok Gyor kornyékének vizrajzaban. (Hydrographical changes in the vicinity of Gyor)
  • Gamma synthetic hydrographs
  • Hydrographic investigations in the Iceland and Greenland Seas in late winter 1971-Deep Water Project
  • Step-pool evolution in the Rio Cordon, northeastern Italy
  • The main aim of this study was to monitor the temporal evolution of step-pool morphology and, at the same time, the influence of steepness on the total bedload volume yielded by comparable flood hydrographs. The analogy of step spacing with antidune
  • A modelling approach is presented to predict local scour under time varying flow conditions. The model is based on a number of hypotheses concerning the characteristics of the flow hydrograph, the temporal evolution of the scour and the geometry
  • of the scour hole. A key assumption is that, at any time, the scour depth evolves at the same rate as in an equivalent steady flow. Experimental data are presented that show the scour hole development downstream of bed sills due to flood hydrographs follow
  • in the rising limb of the flow hydrograph. This suggests that the underlying assumptions used in the modelling approach are appropriate.
  • Dynamique fluviale ; Evolution de vallée ; Fluviatile ; Lit fluvial ; Méandre ; Tchèque, république ; Terrasse fluviatile ; Vallée
  • Czech Republic ; Fluvial dynamics ; Fluvial processes ; Fluvial terrace ; Meander ; River bed ; Valley ; Valley floor evolution
  • . The main hydrographic change in the region-diversion of the Ohře Rivber channel from Postoloprty to Bílina Rivcer to the current eastern direction - has induced new orientation of certain brooks and intense development of Ohře meanders in the Most basin
  • Report on hydrographic investigations of non glaciated part of northwestern Sørkapp Land (Spitsbergen)
  • On the base of the spatial distribution of the hydrographic phenomena the alimentation, transit and accumulation areas were distinguished. The alimentation area is divided into the mountain, wet subslope and wet terraces zones.―(D'après l'A.).
  • Evaluation de la transformation des hydrographes des grandes crues de l'écoulement et des niveaux d'eau de la Volga inférieure et de son delta
  • Crue ; Delta ; Débit ; Hydrographe ; Niveau de base ; Russie d'Europe ; Volga
  • Mise au point d'un système de paramètres quantitatifs des hydrographes de crues des débits et des niveaux de l'eau sur la Volga inférieure et son delta.
  • Eemian climatic and hydrographical instability on a marine shelf in northern Denmark
  • This paper presents benthic forminifera and stable data from the last interglaciation (Eemian, substage 5e) from a borehole at Skagen, Denmark. These data provide evidence for major environmental and hydrographic changes during this period.
  • Prévision de l'hydrographe des crues pluviales sur les cours d'eau d'Extrême-Orient
  • Amur ; Bassin fluvial ; Cours d'eau ; Crue ; Dal'nij Vostok ; Habarovsk ; Hydrographe ; Indicateur ; Méthodologie ; Pluie ; Primor'e ; Précipitation ; Prévision ; Russie d'Asie
  • Méthode de prévision d'un hydrographe de cours d'eau avec une alimentation pluviale d'après des données de précipitations avec une avance jusqu'à 4 à 6 jours. Le schéma de prévision est basé sur l'utilisation de bassins-indicateurs.
  • Isotope hydrograph separations and rapid delivery of pre-event water from drainage basins
  • . The hydrological processes that have been invoked to explain the observed isotopic response of streamflow to rainfall and snowmelt inputs in various environments are reviewed. This paper summarizes the environmental isotope hydrograph separation technique
  • and provides a broad review of the results of isotope hydrograph separations conducted around the world.
  • Experimental investigation of Horton overland flow on tropical hillslopes. 2. Hydraulic characteristics and hillslopes hydrographs
  • Caractéristique hydraulique ; Ecoulement ; Ecoulement superficiel ; Expérimentation ; Géographie physique ; Hydrographe de versant ; Kenya ; Mesure de terrain ; Simulateur de pluie ; Versant ; Versant de colline ; Zone intertropicale
  • Les caractéristiques de l'écoulement sous pluie artificielle ont été mesurées sur des parcelles de 5m de long sur divers types de versants au Kenya. A partir de ces résultats des hydrographes de pente sont calculés en utilisant la méthode
  • The AA. reconsider features described as neotectonic in origin, especially the correspondence between these features, the distribution and characteristics of seismic activity, and the local morphology (fault scarps, hydrographic markers). The AA
  • by distinguishing them, if possible, from those of long-term morphotectonic evolution, i.e., since the Cretaceous.