A new method to determine interstitial flow patterns in flume studies of sub-aqueous gravel bedforms such as fish nests
A new method to determine interstitial flow patterns in flume studies of sub-aqueous gravel bedforms such as fish nests
Flume studies often seek to measure and record the interstitial flow within plane-bed sediment bodies and within sediment beds
with wavy surfaces, such as those typified by salmonid fish spawning nests and river-dunes. A simple, inexpensive method is
described to record and map, at discrete points, the spatial variation in interstitial flow speeds in experimental fine gravel beds.
The procedure uses activated carbon granules to capture a tracer: Rhodamine WT dye. Calibration of the uptake of dye by the
carbon for known interstitial flow speeds allows mapping of point flow speed data initially in the nominal x-dimension. Using
interpolation procedures available in a range of commercial ‘mapping’ software packages, the point data can be used to produce
quasi two-dimensional ‘slices’ along sampling planes within the three-dimensional gravel bed. Similarly, three-dimensional
representations can be produced within which lines of equal current speed (‘isovels’) are interpolated such that the flow vectors
(in x, y and z coordinates) may be inferred.
interstitial flow, fish nests, dye dispersion
691-701
Carling, P.A.
8d252dd9-3c88-4803-81cc-c2ec4c6fa687
Whitcombe, L.
cdaf6a6a-0398-4cd6-925a-632af6fe4762
Benson, I.A.
66c3b62e-3175-42c2-b1b0-4f7100332e01
Hankin, B.G.
a09bef5d-e37a-4ca0-80b7-ee08ec70ddd0
Radecki-Pawlik, M.
12dc66b8-58da-4ea4-921f-7259e8bd9928
2006
Carling, P.A.
8d252dd9-3c88-4803-81cc-c2ec4c6fa687
Whitcombe, L.
cdaf6a6a-0398-4cd6-925a-632af6fe4762
Benson, I.A.
66c3b62e-3175-42c2-b1b0-4f7100332e01
Hankin, B.G.
a09bef5d-e37a-4ca0-80b7-ee08ec70ddd0
Radecki-Pawlik, M.
12dc66b8-58da-4ea4-921f-7259e8bd9928
Carling, P.A., Whitcombe, L., Benson, I.A., Hankin, B.G. and Radecki-Pawlik, M.
(2006)
A new method to determine interstitial flow patterns in flume studies of sub-aqueous gravel bedforms such as fish nests.
River Research and Applications, 22 (6), .
(doi:10.1002/rra.930).
Abstract
Flume studies often seek to measure and record the interstitial flow within plane-bed sediment bodies and within sediment beds
with wavy surfaces, such as those typified by salmonid fish spawning nests and river-dunes. A simple, inexpensive method is
described to record and map, at discrete points, the spatial variation in interstitial flow speeds in experimental fine gravel beds.
The procedure uses activated carbon granules to capture a tracer: Rhodamine WT dye. Calibration of the uptake of dye by the
carbon for known interstitial flow speeds allows mapping of point flow speed data initially in the nominal x-dimension. Using
interpolation procedures available in a range of commercial ‘mapping’ software packages, the point data can be used to produce
quasi two-dimensional ‘slices’ along sampling planes within the three-dimensional gravel bed. Similarly, three-dimensional
representations can be produced within which lines of equal current speed (‘isovels’) are interpolated such that the flow vectors
(in x, y and z coordinates) may be inferred.
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More information
Published date: 2006
Keywords:
interstitial flow, fish nests, dye dispersion
Identifiers
Local EPrints ID: 58078
URI: http://eprints.soton.ac.uk/id/eprint/58078
ISSN: 1535-1459
PURE UUID: 67986054-ed44-44bb-b994-75a39d1a94e1
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Date deposited: 12 Aug 2008
Last modified: 15 Mar 2024 11:09
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Contributors
Author:
L. Whitcombe
Author:
I.A. Benson
Author:
B.G. Hankin
Author:
M. Radecki-Pawlik
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