Integrating multidimensional geophysical data
Integrating multidimensional geophysical data
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整合多维地球物理数据
DOI：
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发表时间：
2006
期刊：
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通讯作者：
K. Kvamme
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文献类型：
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作者：
K. Kvamme
利用多种地球物理方法进行的调查可以提供关于地下的更深入的见解，因为每种方法通常会产生不同的信息。利用计算机图形学，地理信息系统（GIS），数学和统计的解决方案，整合或“融合”多维地球物理数据的常见方法进行了研究。这些方法被合成为图形，离散和连续域。结果表明，图形化的方法允许复杂的可视化的地下，但只有图像生成和它们的维数往往是低的。离散方法结合了任何数量的地球物理维度，允许应用强大的布尔运算，并产生明确的异常存在或不存在的地图，但这些方法中的许多依赖于任意阈值，仅定义强大的异常。连续数据集成提供了超越其他方法的能力，因为同时表达了稳健和微妙的异常，生成了新的定量信息，并且以回归权重、因子载荷等形式导出了解释性数据，这些数据揭示了相互关系和潜在的维度。所有的方法都适用于在堪萨斯的陆军城获得的一个公共数据集，这是一个第一次世界大战时期的商业综合体，为附近的芬斯顿营（现在的莱利堡）的部队提供服务。利用来自六个地球物理调查（磁梯度测量，电阻率，探地雷达，磁化率，土壤电导率，航空热成像）的数据，各种数据集成揭示了这个几乎被遗忘的城镇的结构。版权所有© 2005年约翰威利父子有限公司。
Surveys that utilize multiple geophysical methods offer greater insights about the subsurface because each one generally yields different information. Common approaches to integrating or ‘fusing’ multidimensional geophysical data are investigated utilizing computer graphics, geographical information system (GIS), mathematical and statistical solutions. These approaches are synthesized into graphical, discrete and continuous domains. It is shown that graphical approaches allow complex visualizations of the subsurface, but only images are generated and their dimensionality tends to be low. Discrete methods incorporate any number of geophysical dimensions, allow application of powerful Boolean operations, and produce unambiguous maps of anomaly presence or absence, but many of these methods rely on arbitrary thresholds that define only robust anomalies. Continuous data integrations offer capabilities beyond other methods because robust and subtle anomalies are simultaneously expressed, new quantitative information is generated, and interpretive data are derived in the form of regression weights, factor loadings, and the like, that reveal interrelationships and underlying dimensionality. All approaches are applied to a common data set obtained at Army City, Kansas, a World War I era commercial complex that serviced troops in nearby Camp Funston (now Fort Riley). Utilizing data from six geophysical surveys (magnetic gradiometry, electrical resistivity, ground‐penetrating radar, magnetic susceptibility, soil conductivity, aerial thermography), various data integrations reveal the structure of this nearly forgotten town. Copyright © 2005 John Wiley & Sons, Ltd.