|本期目录/Table of Contents|

[1]彭省临,杨中宝,李朝艳,等.基于 GIS 确定地球化学异常下限的新方法[J].地球科学与环境学报,2004,26(03):28-31.
　PENG Sheng-lin,YANG Zhong-bao,LI Chao-yan,et al.New method to determine geochemical anomalies lower limit based on GIS[J].Journal of Earth Sciences and Environment,2004,26(03):28-31.
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第26卷
期数:
2004年第03期
页码:
28-31
栏目:
出版日期:
2004-09-20

文章信息/Info

Title:
New method to determine geochemical anomalies lower limit based on GIS
作者:
彭省临1; 杨中宝1; 2; 李朝艳2; 赖建清1
1.中南大学地学与环境工程学院,湖南长沙410083;2.云南玉溪师范学院地理科学系,云南玉溪653100
Author(s):
PENG Sheng-lin1; YANG Zhong-bao1; 2; LI Chao-yan2; LAI Jian-qing1
1 .College of Geoscience &Environment Engineering , Central South University , Changsha , 410083, China ;2 .Geography department , Yuxi teacher' s College , Yuxi , 653100 , China
关键词:
地理信息系统; 地球化学; 异常识别; 原始数据
Keywords:
geographic information system; geochemistry ; anomalies recognize ; original data
分类号:
P632
DOI:
-
文献标志码:
A
摘要:
运用地理信息系统GIS)空间分析原理,研究了地球化学元素含量与分布面积之间的关系及在 异常下限划分中的应用,并以凤凰山矿田为实例,与分形理论做了对比研究,发现利用分形理论对原始 数据进行处理得到的异常下限为1000×10-6,利用样品平均值取代特高品位后的分形异常下限为240 ×10-6,而利用新方法直接对原始数据进行分析的结果为250×10-6。研究表明,新方法并不要求数据 服从正态分布或对数正态分布,能从原始数据中直接识别致矿异常,是确定地球化学异常下限的简便方 法。
Abstract:
This paper discusses the relation between geochemical element content and distributed area and its application to determine the lower limit of element geochemical anomalies by means of geographical information systemGIS)spatial analysis.With the Fenghuangshan copper field as an example , the results show that the lower limit of element geochemical anomalies is 1 000 ×10-6 using the fractal method and original data, 240 ×10-6 using the substitution of awerage for extreme high grade , and 250 ×10 -6 using new method and original data . The results indicate that the new method can recognize abnormity from the original data and it is unnecessary for variables to conform to normal or log-normal distribution.The new method is a simple method to determine the lower limit of element geochemical anomalies.

参考文献/References:

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备注/Memo

备注/Memo:
[收稿日期]2003-11-20
[基金项目]国家十五科技攻关项目2001BA609A-06)
[作者简介]彭省临1948-),男,湖南长沙人,教授,博士生导师,现从事大地构造与成矿学研究工作。
更新日期/Last Update: 2004-09-20