A Dynamic Simulation of the Impacts of Oil Spilt Accidents on Coastal Ecosystem in an Enclosed Bay

Abstract

The countermeasures should be taken to cope with the impact of oil pollution that is related to the influence on the coastal ecosystem. Accordingly, the relation between the degree of oil pollution and the coastal ecosystem has to be clarified by taking some appropriate step. For this purpose, an analytical model on the coastal ecosystem is established by using the way of System Dynamic in which phytoplankton, zooplankton, nekton, detritus and dissolved oxygen are assumed to be governing factors in this environmental problem. And a numerical simulation on coastal ecosystem in an enclosed area of Hiroshima bay is carried out in varying the quantity and kind of spilt oil, the season of outbreak of accident, the oil gathering quantity. From the calculated results, the impacts of oil pollution on coastal ecosystem can be grasped considerably.