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seabed erosion     
相关语句
  海底侵蚀
     Material sources for natural gravel beaches include river input, cliff recession, seabed erosion, longshore drift, glacier rafting and human activities.
     天然砾石海滩的物质主要来源于河流输入、海岸侵蚀、海底侵蚀、沿岸输送、人类活动及冰川搬运等。
短句来源
  “seabed erosion”译为未确定词的双语例句
     A PRIMARY NUMERICAL STUDY ON SEABED EROSION AROUND THE CHENGDAO AREA NEAR YELLOW RIVER MOUTH
     埕岛海域海底冲淤的初步数值研究
短句来源
     Prediction about Seabed Erosion/Siltation near the Water Intake of Third phase Project for Qinshan Nuclear Power Plant
     秦山核电三期工程取水口冲淤变化研究和预测
短句来源
     Study on evolution and mechanism of seabed erosion and siltation in Maotou Trough and the adjacent area, the Sanmenwan Bay
     三门湾猫头深潭及附近海域底床冲淤演变及其动力机制
短句来源
     Tidal Flow Numerical Simulation and Calculation of Seabed Erosion and Siltation in Breakerwater Project Sea Area for Wenzhou Central Fishing Port
     温州中心渔港防波堤工程海域潮流数值模拟及底床冲淤计算
短句来源
     To study the formation cause of bottom sediment distributions on the continental shelves of the BYECS from the viewpoint of long-term sediment dynamic evolution process, the distribution patterns of seabed erosion/accretion and bottom sediment type on the continental shelves in six periods since the LGM under the actions of tidal current are simulated.
     为从长期沉积动力演变过程的角度 ,探讨渤、黄、东海陆架底质形成分布的有关成因问题 ,利用数值模拟手段 ,再现了末次盛冰期以来 6个时期渤、黄、东海陆架潮流作用下海底的冲淤格局及底质分布。
短句来源
更多       
  相似匹配句对
     EROSION
     侵蚀
短句来源
     Erosion and Forests
     侵蚀和森林
短句来源
     Calculations of seabed erosion and siltation are made after building the breakwater.
     计算了修筑防波堤后海域底床的泥沙冲淤变化。
短句来源
     Application of Geotextiles in Coast and Seabed River Bank and Riverbed Erosion Protection
     土工布在保护海河堤岸及底床中的应用
短句来源
     The prospect of seabed classification technology
     海底声学底质分类技术的研究现状与前景
短句来源
查询“seabed erosion”译词为用户自定义的双语例句

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  seabed erosion
Seabed erosion occurred at the subaqueous delta front.
      


The Changjiang River Delta is a delta of tremendous scale which is formed under the control of tide and tidal currents. The study on the role of tide and tidal currents in the process of formation and development of the Changjiang River Delta can provide a typical example for the o-ceanic-continental interaction process in the east area of our country. The tide and tidal currents in the Bohai, Huanghai and Donghai seas at the post-glacial marine transgression maximum are simulated, the sediment transport field...

The Changjiang River Delta is a delta of tremendous scale which is formed under the control of tide and tidal currents. The study on the role of tide and tidal currents in the process of formation and development of the Changjiang River Delta can provide a typical example for the o-ceanic-continental interaction process in the east area of our country. The tide and tidal currents in the Bohai, Huanghai and Donghai seas at the post-glacial marine transgression maximum are simulated, the sediment transport field in the Paleo - Yangtze River Estuary (PYRE) and its peripheral area at that time are calculated, and the seabed erosion-accretion pattern is obtained according to the divergence of sediment transport rate. The results show that a distinctive wave belly of standing tidal wave exists at the post - glacial marine transgression maximum and the wave belly lines protrudes towards sea from the wave belly point in the mouth of the PYRE. Under the wave belly control, tidal currents converge to or diverge from the wave belly point. After a single cycle, sediments moved by tidal currents are mainly netly transported into the PYRE in the southeast and east directions, while there is a small amount of sediment to be netly transported to the northeast - southwest area off the northern Jiangsu coast. The above sediment transport certainly results in deposition in the PYRE, in the northeast area to the PYRE, and in the nearshore area between the southern bank of the PYRE and the northern one of the Qiantangjiang River Estuary, while erosion occurs in the east and southeast area to the PYRE. The seabed erosion - accretion pattern is consistent with the situation of convergence or divergence of sediment transport rate. The Changjiang river delta developed under the condition that the Changjiang River supplies a large amount of sediment, and the tide and tidal currents in the open sea impel this sediment to deposit as much as possible in the PYRE and its peripheral area. The tide and tidal currents in the open sea provide necessary and favorable hydrodynamic conditions for the development of the Changjiang River Delta. When the Changjiang River Delta develops, it is very possible to form small scale sand bodies, which may be the embryonic form of the radial sand ridges in the southern Yellow Sea, in the northeast area to the PYRE. The stretch towards sea of the Changjiang River Delta gradually enlarges the Hangzhou Bay.

