Waves + Hydro-Sedβ¬Β¦Β Β· Waves + Hydro-Sed Dr Ruth Reef Monash University (Matthew Peck, Celia...
Transcript of Waves + Hydro-Sedβ¬Β¦Β Β· Waves + Hydro-Sed Dr Ruth Reef Monash University (Matthew Peck, Celia...
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Waves + Hydro-SedDr Ruth Reef
Monash University
(Matthew Peck, Celia Martinez Ramos, Sabrina Sayers
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ππ€π =ππ2
64ππ»π02 ππ
Linear Wave Theory: An approximation of the time-mean wave energy flux (wave power) (kW/m2 time unit converted to seconds) :
πΈ =1
16πππ»π0
2
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CalciumZinc
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A range of moments operate on a sand particle: fluid force, gravitational force, drag
Friction angle(geometry+frictional properties of material
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Critical shear stress by particle-size classification for determining approximate condition for sediment mobility at 20 degrees Celsius.
Reference graphs and tables are used in conjunction with formulas to estimate sediment transport rates (Qs):
Itβs hard to resuspend a bed of small grains!
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Caution:Highly Stylised
Low flow velocities: deposition also of smaller particles
High flow velocities: No deposition, erosion occurs
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What is erosion? There is no significant relationship between lateral and vertical changes at sites weβve studied (Gordon and Reef 2019)
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β’ 5 sites in WP Bayβ’ 100 pins per siteβ’ Rectangular Gridβ’ Varying distance from the
shorelineβ’ Varying vegetation typesβ’ Seasonal patterns
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RTK and Drone Surveys+ inSAR retmote sensingβ’ Permanent aluminum base plates, repeat surveys, long term
subsidence(+ French Island, because eddy covariance tower is there)
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