【摘要】：岬灣海岸海灘的穩(wěn)定性及其演變是砂質(zhì)海岸研究的重要內(nèi)容�；诙嗥谶b感影像、海灘沉積物粒度分布,并采用岬灣海灘平衡形態(tài)模型(MEPBAY),分析探討了海南島東部萬寧4個典型岬灣海岸海灘的穩(wěn)定性及其模型的應(yīng)用。研究表明,除東澳灣凸角處于不穩(wěn)定狀態(tài),其余海岸處于靜態(tài)或準(zhǔn)靜態(tài)平衡狀態(tài);岬灣海灘沉積物粒度在遮蔽段和開敞段有明顯的差異,相鄰海灘之間沒有明顯的泥沙交換,每個岬灣海灘都是相對獨立的地貌單元;模型中上岬角控制點選取應(yīng)考慮島礁及水下礁坪;拋物線模型可以拓展應(yīng)用于有離岸島情況下的海灣。研究成果可為岬灣海灘的穩(wěn)定性評估和管理提供科學(xué)依據(jù)。
[Abstract]:The stability and evolution of promontory beach is an important part of sandy coast research. Based on multi-stage remote sensing images and beach sediment granularity distribution, the stability of four typical coastal beaches in Wanning Bay, East Hainan Island, and their application were studied by using (MEPBAY), model of Cape Bay beach equilibrium morphology. The results show that, except the convex corner of Dongao Bay is in unstable state, the other coasts are in static or quasi-static equilibrium state. There are obvious differences in sediment granularity between sheltered section and open section, there is no obvious sediment exchange between adjacent beaches, and each beach is a relatively independent geomorphological unit. In the model, the top headland control point should be selected by considering the reef and the underwater reef flat, and the parabola model can be extended to the bay with offshore islands. The results can provide scientific basis for the stability assessment and management of Cape Bay beach.
【作者單位】： 華東師范大學(xué)河口海岸學(xué)國家重點實驗室;
【基金】：海洋公益性行業(yè)科研專項經(jīng)費項目(201405037)
【分類號】：P737.1
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本文編號：2421717