物探与化探Issue(2)：370-376,7.DOI:10.11720/j.issn.1000-8918.2014.2.29
局部空间自相关及其在勘探地球化学中的空间聚集研究
A STUDY OF GEOCHEMICAL EXPLORATION SPATIAL CLUSTER IDENTIFICATON BASED ON LOCAL SPATIAL AUTOCORRELATION
摘要
Abstract
Using local Moran's and indexes, the authors studied spatial cluster of 1482 stream sediment samples in a specific area of 8130 km2 on the scale of 1:200000. The comparison of the anomaly range computed by robust statistics with that computed by local spa-tial autocorrelation shows that local Moran's index can well detect relatively weak spatial cluster and small areas while local index is suitable for spatial cluster detection in a strong degree of spatial cluster and large areas. The degree and area of geochemical spatial cluster by using these approaches accord with the objective reality and are in good conformity with known deposits (ore spots).关键词
局部Moran的Ii指数/局部G*i指数/空间聚集/勘探地球化学Key words
local Moran's index/local index/spatial cluster/geochemical exploration分类
天文与地球科学引用本文复制引用
Nguyen Tien Thanh,刘修国,任泽..局部空间自相关及其在勘探地球化学中的空间聚集研究[J].物探与化探,2014,(2):370-376,7.基金项目
长三角重点地区三维地质填图信息系统建设项目 （）
