Horizontal distribution trends of Cd in Jiaozhou Bay

[摘要] Using investigation on Cadmium (Cd) in surface and bottom waters in this bay during 1984-1986, this paper analyzed the horizontal distributions, identified the different distribution trends, and provided block diagram model to demonstrate the migration processes of Cd. Results showed that the horizontal distriution trends of Cd in bay waters were determined by the source inputs, the transport paths and the horizontal and vertical water's effects. This indicated that the distribution trends of Cd contents in surface and botom waters would be consistent even if the source strengths were different. There were three different horizontal distribution trends, namely "Yang's horizontal distribution trends". The horizontal migration processes were showing three different status as 1) the settlement of Cd had not been arrived at sea bottom, 2) the settlement of Cd had been arrived at sea bottom, and 3) the accumulation of Cd had been occurred at sea bottom. The path ways and remaining traces of Cd could be defined in according to "Yang's horizontal distribution trends".

[发布机构] Accountancy Shool, Xijing University, Xian; 710123, China^1;North China Sea Environmental Monitoring Center, SOA, Qingdao; 266033, China^2;Fu Foundation School of Engineering and Applied Science, Columbia University, 10025, United States^3

[效力级别] 无线电电子学

[关键词] Block-diagram model;Bottom water;Cadmiums (Cd);Different distributions;Horizontal distribution;Jiaozhou Bay;Migration process;Source strength