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Sediment transport in the Yellow Sea and East China Sea

机译：黄海和东海的泥沙运输

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摘要

Eight survey cruises in different seasons have been conducted in the Yellow Sea (YS) and East China Sea (ECS) during the period from 2000 to 2008. Suspended sediment concentration (SSC) and hydrological data were collected during each cruise. Data analysis showed that total suspended sediment mass was approximately 0.18 × 10~9 tons in the surveyed area during spring and autumn seasons. Highly turbid waters were found in the shallow waters between the Subei coast, the Changjiang estuary and the Zhejiang coast with seasonal variations. The investigation provided convincing evidence that suspended sediments were transported from the Subei coast and the southern entrance of the Yellow Sea Trough to the central YS. Muddy patches were found at the sea bed when tidal currents were too weak to erode the bottom sediments and water column stratification and eddies provided favorable conditions for trapping the fine-grained suspended sediments. The investigation indicated that the different front may have different effect on sediment transport during different seasons. The front between the Yellow Sea Cold Water and the coastal water in the Subei coast appeared to trap the high SSC sediments on the shallow water side of the front. During summer, the front along the Zhejiang coast seemed to prevent suspended sediments from transport across the front due to circulation in the front zone and upwelling along the Zhejiang coast. During winter, sediments were likely transported across the front to the central continental shelf of the ECS with the help of the downwelling and lateral Ekman transport driven by monsoon winds.
机译：2000年至2008年期间，黄海（YS）和东海（ECS）进行了八次不同季节的巡查航行。每次巡查都收集了悬浮泥沙浓度（SSC）和水文数据。数据分析表明，春季和秋季，调查区的总悬浮泥沙量约为0.18×10〜9吨。在苏北沿岸，长江口与浙江沿岸之间的浅水区中发现了高度浑浊的水，并具有季节性变化。调查提供了令人信服的证据，表明悬浮的沉积物是从苏北海岸和黄海槽的南入口运到YS中部的。当潮流太弱而不能侵蚀底部沉积物和水柱分层时，在海床发现泥泞的斑块，而涡流为捕获细颗粒的悬浮沉积物提供了有利条件。调查表明，不同季节，不同锋面对泥沙输送的影响可能不同。苏北沿岸的黄海冷水与沿海水之间的锋面似乎将高SSC沉积物捕获在锋面浅水侧。在夏季，由于前区的环流和沿浙江海岸的上升流，浙江沿海的前缘似乎阻止了悬浮的沉积物穿过前缘。在冬季，借助季风风驱动的下涌和侧向埃克曼运移，沉积物很可能穿过前缘运至ECS的中部大陆架。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2011年第3期|p.248-258|共11页
  • 作者

    L.X. Dong; W.B. Guan; Q Chen; X.H. Li; X.H. Liu; X.M. Zeng;

  • 作者单位

    State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, PR China;

    State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, PR China;

    State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, PR China;

    State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, PR China,East China Normal University, Shanghai 200241, PR China;

    State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, PR China;

    State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, PR China;

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  • 正文语种 eng
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  • 关键词

    suspended sediment transport; yellow sea; east China sea; front;

    机译：悬浮泥沙输送;黄海东海;面前;

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