NEHRP Clearinghouse
- Title
- Water Waves Generated by Three Dimensional Bed Motion: Abstract for the Paper to be Presented at the International Tsunami Symposium, May 25-29, 1981, Japan.
- File
- PB81238172.pdf
- Author(s)
- Chang, J. J.; Lee, J. J.
- Source
- National Science Foundation, Washington, DC. Engineering and Applied Science., January 1980, 7 p.
- Abstract
- An abstract is presented of a paper on theoretical three-dimensional results for the case of dipole dislocation of the sea floor with a finite aspect ratio (length/width of the bottom dislocation). The method developed by Lee and Chang (1980) for three-dimensional bed motion in the case of rectangular bed upthrust of finite aspect ratio is applied in this study. A potential flow is assumed; thus the velocity potential satisfies Laplace's equation and linearized boundary conditions. The solution is obtained using the Fourier transform for the spatial variables and the Laplace transform for the time variable. Results on water surface profiles for different lengths/widths of bottom dislocation were obtained and interesting features of generated wave patterns were found. Programs were developed for obtaining wave profiles along any arbitrarily chosen coordinates by a mathematical plantom.
- Keywords
- Numerical analysis; Ocean bottom; Earthquake engineering; Wave propagation; Ocean waves; Tsunamis; Earthquakes