再悬浮

As a universal physical phenomenon, sediment resuspension plays an important role on the biogeochemical cycle of contamination.

沉积物再悬浮作为一个比较普遍的物理现象，对浅海生态系统污染物的生物地球化学循环具有强烈的干扰作用。

In this model of Tu Men River quality the functional structures of the deoxygenation coefficient k1, reaeration coefficient k2 and BOD sedimentation-resuspension coefficient k3 are established and tbe parameters determined by a regression technique to suit the characteristics of a river in the mountain area of North-Eastern China.

表达式中的参数通过系统识别与参数估计方法确定，因此能较好地反映河流的地理环境特点。特别是κ_3的表达式，它以流量为自变量，用一个单一的解析函数同时描述了江中的沉淀与再悬浮现象，具有独创性。

Results show that floes' VC and D at the surface water were closely related to current velocity; and the peaks of VC lag those of the current velocity. The lag variation during ebb and flood tides is 10-30min and 30-50 min, respectively. Current velocity at 50 cm/s is a turning point of D vs. vertical average current velocity, before the point, Dm increases with current velocity, and decreases after the point. Similarly, VC at 75μl/L becomes a critical point in the surface water, below the point, D increases with VC, and above the point, D stabilizes.Δp is D dependent, larger floes have much lower Δp than smaller floes. Both D and Δp of floes affect ω. In the surface water during spring tide and neap tide, a power exponent relationship exists between Δp and D, and ω and D.

研究表明：①长江口徐六泾表层絮凝体体积浓度主要受水流流速影响，再悬浮现象明显，体积浓度过程线滞后流速过程线，落潮期间滞后10-30min，涨潮则滞后30-50min；②小于一定流速时絮凝体平均粒径随流速增大而增大，大于一定流速时絮凝体平均粒径则随流速增大而减小，徐六泾夫、小潮表层絮凝体在50cm/s的垂线平均流速时出现平均粒径与垂线平均流速关系的转折；③徐六注大、小潮表层絮凝体平均粒径在体积浓度75μl/L时出现平均粒径与体积浓度关系的转折，体积浓度小于75μl/L时粒径随体积浓度增加而增大，超过75μl/L时粒径随体积浓度的增加变化不明显；④絮凝体有效密度由粒径大小控制，粒径大，有效密度小，反之亦然，粒径和有效密度共同决定絮凝体静水沉速，有效密度和沉速与平均粒径之间均存在良好的幂指数关系。

Due to the generation and propagation under the sea surface, regular marine observations cost a lot and are usually difficult to carry out because of the environmental limitations.

内波的传播可以导致湍流和混合，是海洋能量输送的一种途径，并影响局部海域的水交换、沉积和再悬浮。

High concentrations of particulate heavy metals occurred at the beginning of the food-tide, around the slack water and latter of the ebb tide over the course of five tidal cycles, which was mainly caused by the hydrodynamic conditions.

这种变化主要与水动力条件有关，当水体流速增大时，从底部沉积物再悬浮起来的颗粒态重金属对水体中的永久性悬浮颗粒起了很大的稀释效应。

In the Changjiang River estuary, suspended sediment transport is dominated also by advective transport and the Stokes drift effect. In addition, resuspension and vertically circulating currents are important in suspended sediment transport.

水深流速和悬沙浓度的潮变动相关项以及垂向环流的的作用和垂向潮振荡切变作用也同样是引起悬沙输运的重要因子，这表明了再悬浮和垂向环流对悬沙输运的重要作用。

Excitation-Emission Matrix Fluorescence Spectroscopy was employed to study fluorescence characteristics of chromophoric dissolved organic matter readily released from sediment particles during episodes of resuspension, and bottom waters and surface sediment pore waters were compared in all corresponding sites.

对采自厦门湾九龙江入海河口的4个沉积物样品进行了室内再悬浮模拟实验，利用荧光激发－发射矩阵光谱研究了再悬浮过程中从沉积物中释放出的有色溶解有机物的荧光特征，同时通过与相应站位沉积物间隙水和底层水的对比分析，探讨了河口近岸海域的沉积物再悬浮作用作为水体中溶解有机物来源之一的可能性。

Bio-Ba/Ti, bio-Ba /Al were chosen as the sensitive markers to show the variation of the biogenic/terrigenous suspended particles in MNLS through the correlation analysis of 12 major elements of the suspended particles. Comparing with the overlain waters, the content of terrigenous particles in the BNL was increased significantly, but was lower than that in the surface sediment.

与上覆水体相比，近底雾状层内陆源组分显著增加，但较底质沉积物为低；生源组分则明显降低，但比底质沉积物为高，这一规律说明底质沉积物再悬浮对近底雾状层有显著的影响，表明Ba_/Ti和Ba_/Al值可以作为近底雾状层颗粒物的高精度示踪指标，其中Ba_/Al值尤为敏感。

The resuspension rate of the two kinds sediment shows different relationship for the excess shear stress. Thus, the paper adopts the different formulas to solve them.

两种形态的泥沙再悬浮率与净底床切应力显示出的不同关系，因而对不同形态的床沙采用不同的再悬浮率计算公式。

In this paper, the area in focus is Sungo Bay, one of the most large-scale aquaculture areas in North China. From the view of physical, chemical and biologic, mechanism of sediment resuspension and its ecological effect is studied; Moreover, the wave-current coupling model and prediction model of suspended sediment concentration is built.

本研究以我国北方重要养殖海湾——桑沟湾为研究对象，从物理、化学、生物三个角度出发，研究了沉积物再悬浮的发生过程以及再悬浮介质-沉积物的源汇转换角色及其与养殖藻类的关系，构建了波流耦合模型和再悬浮颗粒物浓度预测数学模型。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。