长江三角洲为巨型潮控三角洲,探讨潮汐、潮流在其形成发育过程中所起的作用可为我国东部地区海陆相互作用过程的研究提供典型实例.数值模拟了冰后期最大海侵时渤、黄、东海的潮汐、潮流;计算了此时古长江河口湾及其周围海区的泥沙输运场,并根据泥沙输运率散度划分了海底冲淤区.得出:冰后期最大海侵时存在大致以古长江河口湾中轴线与其口门处两岸连线的交点为腹点、波腹线向海凸起的独特驻湖波波腹区,在其控制下,外海潮流以古长江河口湾湾口的腹点为顶点作辐聚、辐散运动.在古潮流场作用下,经历一个潮周期后,所有运动着的泥沙都自东、南东方向的外海主要向古长江河口湾内净输运,少量泥沙向古长江河口湾外的北东方向海区净输运.泥沙如此输运导致在古长江河口湾内、古长江河口湾外的北东方向海区以及古长江河口海南岸与钱塘江河口湾北岸之间的岸外海区发生淤积,而在古长江河口湾外的东、南东方向海区发生冲刷.海底的冲淤格局与泥沙输运场中输运率的聚合或发散状况一致.长江三角洲的形成发育是在长江带来大量泥沙,而外海的潮汐、潮流又有利于长江来沙最大限度地沉积在古长江河口海内及其周围海区的情况下实现的,外海的潮汐、潮流为长江三角洲的形成发育提供了必要而又有利的水动力条件.在...

长江三角洲为巨型潮控三角洲,探讨潮汐、潮流在其形成发育过程中所起的作用可为我国东部地区海陆相互作用过程的研究提供典型实例.数值模拟了冰后期最大海侵时渤、黄、东海的潮汐、潮流;计算了此时古长江河口湾及其周围海区的泥沙输运场,并根据泥沙输运率散度划分了海底冲淤区.得出:冰后期最大海侵时存在大致以古长江河口湾中轴线与其口门处两岸连线的交点为腹点、波腹线向海凸起的独特驻湖波波腹区,在其控制下,外海潮流以古长江河口湾湾口的腹点为顶点作辐聚、辐散运动.在古潮流场作用下,经历一个潮周期后,所有运动着的泥沙都自东、南东方向的外海主要向古长江河口湾内净输运,少量泥沙向古长江河口湾外的北东方向海区净输运.泥沙如此输运导致在古长江河口湾内、古长江河口湾外的北东方向海区以及古长江河口海南岸与钱塘江河口湾北岸之间的岸外海区发生淤积,而在古长江河口湾外的东、南东方向海区发生冲刷.海底的冲淤格局与泥沙输运场中输运率的聚合或发散状况一致.长江三角洲的形成发育是在长江带来大量泥沙,而外海的潮汐、潮流又有利于长江来沙最大限度地沉积在古长江河口海内及其周围海区的情况下实现的,外海的潮汐、潮流为长江三角洲的形成发育提供了必要而又有利的水动力条件.在长江三角洲形成发育

Based on historical records and in situ data,this paper first draws the conclusion of seabed erosion in the Chengdao area near the Yellow River mouth,then numerically studies the tidal field and suspended sediment transportation around the area. Using Galerkin finite element method and Bagnold sediment transport formula,this paper computes the seabed erosion in 1976,1988 and 1994 recpectively.The numerical results show good ...

