tidal water level 中文意思是什麼
tidal water level
解釋
潮水水位-
Based on 2m contour of surveyed bathymetry from 1976 to 1999 and mean - high - tidal line distracted from remote sensing images acquired by landsat - 5 tm from 1976 to 2000 respectively, quantitative analysis about alluvion and erosion as well as the relationship between accretion of modern yellow river delta and the water and sediment discharge of yellow river is made, and the results indicate the mean - high - tidal level is more effective than 2m contour of the bathymetry. it is found that the accretion of modem yellow river delta is becoming less and less, what ' s more, erosion is even more than alluvion in some recent years. diaokou promontory has been eroded seriously since yellow river changed its course in1976
以一般高潮線反映現代黃河三角洲沖淤演變時，從1976年黃河改道清水溝流路入海到2000年，整個黃洞三角洲凈造陸201 . 5km ~ 2 ，淤積有逐漸變慢的趨勢，甚至出現凈蝕退的年份；刁口河嘴大量蝕退，蝕退速率開始快速，后來逐漸變慢；清水溝河嘴大量淤積，淤積速率開始迅速，后來逐漸變慢，甚至出現凈蝕退；清水溝河嘴南側到支脈溝一段岸線與刁口河嘴以西到灣灣溝一段岸線基本穩定。 -
Abstract : the qiantang estuary with violent hydrodynamic conditions is well known for its tidal bore. the regulation of the estuary in the past, especially the progress since the founding of new china are reviewed. the principles of the regulation and planning of the qiantang estuary formulated in 1960s are expounded, i. e., to narrow the river to reduce the tidal prism, and to increase the ratio of the river flow to tidal discharge. the experience of estuary regulation / reclamation is summarized, especially the engineering measures to protect the groin head and to use polder dykes as sea defense works. finally, the effect is analyzed of the large - scale constraction / reclamation in the estuary on the tides, flooding high water level, estuary bed and the northern deep waterway in the hangzhou bay
文摘:以涌潮聞名的錢塘江河口，動力強勁，破壞力極大.回顧錢塘江河口歷代治理情況，重點記述1949年以來治理工作的進展，論述60年代提出的錢塘江河口治理規劃的指導思想，即縮窄江道，減少進潮量，增大山潮水比值的整治原則.總結整治規劃實施過程中治江圍塗經驗，特別是「以圍代壩」和丁壩壩頭保護等工程措施.分析錢塘江河口大規模治江圍塗后對錢塘江河口潮汐、洪水位、河床以及杭州灣北岸深槽的影響 -
Hydrology regime and river channel evolution become complex because of double influences of river flow and tide. there is little appropriate method so far. therefore, when the impact us assessed of water project on flood control, the following aspects should be focused on, river evolution and stability of project - sections, design tidal level, flood - tide combination scheme, pre - project and post - project impacts on river channel, water level and flow condition
長江河口段為潮流河段，徑流潮流的雙重作用使得區域水文情勢、河道演變規律錯綜復雜，開展防洪影響評價研究時，河道演變及工程段穩定性分析，設計潮位的分析計算，洪潮組合方案擬定，工程前後對河道及水位流態影響的模擬等均是目前尚無十分成熟的方法，需要進一步研究的課題。 -
As the tidal water level fluctuates twice daily, it fills and empties natural basins along the shoreline, suggesting that the currents could be used to drive water turbines connected to generators to produce electricity
海水每天波動兩次，因而沿著海岸線可以充滿和排空自然集水盆地，建議利用水流驅動渦輪機，再連接發電機進行發電。 -
According to the data analysis, the large scale and continuous excavating sand from the riverbed, which has caused the riverbed downcutting, water level decline and relative strengthening of tidal action, is the basic and main cause that raises the saline water intrusion in the peal river network area, but the arid climate and the sea level rise only aggravate the disaster
咸潮災害發生前和發生時期進行的大規模採掘河沙活動使三角洲河床普遍大幅度下切，河流水位下降，潮汐作用相對增強，這是引發咸潮的主要原因；而天旱和海平面上升等則使咸潮災害加重。 -
The model is used to calculate water level and dis - charge of river network with tidal level as independent variable
