The evolution of submarine channels under the influence of Coriolis forces: experimental observations of flow structures

Cossu, Remo and Wells, Mathew G. (2013) The evolution of submarine channels under the influence of Coriolis forces: experimental observations of flow structures. Terra Nova, 25 1: 65-71. doi:10.1111/ter.12006


Author Cossu, Remo
Wells, Mathew G.
Title The evolution of submarine channels under the influence of Coriolis forces: experimental observations of flow structures
Journal name Terra Nova   Check publisher's open access policy
ISSN 0954-4879
1365-3121
Publication date 2013-02
Sub-type Article (original research)
DOI 10.1111/ter.12006
Open Access Status Not Open Access
Volume 25
Issue 1
Start page 65
End page 71
Total pages 7
Place of publication Chichester, West Sussex United Kingdom
Publisher Wiley-Blackwell Publishing
Language eng
Subject 1907 Geology
Abstract We present results from experimental gravity and turbidity currents to show that at high latitudes, the Coriolis effect strongly influences the internal flow structure in submarine channel systems. At high latitudes, Coriolis forces deflect the downstream velocity core, and consequently areas of deposition and erosion, to one side of the channel system. Over time, this supports the evolution of low-sinuosity submarine channels. These findings help explain the recently found relation that channels at low latitudes often show strongly sinuous planform geometries, whereas channels at high latitudes tend to be much less sinuous. On the basis of our observations and an existing conceptual model for channel evolution, we propose a process model for sedimentation regimes in turbidity currents, which is applicable to all latitudinal settings.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Civil Engineering Publications
 
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Created: Thu, 18 Feb 2016, 21:15:01 EST by Jeannette Watson on behalf of School of Civil Engineering