Tha anastomosing rivers represent a major group of rivers that are currently of interest in fluvial geomorphology and sedimentology. The term is reserved for a type of multichannel river on alluvial plains that most often seems to form under
relatively low-energetic conditions. The objects of this study are (1) to develop a consistent definition, (2) to develop a universally applicable conceptual model for the genesis of anastomosing river systems and (3) to document the variability in facies
and fluvial architecture of modern and subrecent anastomosing river systems to improve the interpretation of the fossil record. The approach followed is that of comparatice reserch of modern and subrecent anastomosing river systems in various climatic
Examines the development of several anastomosing channels tributary to the Ohio River in south-central Indiana. This paper shows that : 1) anabranch development is associated with avulsion; 2) the spatial distribution of anastomosed stream segments
Waterhole form and process in the anastomosing channel system of Cooper Creek, Australia
Australie ; Chenal anastomosé ; Cours d'eau ; Domaine aride ; Géométrie hydraulique ; Plaine d'inondation ; Profil transversal ; Réseau de drainage ; South 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.
Cooper Creek has developed a very extensive system of anastomosing channels, a distinctive feature of which is the preponderance of waterholes, which are readily identified as deepened and widened reaches of channel with more or less permanent water
an anastomosing planform. Radiocarbon dating indicated that the earliest of the retraced channels were active before 9000 BP. The retraced river system was formed in a proglacial stream valley perpendicularly cut by remains of subglacial tunnels, now partly filled
anabranches, anastomosing patterns with traces of a lateral migration and traces of a transition from meandering to anastomosing planform were distinguished.
Anastomosing river system along the subsiding middle Yangtze River basin, southern China
Aménagement hydraulique ; Barrage ; Capacité de charge ; Charge en suspension ; Chenal anastomosé ; Chine ; Chine du Sud ; Cours d'eau ; Géométrie hydraulique ; Tectonique
that they are similar to other anastomosing river depositional systems. Secondly, the results will serve as a baseline indicator for monitoring and evaluating the fluvial environmental change that will occur due to the impoundment and flow regulation of the 3-Gorges Dam
The anastomosing pattern and the extensively distributed scroll bars in the middle Amazon River
Amazonas rio ; Années 1978-2009 ; Bourrelet arqué ; Brésil ; Chenal anastomosé ; Cours d'eau ; Espace-temps ; Géométrie hydraulique ; Morphostratigraphie ; Méandre ; Végétation
The middle Amazon River, between the confluences of the Negro and Madeira Rivers in Brazil, shows an anastomosing morphology with relatively stable, multiple interconnected channels that locally enclose floodbasins. The AA. analyzed sedimentary
processes using field data, morphology and channel changes trough a temporal analysis using remote sensing data and obtained optically stimulated luminescence (OSL) dating to understand the genesis of this large anastomosing river and the development of its
Afrique du Sud ; Chenal alluvial ; Chenal anastomosé ; Cours d'eau ; Ecoulement ; Ecoulement fluvial ; Géométrie hydraulique ; Lit fluvial ; Mpumalanga ; Rugosité ; Végétation ripicole
This paper presents the results of a detailed investigation of total flow resistance variation for 5 channel types on the Sabie River, South Africa (cohesive, mixed anastomosed, uncohesive mixed anastomosed, mixed pool-rapid, alluvial braided
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
This paper uses qualitative and quantitative data analyses to examine multi-scale spatial patterns of sedimentation in a large anastomosing river floodplain in SW Queensland. Patterns of sedimentation at the channel, floodplain process zone
Alluvial reaches in the source region of the Yangtze River exhibit predominantly braided channel planforms, while equivalent reaches in the source region of the Yellow River have more diverse planform morphologies including anastomosing/braided
, anabranching/braided, and anabranching/anastomosing reaches. The regional gradient of variation in riparian vegetation and interactions between vegetation development and hydrologic process are shown to be major factors influencing this difference in channel
, including quantification of differences in channel characteristics associated with a quasi-periodic switching between 2 different channel plan forms (single-thread and anastomosing).
. Utilisation de diagrammes qui représentent en relation avec la latitude, la fréquence des types de lits de rivière pour des cours d'eau à méandres, à anastomoses stables et changeantes.
Antarctique ; Bathymétrie ; Drainage ; Drumlin ; Eau de fonte ; Erosion glaciaire ; Glaciaire ; Géomorphologie ; Héritage géomorphologique ; Marguerite Bay ; Sismique marine ; Zone froide
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
L'étude des conditions déterminant le caractère des processus survenant dans le lit fluvial – les types de lits, la pente du versant, les types de sédiments, la capacité de chenal, la formation des méandres, les anastomoses, etc. est utile pour la
The middle reaches of the Tsangpo River consist of alternating sections of wide valleys and gorges. The wide valley sections have braided and anastomosing channels, gentle hydraulic gradients, thick alluvial deposits and low terraces. In contrast
Global Positioning System (GPS) water-surface elevation data from the panhandle region of the Okavango Fan show that a prominent anastomosed reach occurs within a relative valley-gradient depression inferred to represent a small graben structure
. The river may be considered anastomosed, albeit with few islands and anabranches. The main Holocene units are the impeded floodplain and the channel-dominated floodplain. This very large river system had a complex and delayed response to variations