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采用筛分法和吸液法分析长兴岛邻近海域11个表层沉积物样品,获得了1Φ间隔的粒度参数数据。分析结果表明,临港工业区附近海域的沉积物类型主要有G、S、S-T-Y、TS、YS、G-S-T、ST、YT共8种,S和ST是该区的优势和次优势组份。平均粒径在-1~2.623Φ,分选系数在0.221~3.213,偏态在0.311~1.311,峰态在0.828~3.978。基于沉积物各粒级的空间分布规律,对研究区域的物质来源情况,进行了分析讨论。
Sieve analysis and liquid absorption method were used to analyze 11 surface sediment samples from Changxing Island adjacent area, and the data of particle size at 1Φ interval were obtained. The results show that there are 8 types of sediments in the sea near Lingang Industrial Zone, including G, S, S-T-Y, TS, YS, G-S-T, ST and YT. S and ST are the dominant and sub-dominant components in this area. The average particle size ranged from -1 to 2.623Φ, the sorting coefficient ranged from 0.221 to 3.213, the skewness ranged from 0.311 to 1.311 and the peak ranged from 0.828 to 3.978. Based on the spatial distribution of sediment grain size, the material source of the study area was analyzed and discussed.