海洋科学2017，Vol.41Issue(1)：11-17,7.DOI:10.11759/hykx20160614001
扬子浅滩东南海域海底潮流沙脊、沙波特征
Bedform of tidal sand ridges on the southeast Yangtze Shoal on continental shelf in the East Sea
摘要
Abstract
The southeast Yangtze Shoal on the continental shelf in the East Sea is characterized by tidal sand ridges, and this study measures its three-dimensional morphology using the Seabat8101 sounding system. Tidal sand ridges are arranged in a NW-SE parallel pattern and developed from a depth of 45 m to 50 m. Cross profiles of sand ridges are asymmetrical; the gradient of the south side of most ridges varies between 0.043° and 0.134°, which is steeper than that of the north side. The scales of the sand ridges differ; heights and widths vary from 1.8 m to 13.3 m and 0.6–9.8 km, respectively, and the space between adjacent ridges varies from 8.9–22.4 km. Developed in the flank of sand ridge, several patches of sand waves have NE-SW strikes, where the sand wave height varies from 0.3–1 m with a wave length of about 1 km. An isolated submerged reef stand out in the west of the study area: temporarily named the Yangjiao Reef, it is located between 30°59′7.4″–31°00′00″N, and 124°36′48.7″–124°37′40″E and lies at a depth of 35.9 m at its most shallow part. These sand ridges are classified as qua-active sand ridges and are thus between the types of active and declined sand ridges.关键词
扬子浅滩/潮流沙脊/沙波/暗礁Key words
the Yangtze Shoal/tidal sand ridge/sand wave/submerged reef分类
海洋科学引用本文复制引用
庄丽华,阎军,徐涛,栾振东..扬子浅滩东南海域海底潮流沙脊、沙波特征[J].海洋科学,2017,41(1):11-17,7.基金项目
国家自然科学基金面上项目(41576056) （41576056）
我国近海海洋综合调查与评价专项(908-01-DX23) （908-01-DX23）
中国科学院战略性先导科技专项(XDA11030301)National Natural Science Foundation of China, No.41576056 （XDA11030301）
Research Program of Comprehensive Investigation and Evaluation of Offshore Sea in China (908-01-DX23) （908-01-DX23）
Strategic Priority Research Pro-gram of the Chinese Academy of Sciences, No.XDA11030301 （）
