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Sediment resuspension under action of wind in Taihu Lake,China
  • ISSN号:1001-6279
  • 期刊名称:《国际泥沙研究:英文版》
  • 时间:0
  • 分类:P343.3[天文地球—水文科学;天文地球—地球物理学] TV142.3[水利工程—水力学及河流动力学]
  • 作者机构:[1]Key Laboratory of Integrated Regulation and Resource Department on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, 1 Xikang Road, Nanjing, China, [2]Key Laboratory of integrated Regulation and Resource Department on Shallow Lakes, Ministry ot Education, College of Environment, Hohai University, 1 Xikang Road, Nanjing, China, [3]College of Environment, Hohai University, 1 Xikang Road, Nanjing, China
  • 相关基金:the National Key Basic Research Development Program("973" project) of China (No.2010CB429006); the National Natural Science Funds for Distinguished Young Scholar(No.51225901); National Science Funds for Creative Research Groups of China(No.51421006); PAPD.Acknowledgements We are grateful for the grants from the National Key Basic Research Development Program ("973" project) of China (No. 2010CB429006), and the National Natural Science Funds for Distinguished Young Scholar (No. 51225901), National Science Funds for Creative Research Groups of China (No. 51421006), and PAPD.
中文摘要:

领域研究被承担在泰胡·莱克在不同的风速度下面调查当前的速度,波浪参数和沉积暂停的变化。声学的 Doppler 当前的剖析程序(ADCP ) 和迈达斯 DWR 波浪录音机被用来分别地收集水流和波浪的数据。沉积暂停的特征被一种分层的采样技术调查。测量结果证明当前的速度以风速度在直接比例增加了。当前的速度的垂直分布表示在 0.4 亲戚的重要变化点浇深度。两个都,上面、更低的层跟随了对数的分布。吝啬的风速度和波浪参数(波浪高度和波浪精力密度) 显示出指数的分布,同时类似的分发在吝啬的风速度和当前的速度之间被发现。与升起的表面风,集中和推迟的微粒事(SPM ) 的粒子尺寸的相应增加在水列被观察。粒子的不同类型能在水列影响 SPM 集中。沉积暂停和相应沉积的批评的风速度早期砍应力被发现是 3.7 – 4.0 m s −1 和 0.011 N m −2, 分别地。这研究的结果能被用来帮助理解并且预言不同的风骚乱在浅湖导致的流动结构和水质量的变化。

英文摘要:

A field study was undertaken to investigate the changes of the current speed,wave parameters and sediment resuspension under different wind speeds in the Taihu Lake.The Acoustic Doppler Current Profiler(ADCP) and MIDAS DWR Wave Recorder were used to collect the data of currents and waves,respectively.The characteristics of sediment resuspension were investigated by a layered sampling technology.The measurement results showed that the current speed increased in direct proportion with the wind speed.Vertical distributions of the current speed represented significant inflection points at 0.4 of the relative water depth.Both the upper and lower layers followed logarithmic distributions.The mean wind speed and wave parameters(wave height and wave energy density) showed exponential distributions,meanwhile similar distribution was found between the mean wind speed and current speed.With rising surface wind,a corresponding increase in the concentration and particle size of the Suspended Particulate Matter(SPM) was observed in the water column.Different kinds of particles could influence the SPM concentration in the water column.The critical wind speed of sediment resuspension and the corresponding sediment incipient shear stress was found to be 3.7-4.0 m s^-1 and 0.011 N m^-2,respectively.The results of this study can be used to help understand and predict the changes of flow structure and water quality induced by different wind disturbances in shallow lakes.

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期刊信息
  • 《国际泥沙研究:英文版》
  • 主管单位:
  • 主办单位:国际泥沙研究培训中心
  • 主编:王兆印
  • 地址:北京车公庄两路20号泥沙中心
  • 邮编:100048
  • 邮箱:chyh@iwhr.com
  • 电话:010-68786579
  • 国际标准刊号:ISSN:1001-6279
  • 国内统一刊号:ISSN:11-2699/P
  • 邮发代号:
  • 获奖情况:
  • 国内外数据库收录:
  • 德国国际建筑数据库,英国农业与生物科学研究中心文摘,荷兰文摘与引文数据库,美国地质文献预评数据库,美国剑桥科学文摘,美国科学引文索引(扩展库)
  • 被引量:184