摘要
研究基于GIS的海洋光学调查数据空间插值方法及其原理,主要探讨了反距离加权插值法、普通克里格法的球体模型和指数模型算法。通过对比分析利用不同插值算法得到的分布图,并在误差分析的基础上,选择制作海洋光学调查数据分布图的最佳空间插值方法。以海洋光学要素中的总颗粒物吸收系数为例,研究表明,普通克里格算法的球体模型能够更加准确地反映我国近海水体总颗粒物吸收系数的空间分布特点和变化趋势。
Spatial interpolation methods and principles of marine optical data based on GIS is researched, including inverse distance weighted interpolation, ordinary Kriging spherical model and exponential model interpolation. Comparing with different distribution maps and error analysis, the best spatial interpolation method for marine optical data is selected. Absorption coefficient of total partic- ulate matter is chosen from ocean optics elements. Research shows that ordinary Kriging spherical model algorithm more accurately reflect its spatial distribution characteristics and its trends.
出处
《海洋技术》
北大核心
2009年第2期111-114,共4页
Ocean Technology
基金
我国近海海洋综合调查与评价"专项:"ST11区块海洋光学调查与研究"(908-01-ST11)
