| 山东半岛东北部海域悬浮体季节分布及控制因素 |
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| 引用本文： | 朱颖涛,冯秀丽,朱龙海,胡日军,姜胜辉.山东半岛东北部海域悬浮体季节分布及控制因素[J].海洋地质与第四纪地质,2021(2):30-42. |
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| 作者姓名： | 朱颖涛 冯秀丽 朱龙海 胡日军 姜胜辉 |
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| 作者单位： | 中国海洋大学海洋地球科学学院;中国海洋大学海底科学与探测技术教育部重点实验室 |
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| 基金项目： | 国家自然科学基金"山东半岛海湾对泥沙的捕获机制——以威海湾为例"(41776059)。 |
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| 摘 要： | 基于2018年山东半岛东北部海域冬、夏两季悬浮体浓度、浊度及水温和盐度调查资料,分析了研究区水体悬浮体浓度的季节性变化,探讨了其控制因素。结果表明:夏季浊度在0.2~37.8FTU之间变化,冬季浊度在1.5~100.1FTU之间变化,均表现为底高表低、东高西低的特征。夏季水温分层明显,表现为表层高、底层低的特征,盐度整体无明显变化;冬季温盐垂向上混合均匀,平面上表现为近岸低温低盐水体向远岸高温高盐水体的过渡。悬浮体浓度分布受潮流、波浪、温跃层和温盐锋面等因素影响。夏季,悬浮体垂向上受到温跃层影响,底层悬浮体难以向表层输运;平面上潮混合和波浪差异性作用阻碍了悬浮体的水平输运。冬季,强风浪促使悬浮体垂向混合剧烈,表层悬浮体浓度明显较夏季变高;平面上沿岸流和黄海暖流形成的温、盐锋面阻碍了水团间悬浮体的输运。
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| 关 键 词： | 悬浮体浓度 温跃层 锋面 山东半岛 |
Seasonal distribution of suspended sediments in the water northeast to Shandong Peninsula and its controlling factors |
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| ZHU Yingtao,FENG Xiuli,ZHU Longhai,HU Rijun,JIANG Shenghui.Seasonal distribution of suspended sediments in the water northeast to Shandong Peninsula and its controlling factors[J].Marine Geology & Quaternary Geology,2021(2):30-42. |
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| Authors: | ZHU Yingtao FENG Xiuli ZHU Longhai HU Rijun JIANG Shenghui |
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| Institution: | (College of Marine Geoscience,Ocean University of China,Qingdao 266100,China;The Key Lab of Submarine Geoscience and Prospecting Techniques,Ministry of Education,Ocean University of China,Qingdao 266100,China) |
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| Abstract: | Based on the characteristics of suspended matter,such as sediment content,turbidity,temperature and salinity,acquired in the summer and winter of 2018 in the water northeast to the Shandong Peninsula,we studied the seasonal variation of suspended sediment and it’s controlling factors.The results show that the turbidity varies from 0.2 to 37.8 FTU in summer,1.5 to 100.1 FTU in winter,of which both are high on the bottom and low on the surface and high in the east and low in the west.Concerning water temperature,it is obviously stratified in summer,high on the surface and low on the bottom.However,there is no obvious changes as far as salinity is considered.In the winter time,both the temperature and salinity show a transition from the low temperature and low salinity water mass near the shore to the high temperature and high salinity water mass off the coast on plane,and evenly mixed in vertical direction.The distribution of suspended sediment content is controlled by various factors,such as tide,wave,thermocline,temperature and salinity fronts.In summer,affected by the thermocline vertically,the suspended sediments in bottom water are difficult to move into the upper layer,while tidal mixing and wave differentiation will accelerate the exchange of suspended sediment between the near shore and the far shore areas.However,the content of surface suspended matter is significantly higher in winter,because of the intensification of vertical mixing by strong wind and waves.The temperature and salinity front,formed by the coastal current and the Yellow Sea warm current,will block the exchanges of suspended sediments between water masses. |
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| Keywords: | suspended sediment content thermocline fronts Shandong Peninsula |
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