| 摘要: |
| 南海北部外陆架和上陆坡分布着大量的各种类型的深水沙波, 经过统计, 这些沙波的活动性十分迥异, 有着不同于浅水沙波的运移机制。基于国内外对该地区沙波研究成果的总结, 指出天文潮、风暴潮等因素均不可能造成海底沙波的持续运动。南海北部同时是世界上内波活动最频繁的区域, 与沙波活动区存在空间一致性。经过本文的综述分析, 南海北部频发的内波可以造成海底的强流, 是造成该海域海底沙波活动的主要原因, 未来应在此框架理论下, 进行相关证实研究。 |
| 关键词: 南海北部 东沙群岛西部海域 海底沙波 内波 |
| DOI：10.11759/hykx20170109002 |
| 分类号: |
| 基金项目:国家自然科学基金项目(41576056) |
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| Progress of sand waves and internal waves research in sea area west of the Dongsha Islands in the northern South China Sea |
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ZHANG Hong-yun,ZHUANG Li-hua,YAN Jun,MA Xiao-chuan
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| Abstract: |
| There are many types of deepwater sand waves on the continental shelf and upper slope of the northern South China Sea. Statistical analyses indicate that these sand waves have a different migration mechanism than shallow-water sand waves. Based on a summary of domestic and international research on sand waves in this region, we found that factors such as the astronomical tide and storm surge cannot cause the sustained movement of sand waves. The northern South China Sea is also the world’s most frequent internal-wave activity area, and there is spatial consistency in the sand-wave activity areas. The frequently occurring internal wave in the northern South China Sea can cause strong flow in the seabed, which is the main reason for the seabed sand-wave activity. In the future, relevant research should be performed to verify this theory. |
| Key words: the northern South China Sea western sea of the Dongsha Islands sand waves internal waves |
