Search results
Results from the WOW.Com Content Network
Rhine–Meuse–Scheldt delta, with the flow from right to left, showing several streams branching off from their main streams. A distributary, or a distributary channel is a stream channel that branches off and flows away from a main stream channel.
Repeated channel-switching events build up a mature delta with a distributary network. Another way these distributary networks form is from the deposition of mouth bars (mid-channel sand and/or gravel bars at the mouth of a river). When this mid-channel bar is deposited at the mouth of a river, the flow is routed around it.
Delta bifurcation has a typical angle at which it is observed, with a critical angle of approximately 72º. [7] However, observations and experiments show that many distributary channel bifurcations do not actually exhibit a bifurcation angle of 72º, but rather grow towards this angle over time after initiation of bifurcation. [8]
When a river-dominated delta is considered, formation and evolution of terminal distributary channels of the delta, which are the most active parts of the distributive channel network, are closely related to mouth bar formation. [13]
A single deltaic lobe includes a network of shallow channels called distributaries that make up a distributary network that branches off from the mainstream of the river. These networks can be the blueprint for a future progradational deltaic lobe when the initial deltaic lobe is abandoned. [ 2 ]
The Atchafalaya River is the largest distributary of the Mississippi River and is also considered to be an influential part of the continual land-building processes within the Mississippi River Delta. [9] The river's tributary channel was formed approximately 500 years ago and the Atchafalaya and Wax Lake deltas emerged around the middle of the ...
The Old River is a tidal distributary of the San Joaquin River that flows for about 40 miles (64 km) through the Sacramento–San Joaquin River Delta in Northern California. The Old River was once the main channel of the San Joaquin until navigation ( Stockton Deepwater Shipping Channel ) and flood control projects in the late 19th and 20th ...
The Fly Delta exhibits a distinctive funnel shape in plan view, attesting to the fundamental role of tidal currents in shaping the Delta's geomorphology. Mean spring tidal ranges are amplified within the delta, from around 3.5 m at the seaward entrance of the distributary channels, reaching a peak of about 5 m at the delta apex. [17]