杭州湾冬季表层水体悬浮泥沙质量浓度的逐时变异  

Hourly Variability of Surface Suspended Sediment Concentration in Hangzhou Bay in Winter

作　　者：余丹[1] 于之锋[1] 窦文洁[1] 雷惠[1,2] 潘玉良[1] 凌在盈[1] 周斌[1] 

机构地区：[1]杭州师范大学遥感与地球科学研究院,浙江杭州311121 [2]卫星海洋环境动力学国家重点实验室(国家海洋局第二海洋研究所),浙江杭州310012

出　　处：《杭州师范大学学报（自然科学版）》2014年第4期373-379,共7页Journal of Hangzhou Normal University(Natural Science Edition)

基　　金：国家海洋局海洋公益性行业科研专项项目(201005030-06);浙江省环保厅科研项目(2010A09);浙江省科协软科学研究项目(KX12E-17);国家自然科学基金项目(40971193);卫星海洋环境动力学国家重点实验室开放基金项目(SOED1203)

摘　　要：通过杭州湾3个代表性站位的日内连续观测数据,对其冬季表层水体悬浮泥沙质量浓度的逐时变异进行研究,分析不同的潮时、潮型以及风速等因素对悬浮泥沙的质量浓度变化的影响.结果表明:风速较小且稳定时,不同涨落潮时引起的流速变化是杭州湾悬浮泥沙质量浓度变化的主要原因;在风力较大且不稳定时,风力作用引起的泥沙再悬浮可能会导致悬浮泥沙质量浓度变化异常.The in situ data observed in three representative stations showed that the hourly variability of the suspended sediment concentration of Hangzhou bay surface water in winter was attributed by the variation of tides and winds. The results indicated that when the wind speed was slow and stable, the velocity change caused by different fluctuation tide was the main cause of the variability of the suspended sediment concentration in Hangzhou bay. However, when the wind speed was fast and unstable, the suspended sediment resuspension caused by wind may lead to the abnormal variations of suspended sediment concentration.

关 键 词：悬浮泥沙浓度 流速 风速 逐时变异 杭州湾 

分 类 号：P731.2[天文地球—海洋科学]