The Variation of Loss Amount Decided by Time and Space

Based on the investigation data of Hg in Jiaozhou Bay in May and August of 1991, according to the horizontal and vertical matter content variation model proposed by the author, the horizontal loss amount, vertical disputed amount and vertical sediment amount of Hg at surface and bottom were determined, and the modelling diagram of horizontal and vertical variation of Hg content were established. In May and August, the variation of absolutely and relatively horizontal loss amount of Hg at surface and bottom was 0.021-0.060μg/L and 40.74-74.07%, the variation of absolutely and relatively vertical disputed amount was 0.004-0.049μg/L and 20.00-60.49%, and the absolutely and relatively vertical sediment amount was 0.010-0.033μg/L and 19.60-61.11%. The variation of horizontal loss amount showed that, Hg content in bay, whether transported in eastern nearshore waters or bay center in May and August, caused the high horizontal loss at surface and bottom. The variation of vertical loss amount disclosed that Hg content at surface and bottom were vertical sediment amount in eastern nearshore waters, but vertical disputed amount in bay center. Hence, it was believed that space, not time, decided that Hg content at surface and bottom was vertical sediment amount or vertical disputed amount. The variation of vertical loss amount further disclosed that in May or August, these two waters were far from each other, however, the relatively vertical variation amount of Hg content at surface and bottom was consistent, changing from 19.60-20.00% to 60.49-61.11%. Therefore, it was believed that space, not time, decided the relatively vertical variation amount.