Hydrodynamics of sinuous channel with seepage

2020 ◽  
pp. 114-120
Author(s):  
J. Taye ◽  
B. Kumar ◽  
G. Caroppi ◽  
P. Gualtieri
Keyword(s):  
Sinuous Channel

Turbulence Processes Within Turbidity Currents

2021 ◽  
Vol 53 (1) ◽  
pp. 59-83
Author(s):  
Mathew G. Wells ◽  
Robert M. Dorrell
Keyword(s):  
Turbulent Mixing ◽  
Large Scale ◽  
Slope Failure ◽  
Velocity Structure ◽  
Particulate Material ◽  
Control Flow ◽  
Flow Dynamics ◽  
Turbidity Currents ◽  
Sinuous Channel ◽  
Sedimentation Processes

Sediment-laden gravity currents, or turbidity currents, are density-driven flows that transport vast quantities of particulate material across the floor of lakes and oceans. Turbidity currents are generated by slope failure or initiated when a sediment-laden flow enters into a lake or ocean; here, lofting or convective sedimentation processes may control flow dynamics. Depending upon the internal turbulent mixing, which keeps particles in suspension, turbidity currents can travel for thousands of kilometers across the seafloor. However, despite several competing theories, the process for the ultralong runout of these flows remains enigmatic. Turbidity currents often generate large sinuous channel–levee systems, and the dynamics of how turbidity currents flow around channel bends are strongly influenced by internal density and velocity structure, with large-scale flows being modified by the Coriolis force. Therefore, understanding some of the largest sedimentary structures on the Earth's surface depends on understanding the turbulence processes within turbidity currents.

Secondary Flow in Mildly Sinuous Channel

1989 ◽  
Vol 115 (3) ◽  
pp. 289-308 ◽  
Author(s):  
Helgi Johannesson ◽  
Gary Parker
Keyword(s):  
Secondary Flow ◽  
Sinuous Channel

scholarly journals SECONDARY FLOW AND TRACTIVE FORCE IN COMPOUND SINUOUS CHANNEL

1999 ◽  
Vol 43 ◽  
pp. 329-334 ◽  
Author(s):  
Taisuke ISHIGAKI ◽  
Yasunori MUTO ◽  
Kenji SAWAI
Keyword(s):  
Secondary Flow ◽  
Tractive Force ◽  
Sinuous Channel

The diversity of deep-water sinuous channel belts and slope valley-fill complexes

2013 ◽  
Vol 41 ◽  
pp. 7-34 ◽  
Author(s):  
M. Janocko ◽  
W. Nemec ◽  
S. Henriksen ◽  
M. Warchoł
Keyword(s):  
Deep Water ◽  
Valley Fill ◽  
Sinuous Channel

scholarly journals Sandstone body character, river styles, and geomorphology of the lower Eocene Willwood Formation, Bighorn Basin, Wyoming, USA

2021 ◽  
Author(s):  
Youwei WANG ◽  
Timothy Baars ◽  
Hiranya Sahoo ◽  
Joep Storms ◽  
Allard Martinius ◽  
...  
Keyword(s):  
Water Discharge ◽  
Bighorn Basin ◽  
Early Eocene ◽  
Average Width ◽  
Lower Eocene ◽  
Braided Rivers ◽  
Braided Channel ◽  
Facies Associations ◽  
Sinuous Channel ◽  
Willwood Formation

The lower Eocene Willwood Formation of the intermontane Bighorn Basin, Wyoming, USA, is an alluvial red bed succession with a sand content of ca. 20%-25%. The formation has been studied intensively for paleontology, paleoclimate, and sedimentary reconstruction. However, alluvial sandstone bodies and their corresponding river styles remain little characterized and documented. Here, efforts are made to study the characteristics and river styles of sandstone bodies through ca. 300 m of alluvial stratigraphy in the McCullough Peaks outcrop area based on the field data and a georeferenced 3-D photogrammetric model. Four channel facies associations are recognized, and they are ascribed to four river planform styles: distributary channel, massive trunk-shaped channel, braided channel, and sinuous channel, with the latter two styles being the more abundant. The channel sandstone bodies that show the character of sinuous rivers and those of braided rivers differ significantly in average thickness (6.1 m versus 9.0 m) and insignificantly in average width (on average 231 m) and paleoflow directions (on average N003). Braided-character dominated and sinuous-character dominated river styles are seen to alternate in the outcrop, while they show no spatial dependency in the 10 km2 study area. Bighorn Basin margins varied in the early Eocene, with differing tectonic, geological, and topographic characteristics. The observed mixture of river styles may be attributed to differential influences of axial and transverse river systems and/or climate change that controls water discharge and sediment load. An early Eocene geomorphologic reconstruction is constructed summarizing these new and earlier results.

scholarly journals SECONDARY FLOW AND BED DEFORMATION IN COMPOUND SINUOUS CHANNEL

2000 ◽  
Vol 44 ◽  
pp. 855-860 ◽  
Author(s):  
Taisuke ISHIGAKI ◽  
Yasunori MUTO
Keyword(s):  
Secondary Flow ◽  
Bed Deformation ◽  
Sinuous Channel
Sign in / Sign up

Export Citation Format

Share Document