夏、冬两季长江口及邻近海域悬浮物的分布特征及其沉积量  

DISTRIBUTION FEATURES OF SUSPENDED MATTER AND AMOUNT OF SEDIMENT AT THE CHANGJIANG ESTUARY AND ADJACENT AREA

作　　者：庞重光[1] 王凡[1] 白学志[1] 张明翰[1] 

机构地区：[1]中国科学院海洋研究所,青岛266071

出　　处：《海洋科学》2003年第12期31-35,共5页Marine Sciences

基　　金：国家重点基础研究发展规划项目G1999043803号;中国科学院创新项目KZCX2 -207号

摘　　要：利用2001年7～8月 ,2002年1月两个航次的悬浮物浓度资料 ,并参考其它水文参数 ,简要分析长江口及邻近海域悬浮物的分布特征 :无论夏季还是冬季 ,长江入海悬浮物总是向东南方输运 ;冬季由于再悬浮作用显著 ,悬浮物浓度明显高于夏季 ,且南北分布范围也明显增大 ,垂向分布均匀。同时采用数值模拟的海流流速值和观测的悬浮物浓度值计算悬浮物的断面通量 ,并最终得计算区悬浮物夏、冬两季的沉积量 ,夏、冬季长江口及邻近海域悬浮物的沉积量分别为0.79×108t,1.44×108t。Based on field observations of suspended matter concentrations in July 2001, August 2001 and January 2002, distribution patterns were analyzed. Suspended mat ter from the Changjiang River was always transported in a southeasterny directio n, regardless of season or in summer; In winter suspended matter concentration w as almost vertically uniform, and significantly higher than that in summer due t o strong re-suspension. Suspended matter flux along different sections is calculated according to nu merically simulated sea water velocities and observed suspended matter concentration; The amount of sediment in the Chan gjiang Estuary and adjacent sea area was calculated to be 0.786×10 8 tons in s ummer and 1.437×10 8 tons in winter.

关 键 词：夏季 长江口 邻近海域 悬浮物 分布特征 沉积量 冬季 

分 类 号：P734.23[天文地球—海洋化学]