| 况忠,安全,黄广才,付榕榕,李思发.核密度分析在弱矿化蚀变遥感异常后处理阶段图件制作及意义[J].贵州地质,2025,42(4):547-553, 522 |
| 核密度分析在弱矿化蚀变遥感异常后处理阶段图件制作及意义 |
| Density Estimation for Statistics and Data Analysis[M]Chapman and HallMap Making and Significance of Kernel Density Estimation in the Post-Processing Stage of Weak Mineralization Alteration Remote Sensing Anomalies |
| 投稿时间：2025-08-17 |
| DOI： |
| 中文关键词: 核密度分析 弱矿化蚀变 遥感异常 后处理 图件制作及意义 |
| 英文关键词:Kernel density estimation Weak mineralization alteration Remote sensing anomaly Post-treatment Map making and significance |
| 基金项目:黔科合基础MS〔2025〕013；黔自然资函〔2022〕632 号，〔2023〕119 号，〔2024〕42 号，〔2025〕71 号资助 |
| 作者 | 单位 | | 况忠 | 1.贵州省地质调查院,贵州贵阳550018
2.自然资源部基岩区矿产资源勘查技术创新中心,贵州贵阳550018 | | 安全 | 1.贵州省地质调查院,贵州贵阳550018
2.自然资源部基岩区矿产资源勘查技术创新中心,贵州贵阳550018 | | 黄广才 | 1.贵州省地质调查院,贵州贵阳550018
2.自然资源部基岩区矿产资源勘查技术创新中心,贵州贵阳550018 | | 付榕榕 | 1.贵州省地质调查院,贵州贵阳550018
2.自然资源部基岩区矿产资源勘查技术创新中心,贵州贵阳550018 | | 李思发 | 1.贵州省地质调查院,贵州贵阳550018
2.自然资源部基岩区矿产资源勘查技术创新中心,贵州贵阳550018 |
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| 中文摘要: |
| 基于遥感数据提取的弱矿化蚀变遥感异常(简称“遥感异常”)大多呈离散状态(或星闪状)分布，如何用好这些离散数据，并服务于地质找矿，是从业者最关心的问题。作者以ETM数据提取的遥感异常作为研究对象，在arcgis中利用核密度加权估算法进行后处理应用和研究，制作形成了研究区较为直观的、具有二维搜索中心的核密度分析图；该图解决了离散数据重点不突出、遥感异常筛选凭经验手动圈定、遥感异常与地层和构造较难有效结合等问题。文章再现了核密度分析图的制作过程及其参数设置，并对容易出现的问题进行了试验和分析，认为带宽选择300600 m，输出单元选择515 m较合适。经多个项目应用和验证，是南方植被区遥感异常参与找矿预测和构造研究较为有效的方法和手段之一。 |
| 英文摘要: |
| Most remote sensing anomalies of weak mineralization alteration(abbreviated as ‘remote sensing anomalies’)extracted from remote sensing data exhibit discrete(or star-like)distributionsHow to effectively utilize these discrete data to support geological prospecting is the primary concern for practitionersUsing ETM data-derived remote sensing anomalies as the research subject，the author applied kernel density weighted estimation(KDE) in ArcGIS for post-processingThis approach generated an intuitive KDE map for the study area，featuring distinct two-dimensional search centersThis map addresses key challenges including:Lack of focus in discrete data Experience-dependent manual screening of anomalies Difficulties in effectively correlating anomalies with strata and structuresThe article details the workflow and parameter settings for creating the KDE map，with experimental analysis of common issuesThe study recommends optimal parameter ranges:Bandwidth selection:300 to 600 meters Output cell size:5 to 15 metersIt has been proven through multiple project applications that this method is one of the relatively effective approaches and means for mineral prospecting prediction and structural research utilizing remote sensing anomalies in the vegetation-covered areas of southern China |
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