摘要
本文研究了影响趋势面拟合度的主要因素,提出了由参与趋势分析的数据个数n、数据的标准偏差σ和所期望的拟合度c估计最佳趋势面次数k的统计方法。同时还给出了多化探指标下,综合选择趋势面次数的k、c图法。按上述方法,选择趋势面,对我国东部几个地区化探资料处理效果良好,这对于多指标,大数量化探异常的研究有一定的参考价值。
On the basis of a study of the main factors affecting the goodness-of-fit trend surface ,the authors present a statistical mothod in which the best power k of trend surface is estimated by using the data number n involved in trend surface analysis,standard deviation σ of dataand expected goodness-of-fit. the authors also present a diagram on which thepower of trend surface can be determined by various indexes of geochemical exploration.the trend surface chosen according to the method presented here has yielded good results in geochemical exploration data processing in some areas of eastern China,which will be important for the study of large quantities of multi-index geochemical anomalies.
出处
《地质论评》
CAS
CSCD
北大核心
1994年第S1期33-38,共6页
Geological Review
关键词
趋势面
拟合度
标准偏差
化探异常
trend surface
goodness-of-fit
standard deviation
geochemical anomalies