該模型根據潮水位的變化，模擬河網的水位和流量變化過程。 -
Preliminary study on high water level of cao e river, a hilly, fluvial and macro - tidal estuary
山溪性可沖性強潮河口曹娥江高水位初步研究 -
The nonlinear interation induced tidal period and water level fluctuation obviously. the bottom friction effect is direct ratio to the bottom friction coefficient. the bottom friction effect reduces the set up water level, and minish the set up
非線性效應是造成風暴潮增水水位明顯波動的原因，底摩擦效應對潮位的貢獻與底摩擦系數成正比，底摩擦效應使增水水位降低，減小了增水的幅度。 -
Based on the review of recent advances in surveying and controlling techniques of river models, described in this paper is a new controlling technique, which makes use of a two - way axial - flow pump and a immersion pump to control the up - boundary condition of discharge and the down - boundary condition of water level respectively, with the tidal model of the huangpu river estuary as an example
在對河工模型量測與控制技術進行回顧的基礎上，以黃浦江河口潮汐河工物理模型為例，介紹了潮流河段上邊界採用軸流泵進行雙向流量控制、下邊界採用潛水泵進行水位控制的新技術。 -
According to recorded tidal water level and rate information, the tidal type has been analyzed and tidal characteristic has been ascertained. this provides theoretical reference to the position of water diversion and drainage
根據實測的潮位及潮流資料對潮型進行了分析，確定潮汐的特性，為引排水位置的確定提供理論依據。 -
The correlations between the tide level of coast tidal gauge stations and the tide level of offshore sand ridges, and between mean high water level and mean water level as well as mean sea - level were discussed when studying the tidal gauge records
在潮位資料的分析過程中還探討了沿岸驗潮站與岸外沙洲潮位的相關性以及平均潮位、平均高潮位和平均海平面之間的相關關系。 -
After analyzing, the author got the basic character of tidal flat hydrodynamic : the time of flooding on bare flat and ebbing is basically the same and the time of flooding on pioneer zone of salt marsh is a little short ; the process curve of current speed on bare flat did not appear peak value on the beginning of flooding and at the end of ebbing but presented double peak, that is, it presented double peak in winter and spring and ebbing peak value disappeared in summer and autumn, salt marsh presented single peak character in a year and the process curve in tidal creek presented double peak ; all current direction on every spot presented gyration current and the current speed changed rapidly during the high water level without obvious slack water period
分析得到了潮灘水動力基本特徵：光灘水位漲潮和落潮時間基本相等，而鹽沼前緣帶水位漲潮時間略短；光灘流速過程線在漲潮初和落潮末出現峰值，呈現「雙峰型」特徵，鹽沼前緣帶則冬、春季節呈現「雙峰型」 ，夏、秋季節落潮峰值消失，鹽沼帶四季呈現單峰特徵，潮溝內過程線為「雙峰型」 ；各測點流向均呈現回轉流特徵，在高水位時流向迅速改變，不存在明顯的憩流。 -
The author emphasized on the research of the process of tidal flat hydrodynamic and the process of total nitrogen, total phosphor dynamical transportation and got the conclusion as follows : ( 1 ) open tidal flat of dong tang chongming yangtze estuary was chosen as research object and two typical section plane was set up in order to measure four seasonal hydrology element and get index datum such as water level, current direction, current speed
得到如下結論： （ 1 ）以長江口崇明東灘敞開型潮灘為研究對象，設置了兩條代表性斷面，實測了四個季節的水文要素，獲得了包含水位、流向、流速等指標數據。 -
Optimization model of networks " roughness is established. in this model, objective function is the average scedasticity of relative error for water level and discharge. with the recorded water level and tidal data, the value of roughness is optimized
建立了以流量和水位相對均方差作為目標函數的河網糙率優化模型，並利用實測的河道水位及潮流資料，對河道的糙率取值進行了優化，所建立的糙率優化模型更加合理，計算的效率及精度大大提高了。
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