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热带海洋学报 ›› 2014, Vol. 33 ›› Issue (3): 52-56.doi: 10.11978/j.issn.1009-5470.2014.03.008cstr: 32234.14.j.issn.1009-5470.2014.03.008

• 海洋地貌学 • 上一篇    下一篇

南海珊瑚环礁开放程度模型构建研究*

杨娟1, 2, 3, 苏奋振2, 3, 石伟2, 3, 左秀玲2, 3, 方月2, 3   

  1. 1. 中国地质大学信息工程学院, 湖北 武汉 430074; 2. 中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室,北京 100101 3. 中国南海研究协同创新中心, 江苏 南京 210093
  • 收稿日期:2013-09-13 修回日期:2013-11-15 出版日期:2014-05-29 发布日期:2014-05-30
  • 通讯作者: 苏奋振(1972~), 男, 研究员, 博士生导师, 研究方向为时空信息提取和海洋海岸带应用。
  • 作者简介:杨娟(1988~), 女, 陕西省汉中市人, 硕士生, 研究方向为遥感信息提取。E-mail: yangj@lreis.ac.cn
  • 基金资助:
    国家自然科学基金项目(41271409); 国家高技术研究发展计划重大项目(2012AA12A406)

Research on building a model of the open type for coral atolls in the South China Sea

YANG Juan1, 2, 3, SU Fen-zhen2, 3, SHI Wei2, 3, ZUO Xiu-ling2, 3, FANG Yue2, 3   

  1. 1. Faculty of Information Engineering, China University of Geosciences, Wuhan 430074, China; 2. State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; 3. Collaborative Innovation Center of South China Sea Studies, Nanjing 210093, China
  • Received:2013-09-13 Revised:2013-11-15 Online:2014-05-29 Published:2014-05-30

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4

摘要： 南海环礁发育过程中形成了开放程度不同的环礁类型, 依据环礁不同地貌部位的几何因子作为反映环礁开放程度的指标可以定量划分环礁开放程度类型。如果将澙湖潮汐通道作为环礁地貌结构要素用来反映环礁开放程度, 则潮汐通道可以成为新的度量因子。利用高分辨率遥感影像结合GIS技术, 以澙湖潮汐通道的几何参数为主构建反映环礁开放程度的模型, 结果表明, 以口门宽度与礁体中轴线长度之比为指标建立的经验式, 可用来划分环礁开放程度类型, 封闭型环礁的开放度为0, 准封闭型环礁的开放度为0~0.06, 半开放型环礁的开放度为0.06~0.25, 开放型岛礁的开放度为0.25~1。因此, 采用这一量化表达式反映南海环礁的开放程度类型, 可为珊瑚环礁的开放程度发育规律研究提供科学工具。

Abstract: All coral atolls consist of several facies zones. Tidal inlet, which is the channel to connect the lagoon and the sea, has different geometric shapes. According to different angle and principle, coral atolls have been classified into various types. In order to identify the open type of atolls quantificationally, two geometric parameters of tidal inlet are regarded as new metrical factors to construct a new expression. The new description function is the ratio of tidal inlet’s width to atoll’s midline. Finally, the threshold division of the atolls’ type is formed on the basis of the new expression. The threshold result shows that the open degree of the enclosed atolls is 0, the contiguous enclosed atolls is between 0 and 0.06, the half-opening atolls’ is between 0.06 and 0.25, and the opening atolls’ is between 0.25 and 1. Thus, the new function can be used to reflect the openness of different atolls for development regularity of coral atolls in the South China Sea.