【摘要】：波浪漫灘是海灘上水陸分界線隨波峰向岸推進(jìn),隨波谷向�；赝说默F(xiàn)象,它是近年來(lái)海岸水沙運(yùn)動(dòng)研究的前沿科學(xué)問(wèn)題,其水沙運(yùn)動(dòng)觀測(cè)分析更是需要優(yōu)先研究的課題。選擇�？跒臣偃蘸�,在2013年11月下旬進(jìn)行了波浪漫灘區(qū)及其鄰近水域懸沙觀測(cè),觀測(cè)結(jié)果表明:1在進(jìn)行漫灘流速分析時(shí),分別對(duì)上爬和回退的平均速度進(jìn)行統(tǒng)計(jì),兩個(gè)坡度下上爬速度大于回退速度分別占80%和65%,說(shuō)明波浪漫灘過(guò)程上爬速度通常要大于回退速度;2波浪漫灘區(qū)比鄰近水域的平均含沙量高1 000倍左右;3波浪漫灘區(qū)內(nèi)從海向岸的懸沙濃度逐漸降低,下界(靠海側(cè))、中間位置、上界(靠岸側(cè))的平均懸沙濃度分別為67 059.6mg/L、50 290.9 mg/L、15 762.0 mg/L;4波浪漫灘區(qū)懸沙濃度變化隨機(jī)性強(qiáng),對(duì)其測(cè)量和特征分析提出了更高的要求。
[Abstract]:Wave floodplain is a phenomenon that the boundary between water and land advances along with the wave peak and recedes to the sea with the wave peak on the beach. It is a leading scientific problem in the research of coastal water and sediment movement in recent years, and the observation and analysis of its water and sediment movement need to be studied first. In the late November 2013, suspended sediment observation was carried out on Haikou Bay Holiday Beach and its adjacent waters. The results show that: (1) the average velocity of climbing and retrogression are counted respectively in the analysis of the velocity of the floodplain. The climbing speed is 80% and 65% respectively under the two slopes, which indicates that the climbing speed is usually larger than the retrogression velocity in the process of wave flooding. (2) the average sediment content in the romantic beach is about 1 000 times higher than that in the adjacent waters; (3) the suspended sediment concentration in the wave floodplain decreases gradually from the coast, and the average suspended sediment concentration of the lower boundary (near the sea side), the middle position and the upper boundary (shore side) are 67,059.6 mg / L ~ (50) 290.9 mg/L,15 / (762.0 mg/L;), respectively. The change of suspended sediment concentration in the romantic beach area of wave 4 is very random, and higher requirements are put forward for the measurement and characteristic analysis of the suspended sediment concentration.
【作者單位】： 河海大學(xué)港口海岸與近海工程學(xué)院;解放軍理工大學(xué)氣象海洋學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(41206163,41076048) 中央高�；究蒲袠I(yè)務(wù)費(fèi)項(xiàng)目(2011B05714)資助
【分類號(hào)】：P731.2;P714

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