Surface Wave Processes on the Shelf and Beach

1999 ◽  
Author(s):  
Thomas H. Herbers
Keyword(s):  
Surface Wave ◽  
Wave Processes

Shock-capturing non-hydrostatic model for fully dispersive surface wave processes

2012 ◽  
Vol 43-44 ◽  
pp. 22-35 ◽  
Author(s):  
Gangfeng Ma ◽  
Fengyan Shi ◽  
James T. Kirby
Keyword(s):  
Surface Wave ◽  
Shock Capturing ◽  
Wave Processes ◽  
Hydrostatic Model

Surface Wave Processes on the Continental Shelf and Beach

2008 ◽  
Author(s):  
Thomas H. Herbers ◽  
Tim T. Janssen ◽  
Robert R. Guza ◽  
W. C. O'Reilly
Keyword(s):  
Surface Wave ◽  
Continental Shelf ◽  
Wave Processes

Exit-surface wave reconstruction using a focal series

1992 ◽  
Vol 50 (2) ◽  
pp. 988-989
Author(s):  
W.J. de Ruijter ◽  
M.R. McCartney ◽  
David J. Smith ◽  
J.K. Weiss
Keyword(s):  
Surface Wave ◽  
Spherical Aberration ◽  
Data Extraction ◽  
High Sensitivity ◽  
Geometric Distortion ◽  
Variation Method ◽  
Objective Lens ◽  
Immediate Reconstruction ◽  
Exit Surface ◽  
Electron Microscopes

Further advances in resolution enhancement of transmission electron microscopes can be expected from digital processing of image data recorded with slow-scan CCD cameras. Image recording with these new cameras is essential because of their high sensitivity, extreme linearity and negligible geometric distortion. Furthermore, digital image acquisition allows for on-line processing which yields virtually immediate reconstruction results. At present, the most promising techniques for exit-surface wave reconstruction are electron holography and the recently proposed focal variation method. The latter method is based on image processing applied to a series of images recorded at equally spaced defocus.Exit-surface wave reconstruction using the focal variation method as proposed by Van Dyck and Op de Beeck proceeds in two stages. First, the complex image wave is retrieved by data extraction from a parabola situated in three-dimensional Fourier space. Then the objective lens spherical aberration, astigmatism and defocus are corrected by simply dividing the image wave by the wave aberration function calculated with the appropriate objective lens aberration coefficients which yields the exit-surface wave.

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