It is also found that, when a PSAW is excited on ST-cut 90°X propagation, the quartz substrate exhibits the characteristics of the existence of only the shear horizontal component, no spurious response, and zero-power flow angle (PFA).
Effect of metallization on the power flow angle of SH0 waves in thin piezoelectric plates
In particular, they are able to give correct responses adapting to the change of system operation conditions, including the changing of system configuration, power flow direction, and source and tapped-offload conditions.
In this formula the normalized eigen function in ordinary dyadic Green's function is replaced by the field induced by unit power flow.
Upon developing the Green's functions in terms of plane waves, growing "evanescent" waves in the direction of power flow are shown to exist inside the slab.
As well as the finer sediment may be reworked and redistributed shoreward by tidal current nearby the river mouth.
The paleacurrent pattern in the area is similar to that of the tidal current system in the South Yellow Sea.
So it is inferred that the convergent-divergent tidal current system existed during stage of sand body formation, and they should be radial in plane.
The present study on Jiangsu salt marshes, eastern China, shows that variations in tidal current velocities in salt marsh creeks are controlled by the local tidal wave characteristics and the bed slope and elevation of the salt marshes and creeks.
In order to illustrate whether this mechanism is significant, a real case is studied, in which the wind waves propagate on a tidal current flowing over the sea bottom covered with sand waves.