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Mixing across a lutocline
Author(s) -
Wolanski Eric,
Asaeda Takashi,
Imberger Jorg
Publication year - 1989
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1989.34.5.0931
Subject(s) - settling , buoyancy , mixing (physics) , sediment , turbulence , geology , erosion , richardson number , water column , hydrology (agriculture) , environmental science , sedimentation , mechanics , geomorphology , oceanography , geotechnical engineering , physics , environmental engineering , quantum mechanics
The results of a laboratory experiment showed that mixing across a lutocline (the interface between clear water on top and a fluid‐mud mixture underneath) is controlled not only by mud‐induced buoyancy effects through a Richardson‐number dependence, but also by the sediment‐induced collapse of turbulence in the fluid‐mud layer. The dependence of particle settling velocity on the concentration of suspended sediment can limit the height of resuspension of sediments and stop lutocline erosion after an initial period of active mixing.