Abstract:
:A particle-tracking model to simulate the dispersion of contaminants in the Strait of Gibraltar has been developed. The model solves the hydrodynamic equations off-line and tidal analysis is carried out to determine tidal constants for the two main constituents. Tidal constants and residuals are stored in files that are read by the dispersion model. A lagrangian approach is used to solve dispersion; diffusion and decay are simulated by a Monte Carlo method. A method for assessing the areas of the Strait with higher probability of being affected by contamination occurring after an accident in the shipping routes is given. Generally speaking, the fate of a pollutant discharge strongly depends on wind conditions. Winds from the east tend to retain contamination into the Strait. As a consequence, transverse mixing occurs and both Spain and Morocco coasts are affected by contamination. Under calm conditions and west winds, contaminants are flushed out of the Strait faster and transverse mixing does not occur. Thus, only part of Morocco coast has a higher probability of being affected by contamination.
journal_name
Mar Pollut Bulljournal_title
Marine pollution bulletinauthors
Periáñez Rdoi
10.1016/j.marpolbul.2004.04.003subject
Has Abstractpub_date
2004-10-01 00:00:00pages
613-23issue
7-8eissn
0025-326Xissn
1879-3363pii
S0025-326X(04)00149-3journal_volume
49pub_type
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journal_title:Marine pollution bulletin
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