摘要
等时线拟合方法的选择是提高同位素测年精度的关键因素之一。这里利用Matlab语言编写了基于York双误差回归模型的等时线拟合程序,包括isoacc.m、samw.m、errs.m和resi.m等模块,实现了读入数据,输入衰变常数和斜率迭代初始值,选择权重方法,以及计算截距、年龄、MSWD和绘图的功能。选用Brooks1972的数据,分别作三种权重等时线拟合,结果与Faure1977[9]的计算结果一致。程序简练,易使用,运算速度快,运行稳定。
The choice of isochron regression line fitting methods is the key factor of improving the precision of isotope dating.A program was designed for isochron regression line fitting based on York's two-error regression treatment model by Matlab,which contained isoacc.m,samw.m,errs.m and resi.m.The program was implemented with functions like importing data,inputting decay constant and initial value of slope,choosing method of weighting,calculating intercept,age and MSWD,plotting,etc.The result of 3 isochron regression line fitting methods by data of Books 1972 was consistent with what calculated by Faure 1977.The program is concise fast and steady.
出处
《物探化探计算技术》
CAS
CSCD
2009年第5期511-513,共3页
Computing Techniques For Geophysical and Geochemical Exploration
基金
全国危机矿山接替资源找矿专项资助(20089941)
