扬子浅滩东南海域海底潮流沙脊、沙波特征
发布时间：2018-08-24 08:25
【摘要】：利用seabat8101多波束系统对扬子浅滩东南海底地形进行了高精度探测。发现海底呈明显近乎平行排列的条带状起伏,脊谷相间,沙脊大部分呈NW-SE向排列,发育在45~50 m水深范围之内,沙脊横剖面不对称,大部分沙脊西南侧坡度大、东北坡缓。沙脊规模略有差异,沙脊宽度约0.6~9.8 km,沙脊之间间距可达8.9~22.4 km,高度约1.8~13.3 m,研究区内最长可达53 km。部分脊槽过渡区域发育成片链状海底沙波,沙波大致呈NE-SW走向,波高约0.3~1 m,波长1 km左右。研究区中西部有海底礁石孤立地突兀于相对平坦的海底之上,暂定名为扬礁,最浅水深35.9 m,位于30°59'7.4''~31°N,124°36'48.7''~124°37'40''E。扬子浅滩东南海域沙脊是介于活动沙脊和衰亡沙脊之间的准活动沙脊。该研究将为我国海洋开发和海洋经济发展、海洋行政管理以及海洋安全保障提供服务。
[Abstract]:The SeaBat 8101 multi-beam system was used to detect the seabed topography in the southeastern Yangtze Shoal with high precision.It was found that the seabed was undulated in an obvious nearly parallel arrangement with ridges and valleys alternating.Most of the ridges were NW-SE-oriented and developed in the depth range of 45-50 M. The ridge width is about 0.6-9.8 km, the distance between ridges is about 8.9-22.4 km, the height is about 1.8-13.3 m, and the longest is about 53 km in the study area. Underneath the relatively flat seabed, it is tentatively named Yangtze Reef. The shallowest water depth is 35.9 M. It is located in the southeastern part of the Yangtze Shoal between 30 degrees 59'7.4'~31 degrees N, 124 degrees 36'48.7'~124 degrees 37'40'. Foreign security provides services.
【作者单位】： 中国科学院海洋研究所;中国科学院海洋地质与环境重点实验室;
【基金】：国家自然科学基金面上项目(41576056) 我国近海海洋综合调查与评价专项(908-01-DX23) 中国科学院战略性先导科技专项(XDA11030301)~~
【分类号】：P737.2
本文编号：2200204
[Abstract]:The SeaBat 8101 multi-beam system was used to detect the seabed topography in the southeastern Yangtze Shoal with high precision.It was found that the seabed was undulated in an obvious nearly parallel arrangement with ridges and valleys alternating.Most of the ridges were NW-SE-oriented and developed in the depth range of 45-50 M. The ridge width is about 0.6-9.8 km, the distance between ridges is about 8.9-22.4 km, the height is about 1.8-13.3 m, and the longest is about 53 km in the study area. Underneath the relatively flat seabed, it is tentatively named Yangtze Reef. The shallowest water depth is 35.9 M. It is located in the southeastern part of the Yangtze Shoal between 30 degrees 59'7.4'~31 degrees N, 124 degrees 36'48.7'~124 degrees 37'40'. Foreign security provides services.
【作者单位】： 中国科学院海洋研究所;中国科学院海洋地质与环境重点实验室;
【基金】：国家自然科学基金面上项目(41576056) 我国近海海洋综合调查与评价专项(908-01-DX23) 中国科学院战略性先导科技专项(XDA11030301)~~
【分类号】：P737.2
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