| Title: | WAVE FIELD MODIFICATIONS BY ELLIPTIC BATHYMETRIC ANOMALIES WITH GRADUAL TRANSITIONS IN DEPTH |
| DOI No: | 10.1142/9789812701916_0018 |
| Source: | COASTAL ENGINEERING 2004 (pp 243-255)
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| Author(s): | CHRISTOPHER J. BENDER
Taylor Engineering, Inc. 9000 Cypress Green Drive, Suite 200, Jacksonville, FL 32259, USA
ROBERT G. DEAN
University of Florida, Civil and Coastal Engineering Department, 575 Weil Hall, Gainesville, FL 32611, USA
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| Abstract: | This paper presents a method to determine wave field modifications resulting from elliptic bathymetric anomalies (pit or shoal) with gradual transitions in depth. The analytic (semi-numeric) method is valid for linear waves in a uniform depth domain with an arbitrary number of concentric elliptic forms of different, but uniform, depths combined to represent either a pit or a shoal. Sections present the theory, formulation, and results in the form of contour plots of the relative amplitude in the presence of the depth anomaly. The elliptic forms in the model induce wave transformation through processes of wave refraction, wave diffraction, and wave reflection with asymmetry in the solution for oblique incident wave angles. The results investigate the effect of the incident wave angle on the resulting wave field. Future work will focus on the associated shoreline changes from elliptic anomalies. |
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