本文關(guān)鍵詞： 東郊椰林 人工島 岸線 沙嘴 連島沙壩　出處：《中國海洋大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年10期 　論文類型：期刊論文

【摘要】：海南島東郊椰林人工島建設(shè)于砂質(zhì)海岸外,對(duì)海岸線變化有非常大的影響。選取5景遙感影像,運(yùn)用DSAS數(shù)字岸線分析系統(tǒng)分析人工島建設(shè)前后岸線變化,同時(shí)利用SMC模擬系統(tǒng)分析人工島建設(shè)前后水動(dòng)力變化情況,用于分析研究泥沙運(yùn)移趨勢(shì)。結(jié)果表明人工島建設(shè)后,該海岸西段人工島與陸地之間海域波浪場(chǎng)明顯減弱,而沿岸流則由人工島建設(shè)前的自東向西,變?yōu)槿斯u建設(shè)后后兩股沿岸流在島體后方相匯,利于此處泥沙堆積。通過岸線變化分析,人工島建設(shè)之后西段岸線受人工島的遮蔽由侵蝕轉(zhuǎn)變?yōu)橛俜e,最大淤積速率可達(dá)70m/a,形成現(xiàn)在向海凸出沙嘴,最終將演化為連島沙壩,東段岸線接受不到島體的庇護(hù)則仍表現(xiàn)為侵蝕狀態(tài)。
[Abstract]:The coconut forest artificial island in the eastern suburb of Hainan Island is built off the sandy coast, which has a great influence on the shoreline changes. Five remote sensing images are selected to analyze the shoreline changes before and after the construction of the artificial island by using DSAS digital shoreline analysis system. At the same time, SMC simulation system was used to analyze the hydrodynamic changes before and after the construction of artificial islands, which was used to study the trend of sediment transport. The results showed that the wave field in the sea area between artificial island and land in the western part of the coast obviously weakened after the construction of artificial island. The coastal current changed from east to west before the artificial island was built, and changed into the convergence of the two coastal currents behind the island body after the artificial island construction, which is conducive to the accumulation of sediment here. Through the analysis of the shoreline variation, After the construction of the artificial island, the coast line of the western section was shaded by artificial island from erosion to siltation, and the maximum deposition rate could reach 70 m / a, forming the sand mouth that is now protruding to the sea, which will eventually evolve into an even island sandbar. The eastern shore line still shows erosion when it can not accept the shelter of the island body.
【作者單位】： 河北省地礦局秦皇島礦產(chǎn)水文工程地質(zhì)大隊(duì);河北省海洋地質(zhì)資源調(diào)查中心;國家海洋局秦皇島海洋環(huán)境監(jiān)測(cè)中心站;
【基金】：三沙市國土資源與環(huán)境保護(hù)局資助項(xiàng)目(HNYS-DZ-2015-001)資助~~
【分類號(hào)】：P737.1;P756.8
，

本文編號(hào)：1520283