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| 波浪对太湖梅梁湾底泥氧气侵蚀深度的影响 | |
| 引用本文： | 王永平,吴挺峰,丁艳青,申 霞,朱广伟,洪大林,秦伯强.波浪对太湖梅梁湾底泥氧气侵蚀深度的影响[J].河海大学学报(自然科学版),2011,39(2):126-130. |
| 作者姓名： | 王永平 吴挺峰 丁艳青 申 霞 朱广伟 洪大林 秦伯强 |
| 作者单位： | 1. 中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室,江苏,南京,210008;中国科学院研究生院,北京,100039 2. 中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室,江苏,南京,210008 3. 南京水利科学研究院河流海岸研究所,江苏,南京,210029 |
| 基金项目： | 国家自然科学基金重点项目，杰出青年基金，江苏省基础研究计划 |
| 摘 要： | 通过室内波浪水槽试验,利用溶解氧微电极研究了波浪对太湖梅梁湾底泥中氧气侵蚀深度的影响.结果显示:太湖梅梁湾底泥在水槽中一夜平衡后,氧气侵蚀深度约为5mm.经4 cm波高的波影响2 h后,表层底泥基本没有被侵蚀,而表层溶解氧质量浓度从原来的6.29 mg/L上升至6.90mg/L,氧气侵蚀深度约达6mm.初始值和4cm小波后两者拟合方程具有相近的斜率(-0.0777与-0.C728).经10cm波高的波影响2h后,可能受采泥管管壁形成的回旋涡流影响,底泥表层的物理侵蚀达到(1.33±0.15)cm.同时,氧气侵蚀深度降至3.2mm左右,其拟合方程的斜率减小为0.0123.由此可以表明:小波可以增加底泥表层溶解氧和氧气侵蚀深度;而大波能造成表层底泥受到严重的物理侵蚀并破坏原溶氧层而形成新的较浅的溶氧层,最终将可能影响微生物活动和营养盐释放. |
| 关 键 词： | 波浪水槽试验 物理侵蚀 溶解氧微电极 氧气侵蚀深度 太湖 |
| 修稿时间： | 2011/5/3 0:00:00 |
Effects of waves on oxygen penetration depth of sediment from Meiliang Bay of Taihu Lake |
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| WANG Yong-ping,WU Ting-feng,DING Yan-qing,SHEN Xia,ZHU Guang-wei,HONG Da-lin,QIN Bo-qiang.Effects of waves on oxygen penetration depth of sediment from Meiliang Bay of Taihu Lake[J].Journal of Hohai University (Natural Sciences ),2011,39(2):126-130. | |
| Authors: | WANG Yong-ping WU Ting-feng DING Yan-qing SHEN Xia ZHU Guang-wei HONG Da-lin QIN Bo-qiang |
| Institution: | WANG Yong-ping1,2,WU Ting-feng1,DING Yan-qing1,SHEN Xia3,ZHU Guang-wei1,HONG Da-lin3,QIN Bo-qiang1(1.State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China,2.Graduate School of Chinese Academy of Sciences,Beijing 100039,3.River and Harbor Engineering Department of Nanjing Hydraulic Research Institute,Nanjing 210029,China) |
| Abstract: | Through laboratory wave flume experiments,the effects of waves on oxygen penetration depth(OPD) of lake sediment from Meiliang Bay of Taihu Lake were studied by using oxygen microsensor.It was found that the OPD of sediment from Meiliang Bay was about 5 mm after being balanced in the flume for one night.After effects of little waves 4 cm in height for 2 hours,the surface of the sediment was not eroded by and large.While the oxygen concentration of sediment surface was raised from 6.29 mg/L to 6.90 mg/L,and ... |
| Keywords: | laboratory wave flume experiment physical erosion oxygen microsensor oxygen penetration depth Taihu Lake |
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