Stresses in a submarine topography under ocean waves
The problem of submarine slope stability is of interest to both offshore engineering and geology. In an uneven topography, the weight above a horizontal plane induces two-dimensional variation in the static stress field. The action of wave pressure, which changes with depth, further introduces excess pore pressure and dynamic stresses in the sea bottom. In the present paper, we combine a simple analytical theory for the static stress by the present authors, and the recent solution by Mei and Foda for wave-induced stresses in a plane poro-elastic sea bed to account for mild bottom slope and wave shoaling, to obtain the effective stress field in a submarine topography under sea waves. Sample results are given for a ridge and a canyon. In particular the dynamic pore pressure and the combined static and dynamic effective stresses are presented. 10 references, 11 figures.
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge (USA). Dept. of Civil Engineering; Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5268545
- Report Number(s):
- SAND-84-0024C; CONF-840201-9; ON: DE84005722
- Country of Publication:
- United States
- Language:
- English
Similar Records
Quasi-geostropic waves in a stratified ocean with bottom topography
Gravity-induced stresses near topography of small slope