| 海洋表层沉积物类型分布图绘制方法研究 |
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| 引用本文： | 曹兵,马越,王长海.海洋表层沉积物类型分布图绘制方法研究[J].海洋通报,2011,30(6):615-618. |
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| 作者姓名： | 曹兵 马越 王长海 |
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| 作者单位： | 上海东海海洋工程勘察设计研究院,上海,200137 |
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| 摘 要： | 介绍一种绘制海洋沉积物类型分布图的新方法.假定构成海洋沉积物粒度(砂、粉砂和粘土)的比例数值在海床分布呈线性或非线性渐变过程.在绘图海域内,“无缝”加密设置有限个插值点,避开不易操作的类型插值问题.利用已知采样点沉积物中砂、粉砂和粘土比例数值,直接采用数值方法单因子插值,根据每个插值点沉积物中砂、粉砂和粘土比例数值,按...
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| 关 键 词： | 沉积物 分类 绘图 数值 |
| 收稿时间： | 2010/6/25 0:00:00 |
| 修稿时间： | 2011/3/28 0:00:00 |
Drawing method study on the distribution graph of surface sediment types at seabed |
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| CAO Bing,MA Yue and WANG Chang-hai.Drawing method study on the distribution graph of surface sediment types at seabed[J].Marine Science Bulletin,2011,30(6):615-618. |
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| Authors: | CAO Bing MA Yue and WANG Chang-hai |
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| Institution: | Shanghai East Sea Marine Engineering Survey and Design Institute, Shanghai 200137, China;Shanghai East Sea Marine Engineering Survey and Design Institute, Shanghai 200137, China;Shanghai East Sea Marine Engineering Survey and Design Institute, Shanghai 200137, China |
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| Abstract: | One new method is introduced in the study of drawing distribution graph of surface sediment types at seabed. Assumed that the proportional numerical value which composed the distribution of surface sediment types at seabed satisfied the gradual change process with linearity or nonlinearity. Finite interpolation points are densely arranged with a joint less method in the drawing sea area to avoid the interpolation problem with types which has difficulty in operation. The proportional numerical value which includes sand, silt and clay at the sediment sample point is directly used to interpolate the interpolation points respectively. Shepard classified scheme of surface sediment is used to determine the sediment type of every point. Then the distribution graph of surface sediment types is formed by specified color of different sediment types. The results show that the new method is superior to the conventional one when drawing surface sediment types distribution graph at seabed. The new method is advised to be used widely in the oceanography. |
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| Keywords: | sediment at seabed classify drawing graph numerical value |
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