Source input and storage of petroleum hydrocarbon in Jiaozhou Bay

Abstract

This paper analyzed the source input and storage of petroleum hydrocarbon (PHC) in Jiaozhou Bay during 1984-1988. Results showed that PHC contents in different seasons in this bay were all determined bay source input of PHC via river discharge. For seasonal variation, PHC contents were in order of summer > spring > autumn. Precipitation determined the river discharge, river discharge determined the source input of PHC, resulted in the seasonal variations of PHC in Jiaozhou Bay waters. By means of the continuous source input of PHC from river discharged, and the continuous accumulation of PHC in waters, a great deal of PHC was stored in Jiaozhou Bay, resulted in the increasing trend of PHC contents in waters. In case of little source input, the background value of PHC in this bay was 0.005 mg L−1, while in case of source input from marine current was responsible the high value was 0.122 mg L−1. Furthermore, a block diagram model was provided to demonstrate that PHC contents in marine waters were increasing continuously by means of continuous source input. Hence, the control and management of anthropogenic source input of PHC in marine bay was necessary.