Based on historical records and in situ data,this paper first draws the conclusion of seabed erosion in the Chengdao area near the Yellow River mouth,then numerically studies the tidal field and suspended sediment transportation around the area. Using Galerkin finite element method and Bagnold sediment transport formula,this paper computes the seabed erosion in 1976,1988 and 1994 recpectively.The numerical results show good agreement with measured data with an error of 15%.

从沉积动力学的角度 ,在分析实测和历史资料的基础上 ,首先总结出埕岛海域的海底冲淤变化规律 ,尔后通过潮流场的模拟 ,数值求解输沙方程 ,以研究埕岛海域的海底冲淤。初步探讨运用数值模拟手段来研究海底冲淤变化

The Yangtze River Delta,which is a typical tide controlled delta,was evolved from the huge paleo Yangtze River estuary,and the present Qiantangjiang River estuary is a famous funnel estuary with strong tide in the world.Therefore,the discussion on the sediment dynamic processes and evolutionary mechanism of the development of the Yangtze and the Qiantangjiang River esturies since the post glacial transgression maximum(PGTM)may promote the study on...

The Yangtze River Delta,which is a typical tide controlled delta,was evolved from the huge paleo Yangtze River estuary,and the present Qiantangjiang River estuary is a famous funnel estuary with strong tide in the world.Therefore,the discussion on the sediment dynamic processes and evolutionary mechanism of the development of the Yangtze and the Qiantangjiang River esturies since the post glacial transgression maximum(PGTM)may promote the study on paleo environment evolution and land ocean interaction processes in this area.The M 2 tidal current fields,which have been the main hydrodynamics areas in the paleo Yangtze and Qiantangjiang River estuaries, and their adjacent area along five paleo coastlines and the present coastline since the PGTM,are simulated with a 2 D tide model.Based on the tidal current results,the sediment transport fields of 7 kinds of grain sizes are calculated,and the seabed erosion/accretion pattern is obtained in terms of the divergence of sediment transport rate during each period.The results show that most of the sediment from the Yangtze River is alwalys deposited as much as possible in the paleo Yangtze River estuary and its adjacent area below tidal current fields of different periods.One part of the rest is transported to the northern Jiangsu coast,one part to the Qiantangjiang River estuary,and the remaining moves southward and is transported to the offshore of the Zhejiang Fujian coasts.Thus,accretion has occurred in the northern Jiangsu coast,the Qiantangjiang River estuary and the offshore of the Zhejiang Fujian coasts.Since the PGTM,the paleo Yangtze River estuary has become smaller and smaller,and is finally transformed into the Yangtze River Delta.During this period,the Yangtze River mouth has gradually moved southeastward and finally to the present location;however,the paleo Qiantangjiang River estuary has gradually seaward stretched and been filled at the same time.The development and sedimentation of the Qiantangjiang River estuary is closely related to the filling of the paleo Yangtze River estuary and the seaward stretchability of the Yangtze River Delta.

利用二维潮流数学模型对冰后期最大海侵以来 5期古岸线与现在岸线条件下古长江河口湾、古钱塘江河口湾及其邻近海域的主要水动力 M2 潮流场进行了数值模拟 ;在此基础上 ,分别计算了进入不同时期潮流场的7种粒径泥沙的潮平均单宽悬移输沙率与推移输沙率及其相应的输沙率散度 ,据此得出不同粒径泥沙在当时潮流场中的悬移与推移输运趋势 ,划分了海底淤积区与冲刷区。计算结果表明 :在不同时期的潮流场作用下 ,长江入海泥沙除最大限度地沉积在古长江河口湾 (或古长江河口 )内及其附近海域外 ,部分向苏北沿海净输运 ;部分向钱塘江河口湾内净输运 ;部分南下向浙江—福建沿海的离岸区净输运 ,并使这些地区发生淤积。自冰后期最大海侵以来 ,古长江河口湾不断缩小 ,最终转变为长江三角洲。在该过程中 ,长江河口不断东进南偏最终达到现今长江口的位置 ,古钱塘江河口湾则不断向海扩展 ,同时不断被充填。钱塘江河口湾的发育和沉积与古长江河口湾的充填、长江三角洲的向海伸展密切相关。

 
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