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CALCULATION OF TOTAL AND RESUSPENDABLE SEDIMENT VOLUME IN LAKE TAIHU
Author(s): 
Pages: 491-496
Year: Issue:  6
Journal: OCEANOLOGIA ET LIMNOLOGIA SINICA

Keyword:  底泥再悬浮太湖;
Abstract: 基于2002年对太湖底泥分布的调查数据,利用最优插值法计算了整个太湖不同区域的底泥厚度.结果表明,太湖底泥总蓄积量大约在18.57亿m3,有泥区面积占整个水面积的47.5%左右.此外,利用Shields方法,计算了太湖表层1m内不同深度上底泥悬浮的临界切应力值,采用SMB浅水波动模式,计算了夏季受东南风和冬季受西北风影响下的波切应力,确定了不同风速情况下所能引起的底泥悬浮量.计算结果发现,上述何种风向情况下,能产生悬浮的临界风速大约在5-6m/s,当风速大于临界风速时,悬浮量随着风速的增加而增加;若风速达到20m/s时,所能引起的最大悬浮量约为2.75亿m3.
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