1979年以来南黄海辐射沙洲潮滩脊线时空变化研究

发布时间：2018-08-23 20:31

【摘要】：基于遥感和GIS技术,提取了南黄海辐射沙洲1979年、1990年、2002年和2014年4个时期的潮滩脊线,并对时空变化特征进行系统分析。研究显示:(1)辐射沙洲潮滩脊线可分为主线和支线2级,滩脊主线为条子泥-高泥-东沙潮滩脊线,支线为滩脊主线两侧分支;(2)辐射沙洲潮滩脊线空间组合形态总体稳定,条子泥段滩脊主线总体呈东西向,东沙段滩脊主线总体呈南北向,高泥段滩脊主线连接条子泥和东沙;(3)滩脊线演变呈显著空间分异,条子泥段滩脊主线南向迁移显著,东沙段和高泥段滩脊主线总体向东迁移,迁移距离条子泥段滩脊主线高泥段、东沙段,条子泥段滩脊主线中部两侧、东沙段滩脊主线北段南段,条子泥滩脊支线形态和位置变化均较东沙滩脊支线显著。
[Abstract]:Based on remote sensing and GIS technology, the ridge of South Huang Hai radiation sandbank was extracted in 1979, 1990, 2002 and 2014, and the temporal and spatial variation characteristics were analyzed systematically. The results show that: (1) the ridge line of radiative sand island tidal flat can be divided into two grades: main line and branch line, the main line of beach ridge is the ridge line of strip mud, high mud and Dongsha tidal beach, the branch line is the branch of main line of beach ridge, (2) the spatial combination of tidal ridge line of radiative sand island is stable, The main line of the beach ridge of the strip mud section is generally east-west, the main line of the beach ridge of the east sand section is generally north-south, and the main line of the beach ridge of the high mud section connects the strip mud with the east sand. (3) the evolution of the beach ridge line shows significant spatial differentiation, and the main line of the beach ridge of the strip mud section moves southward significantly. The main line of beach ridge in Dongsha section and Gao-nai section is generally moving eastward. The shape and position change of the ridge branch of strizi mudflat is more obvious than that of the east beach ridge.
【作者单位】：国家海洋环境监测中心;国家海洋局海域管理技术重点实验室;
【基金】：海洋公益性行业科研专项(201405028)资助~~
【分类号】：P737.1

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