海南岛西部岸外沙波的高分辨率形态特征

曹立华; 徐继尚; 李广雪; 史经昊

海南岛西部岸外沙波的高分辨率形态特征

1 中国海洋大学海洋地球科学学院, 青岛 266003;
2 海底科学与探测技术教育部重点实验室, 青岛 266003

基金项目:

国家重点基础研究发展规划项目(2005CB422304)

详细信息

作者简介:
曹立华(1964-),男,教授,从事灾害地质、海洋工程物探与海洋地质的教学和科研工作

中图分类号: P736.4
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出版历程
- 收稿日期: 2005-12-05
- 修回日期: 2006-05-29

HIGH-RESOLUTION MORPHOLOGICAL CHARACTERISTICS OF SAND WAVES OFF THE WEST HAINAN ISLAND

1 College of Marine Geosciences, Ocean University of China, Qingdao 266003, China;
2 Key Lab of Seafloor Science and Exploration Technology, Ocean University of China, Qingdao 266003, China

摘要

摘要: 利用SIMRAD-EM3000多波束探测系统和DGPS定位系统,对海南岛东方岸外的沙波沙脊区进行了高精度探测,分析结果表明:从海岸到陆架底形具有明显的分带性,依次出现弱侵蚀底形段、沙波沙脊底形段和平坦底形段。沙波仅发育于沙波沙脊段,介于水深20~50 m之间,沙波形态有二维与三维两种,沙波波高多为0.7~2.5 m,波长20~70 m,沙波指数(L/H)为20~60,对称指数为1~3;沙波沙脊区沉积物的搬运方向有明显的规律性,在沙脊的西侧,沉积物主要向北搬运;在沙脊的东侧,沉积物主要向南搬运;沙波的形成和发育主要受潮流场控制,热带风暴对其有改造作用。
- 沙波 /
- 沙脊 /
- 底形 /
- 高分辨率 /
- 多波束探测 /
- 海南岛西部岸外
Abstract: The sand waves in the eastern Beibu Gulf off Dongfang coast were high-accurately investigated by using SIMRAD-EM3000 multibeam sounding system and DGPS position system. The investigated results indicate that:(1) the bedform from coast to continental shelf obviously has the character of zonation, that is poor-erosion zone, the sand wave and ridge zone and the flat zone. Sand waves only exist in the sand wave and ridge zone, which is in the depth of 20~50 m. The sand waves have many shapes, including two and three dimensional sand waves. The wave height is 0.7~2.5 m and length is 20~70 cm, and the ratio of L/H is 20~60 and the symmetry index (the ratio of gentle slope to steep slope) is 1~3. (2) The transportation direction of the sediment in sand wave and ridge zone presents an apparent regularity. On the west edges of the ridges, sediment transport is mainly towards north; while on the east edges of the ridges, sediment transport is mainly towards south. (3) The formation and development of these sand waves are mainly controlled by tidal current and also influenced by tropical storm.
- sand wave and ridge /
- bedforms /
- high resolution /
- multibeam exploration /
- west Hainan Island

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青岛海洋地质研究所1963年始建于南京，几经迁转，于1979年正式在青岛恢复重建，时为“国家地质总局海洋地质研究所”。当前，青岛海洋地质研究所隶属于自然资源部中国地质调查局，主要承担国家基础性、公益性海洋地质调查研究和战略性海洋矿产资源调查评价任务。坚持以海洋基础地质、海岸带综合地质、天然气水合物地质、海洋油气地质、深海地质与矿产、数字海洋地质六大领域为主攻方向，不断加强发展海洋探测、数据处理、测试分析、海洋信息四项核心技术支撑能力，为我国海洋矿产资源开发、海洋环境保护、海防建设、海洋权益维护和海岸带生态文明建设、减灾防灾提供决策依据和支撑。

1979年，青岛海洋地质研究所主办《海洋地质研究》，当年出版2期内部期刊，1980年又出版4期内部期刊。1981年9月15日，宣告正式创刊，公开出版，国内外同步发行。刘光鼎院士题写发刊词，“这个刊物是海洋地质科研的百花园，也是相互沟通交流的桥梁。它以发表海洋地质各个领域及其分支科学的学术论著、科研成果，探讨海洋地质科技（定位、取样、物探、化探、分析与解释等）的发展方向，促进国内外学术交流为主要任务”。1983年，为配合东亚东南亚地学计划协调委员会（CCOP）在青岛建立“区域第四纪地质中心”，特增加刊载第四纪地质的内容，更为现刊名“海洋地质与第四纪地质”。汪品先院士说：“海洋地质和第四纪地质两个学科，在地球科学界都属于‘显学’范畴，世界上有不少脍炙人口的期刊，然而将两者合而为一的期刊，似乎只我中国独有”。

日落归山海，山海藏深意。海洋地质人在山海之间不断探索真理，探索的艰辛与成就悉数记录在了期刊之上。至今已有44卷、221期、3000余篇华章，如同年轮刻画着中国海洋地质成长史。

《海洋地质与第四纪地质》跟随青岛海洋地质研究所风雨同行——观山问海四十五载，谈古论今于洋陆间。未来，期刊还将记录她更多的探索、更多的辉煌！

本刊编辑部

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