Two Chemical Spill Patterns in Tidally Dominated San Diego Bay; Conference paper

摘要

A coupled hydrodynamic-chemical spill model is used to investigate the chemical spill in the San Diego Bay. The hydrodynamic model shows that the San Diego Bay is tidally dominated. The chemical spill model shows the existence of two different patterns of chemical spill for pollution (methanol, benzene, liquefied ammonia, etc.) released at 0.5 m depth in the north (32 deg 43 min N, 117 deg 13.05 min W) and the south bays (32 deg 39 min N, 117 deg 07.92 min W). For the north-bay release, the chemical spill in the whole basin with a fast speed of spill in the northern part (12 hours) and a slow speed of spill in the southern part (20 days) with very small concentration. For the south-bay release, the chemical pollutants are kept in the southern part. Very few pollutants reach 32 deg 41 min N parallel (the boundary between the north and south bays).