海洋学研究 ›› 2016, Vol. 34 ›› Issue (4): 1-9.DOI: 10.3969/j.issn.1001-909X.2016.04.001

• 研究论文 •    下一篇

南海东沙海域内孤立波形态研究

徐宋昀1, 许惠平2, 耿明会1, 关永贤3   

  1. 1.同济大学 海洋与地球科学学院,海洋地质国家重点实验室,上海 200092;
    2.中国科学院 深海科学与工程研究所,海南 三亚 572000;
    3.国土资源部 海底矿产资源重点实验室,广州海洋地质调查局,广东 广州 510760
  • 收稿日期:2016-09-24 修回日期:2016-11-24 出版日期:2016-12-15 发布日期:2022-11-24
  • 作者简介:徐宋昀(1991-),女,浙江绍兴市人,主要从事海洋遥感方面的研究。E-mail:xusongyun@163.com
  • 基金资助:
    国家自然科学基金项目资助(41576047,41576054);国家自然科学基金重大计划重点项目资助(91128205);中国科学院创新交叉团队项目资助

Study on the form of internal solitary wave in Dongsha area of the South China Sea

XU Song-yun1, XU Hui-ping2, GENG Ming-hui1, GUAN Yong-xian3   

  1. 1. State Key Laboratory of Marine Geology,School of Ocean and Earth Science,Tongji University, Shanghai 200092,China;
    2. Institute of Deep-sea Science and Engineering,Chinese Academy of Sciences,Sanya 572000,China;
    3. Key Laboratory of Marine Mineral Resource,Ministry of Land and Resources,Guangzhou Marine Geological Survey,Guangzhou 510760,China
  • Received:2016-09-24 Revised:2016-11-24 Online:2016-12-15 Published:2022-11-24

摘要: 本文基于反射地震数据和MODIS遥感数据,对南海东沙海域内孤立波及孤立波群的形态有了系统的认识。内孤立波存在上升型和下降型两种极性波,又根据波形分成“钟形”、“平底形”和“碗形”三种类型,孤立波在波谷处的形状与孤立波振幅有关。单个内孤立波在传播一段时间后,受到各种因素的影响,会发育成波群。东沙海域的不同位置存在两种波群:“有序型”波群和“复杂型”波群,结合它们的位置及波群传播过程,认为这两种波群可能是孤立波从深海向陆架的整个传播过程中的两个阶段,“有序型”波群在被东沙岛阻碍后,受到各种海底地形、东沙环礁、波-波相互作用的影响,转变成“复杂型”波群。

关键词: 东沙环礁, 内孤立波群, 波形, 传播过程

Abstract: Based on multi-channel seismic profiles and MODIS images, the form of internal solitary wave (ISW) packets in Dongsha area of the South China Sea was studied. There are two polar waves: elevation and depression wave, and internal solitary waves can be divided into “bell shape”, “flat shape” and “bowl shape” according to the waveforms. The shape of wave trough is associated with amplitude. Influenced by various factors, the solitions will develop into packets within the propagation process. Two typical wave packets are observed at different locations in Dongsha area: rank-ordered ISW packet and more complex ISW packet, and combined with their locations and propagation, they are considered to be two stages of the propagation process from deep sea to shelf. A rank-ordered wave packet is influenced by submarine topography, Dongsha Reef and wave-wave interaction after Dongsha Island, then turns into a more complex wave packet.

Key words: Dongsha Reef, internal solitary wave packet, waveform, propagation process

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