本文選題：東海島 + 海岸沖淤　； 參考：《海洋科學(xué)進(jìn)展》2016年04期

【摘要】：通過無人機(jī)遙感、岸灘監(jiān)測(cè)剖面、監(jiān)測(cè)樁和沉積物粒度分析等手段研究了東海島東北部典型岸段短期沖淤變化特征。結(jié)果表明,研究區(qū)岸線在一年半的時(shí)間內(nèi)呈現(xiàn)后退趨勢(shì),侵蝕嚴(yán)重區(qū)域岸線平均后退約10m;岸灘夏季年度變化以侵蝕為主,侵蝕嚴(yán)重部位主要位于低灘,最大下蝕可達(dá)1m以上;半年度剖面監(jiān)測(cè)結(jié)果顯示,岸灘季節(jié)性變化明顯,存在冬淤夏沖的特征;受風(fēng)暴潮的影響,岸灘在2014-06—09發(fā)生嚴(yán)重侵蝕,部分區(qū)域后濱沙丘后退約20m;沉積物平均粒徑分布的區(qū)域差異表明,沉積物有沿岸向北和向陸一側(cè)運(yùn)移的趨勢(shì)。風(fēng)暴潮、蝦池排污和燈塔是影響東海島典型岸段沖淤的主要因素。
[Abstract]:By means of UAV remote sensing, beach monitoring profile, monitoring piles and sediment granularity analysis, the characteristics of short-term scour and siltation in typical coastal sections in the northeastern part of the East Sea Island were studied. The results show that the shoreline in the study area shows a retrogressive trend in one and a half years, and the average receding of the shoreline in the seriously eroded area is about 10 m.The annual variation of the shoreline in summer is dominated by erosion, and the serious erosion area is mainly located at the low beach, and the maximum erosion can reach more than 1m. The results of semi-annual section monitoring show that the seasonal variation of shoreline is obvious, and the characteristics of winter silt and summer scour exist, and the beach is seriously eroded by storm surge in 2014-06-09. The regional difference of average grain size distribution of sediment indicates that there is a trend of coastal northward and landward migration of sediment. Storm surges, shrimp ponds and lighthouses are the main factors affecting the scouring and silting of typical coastal sections of the East Sea Island.
【作者單位】： 國(guó)家海洋局第一海洋研究所;國(guó)家海洋局第三海洋研究所;廣東省海洋與漁業(yè)環(huán)境監(jiān)測(cè)中心;
【基金】：海洋公益性行業(yè)科研專項(xiàng)——我國(guó)典型海島地質(zhì)災(zāi)害監(jiān)測(cè)與預(yù)警示范研究(201005010) 中央級(jí)公益性科研院所基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目——近50年來廣西大陸岸線變遷及其與人類活動(dòng)的關(guān)系(2012G09)
【分類號(hào)】：P737.1
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本文編號(hào)：1848785