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对规则网的 469个测站的多金属结核丰度和 93个测站的 Mn、 Cu、 Co、 Ni元素进行趋势面分析 ,经 F检验 ,各变量的变异性显著 ,拟合度较低 ,表明多金属结核丰度及 Mn、Cu、Co、Ni金属元素的控制因素比较复杂。趋势面分析结果与相关分析结果一致 ,Mn、Cu、Ni元素有极相似的趋势特征 ,有两个轴向分布 ,一个为东西向轴 ,高值区在东部 ,另一个为北西向轴 ,高值区在北西部 ;结核丰度与 Co也有极相似的趋势特征 ,高值区在西部。应用逐次趋势面分析的结果将结核丰度的地质特征分解成各种简单控制因素的叠加 ,使对多金属结核的控矿因素、分布规律和物质来源的研究方法多样化
The polymetallic nodule abundance of 469 stations in the regular network and the trend surface analysis of Mn, Cu, Co and Ni in 93 stations were tested. The results of F-test showed that the variability of each variable was significant and the fitting degree was low, It shows that the controlling factors of the abundance of polymetallic nodules and the metal elements Mn, Cu, Co and Ni are complicated. Trend surface analysis results are consistent with the results of the correlation analysis. Mn, Cu, and Ni elements have very similar trend characteristics. There are two axial distributions, one is the east-west axis, the high value region is in the east and the other is the northwest axis. The value area is in the northwest part; the tuberculosis abundance and the Co also have very similar trend characteristics, and the high value area is in the west. Applying the result of successive trend surface analysis, the geological characteristics of tuberculosis abundance can be decomposed into superposition of various simple control factors, which can diversify the research methods of ore-controlling factors, distribution rules and material sources of polymetallic nodules