scholarly journals SEDIMENT THRESHOLD UNDER OSCILLATORY WAVES

1974 ◽  
Vol 1 (14) ◽  
pp. 44 ◽  
Author(s):  
Paul D. Komar ◽  
Martin C. Miller
Keyword(s):  
Wave Action ◽  
Water Motion ◽  
Sediment Threshold ◽  
Oscillatory Waves

As the velocity of the water motion near the bottom under oscillatory waves is increased, there comes a stage when the water exerts a stress on the particles sufficient to cause them to move. This study reviews data on threshold of sediment motion under wave action and compares the results with the established curves for threshold under a unidirectional current.

scholarly journals THE THRESHOLD OP MOVEMENT OP COARSE MATERIAL IN OSCILLATORY PLOW

1968 ◽  
Vol 1 (11) ◽  
pp. 30 ◽  
Author(s):  
P.J. Rance ◽  
N.F. Warren
Keyword(s):  
Wave Action ◽  
Oscillatory Motion ◽  
Experimental Results ◽  
Basic Material ◽  
Water Tunnel ◽  
Period Range ◽  
Water Motion ◽  
Coarse Material ◽  
Sea Bed

Experimental results are presented from which it is now possible to predict the threshold of movement of shingle. The experiments were conducted in an Oscillating Water Tunnel, (Ref. 1), on the threshold of movement of shingle size material. The Tunnel simulates the oscillatory water motion at the sea bed due to wave action with a semi-orbit range of 0-4.5 metres and a period range of 5-15 seconds. Additionally, a unidirectional current of up to 0.6 m/sec can also be superposed upon the oscillatory motion. Although limestone chips of between 0.32 cm and 2.5 cm diameters were the basic material tested, other materials such as coal and sand were examined in order to observe the effects of the various parameters over a wider range.

Magnitude of the β-Factor Under Wave Action

1987 ◽  
Author(s):  
J. van de Graaff ◽  
R. C. Steijn
Keyword(s):  
Wave Action

Patterns in diversity and composition of the microbenthos of subarctic intertidal beaches with different morphodynamics

2020 ◽  
Vol 648 ◽  
pp. 19-38
Author(s):  
AI Azovsky ◽  
YA Mazei ◽  
MA Saburova ◽  
PV Sapozhnikov
Keyword(s):  
Species Abundance ◽  
Abundance Ratio ◽  
Wave Action ◽  
Coarse Grained ◽  
Sediment Properties ◽  
Β Diversity ◽  
Α Diversity ◽  
Wide Range ◽  
Similar Mode ◽  
Abundance And Diversity

Diversity and composition of benthic diatom algae and ciliates were studied at several beaches along the White and Barents seas: from highly exposed, reflective beaches with coarse-grained sands to sheltered, dissipative silty-sandy flats. For diatoms, the epipelic to epipsammic species abundance ratio was significantly correlated with the beach index and mean particle size, while neither α-diversity measures nor mean cell length were related to beach properties. In contrast, most of the characteristics of ciliate assemblages (diversity, total abundance and biomass, mean individual weight and percentage of karyorelictids) demonstrated a strong correlation to beach properties, remaining low at exposed beaches but increasing sharply in more sheltered conditions. β-diversity did not correlate with beach properties for either diatoms or ciliates. We suggest that wave action and sediment properties are the main drivers controlling the diversity and composition of the intertidal microbenthos. Diatoms and ciliates, however, demonstrated divergent response to these factors. Epipelic and epipsammic diatoms exhibited 2 different strategies to adapt to their environments and therefore were complementarily distributed along the environmental gradient and compensated for each other in diversity. Most ciliates demonstrated a similar mode of habitat selection but differed in their degree of tolerance. Euryporal (including mesoporal) species were relatively tolerant to wave action and therefore occurred under a wide range of beach conditions, though their abundance and diversity were highest in fine, relatively stable sediments on sheltered beaches, whereas the specific interstitial (i.e. genuine microporal) species were mostly restricted to only these habitats.

Wave action bottom reflection source term implementation

2021 ◽  
pp. 101818
Author(s):  
Yuval Yevnin ◽  
Yaron Toledo
Keyword(s):  
Source Term ◽  
Wave Action

Water Motion over a Wafer Surface Rotating in a Single-Water Wet Cleaner

2011 ◽  
Vol 158 (5) ◽  
pp. H487 ◽  
Author(s):  
Hitoshi Habuka ◽  
Shintaro Ohashi ◽  
Taka-Aki Tsuchimochi ◽  
Tetsuo Kinoshita
Keyword(s):  
Wafer Surface ◽  
Water Motion

scholarly journals Current state of studies of shock-wave action on the structure and properties of superconductors

2020 ◽  
Vol 1005 ◽  
pp. 012022
Author(s):  
B Mikhailov ◽  
A Mikhailova ◽  
V Nikulin ◽  
P Silin ◽  
I Borovitskaya ◽  
...  
Keyword(s):  
Shock Wave ◽  
Wave Action ◽  
Structure And Properties ◽  
Current State ◽  
Properties Of Superconductors
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