We investigated the dynamics of internal tides (ITs) around the Sofala shelf in the Mozambique Channel based on a 3-D hydrostatic numerical simulation. Two distinct sources of ITs and their basic propagation properties were identified. The depth-integrated period-averaged baroclinic energy flux indicated IT propagation away from the generation sites, particularly toward the east and the southeast. The convergence and divergence of the baroclinic energy flux were attributable mainly to special bathymetry features. Based on these results, 2-D nonhydrostatic experiments were performed to simulate the generation and propagation of baroclinic tides along the main energy path. The model reproduced the two distinct generation processes of internal solitary waves (ISWs): the disintegration of the interfacial mode 1 IT and the beam-induced local generation in the open ocean. The IT beam emanated from the critical slope region, then moved downward toward the deep ocean, where it reflected at the bottom. It then impinged on the pycnocline and created a strong disturbance, which further evolved into an ISW after propagation of approximately 20 km. The simulation also captured the interlaced properties of the two wave types, 60–80 km from the shelf-break region, similar to the available observations.
Skip Nav Destination
Article navigation
December 2018
Journal Paper|
December 01 2018
Numerical Simulation of the Generation and Evolution of Internal Tides and Solitary Waves at Sofala Shelf Break
Wenjia Min
Wenjia Min
Institute of Oceanography, CAS
Search for other works by this author on:
Int. J. Offshore Polar Eng. 28 (04): 361–369.
Paper Number:
ISOPE-18-28-4-361
Article history
Published Online:
December 01 2018
Received:
December 01 2018
Accepted:
December 01 2018
Citation
Li, Qun, Wu, Huiding, and Wenjia Min. "Numerical Simulation of the Generation and Evolution of Internal Tides and Solitary Waves at Sofala Shelf Break." Int. J. Offshore Polar Eng. 28 (2018): 361–369. doi: https://doi.org/10.17736/ijope.2018.mk61
Download citation file:
Sign in
Don't already have an account? Register
Personal Account
You could not be signed in. Please check your username and password and try again.
Could not validate captcha. Please try again.
Pay-Per-View Access
$20.00
Advertisement
9
Views
Cited By
Email Alerts
Advertisement
Suggested Reading
Nonlinear Models of Internal Tide And Internal Solitary Wave Evolution Over a Continental Slope
ISOPE97
Two-Phase-Flow Unstructured Grid Solver: Application to Tsunami Wave Impact
Int. J. Offshore Polar Eng. (September,2011)
Advertisement