Abstract:
The marine economy plays a vital role in the era
of economic development in Vietnam. However, it also causes
various incidents for natural resources and the environment
among which oil spills have caused significant environmental
and ecological harms. Therefore, rapid forecast of the oil
spreading process is an important and decisive supporting
factor the response and ecological hazard mitigation. By
integrating the Euler-Lagrange method into the 3-D
hydrodynamic model-based finite element method, we build a
model that simulate the spread of oil spills with scenarios
occurring in different hydrometeorological conditions in the
southern waters of Vietnam. The model describes the horizontal
composition to reflect the preservation of heat and salt of the
tangled current dynamics, and the mixing distance. Dirichlet
boundary conditions are derived from tidal oscillations at the
open boundary nodes, the sliding stress at the bottom and the
air temperature at the surface. The case study of oil spill was
taken from the collision of the Lisa Auerbach with the My An 1
ship in Ba Ria - Vung Tau sea, and this ship containing 40 tons
of oil on September 14, 2021, being a severe environmental risk.
Simulation results of oil spread showed oil spills had affected
ecosystems of mangroves and wetlands in the Mekong Delta.
