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重磁异常结合其他地质、地球物理资料进行相关分析,有利于提高位场异常地质解释的质量。利用等效点源反演绘制的图件,来研究北美及相邻海域的地面自由空间重力异常、POGO(线轨道地球物理观测)卫星磁异常,以及区域热流和构造信息间的视一空间相关关系。在卫星高度上相关异常的区域位场,也用泊松理论在重、磁场导数异常之间,移动窗口线性回归作定量分析。在大陆地区观测到长波长重磁异常之间的一种反相关关系。重力异常为负、磁力异常为正的地区,其特点是地壳相对较厚,磁化强度较高。例如:一个突出的磁力高与爱那达科盆地向辛辛那堤穹窿延伸的重力低相对应。磁力异常为负、重力异常为正的地区,其特征是地壳较薄,区域热流值较高。如:北美和中美洲的科迪勒拉地区,以及黄石地热区。虽然,海洋区域的重磁异常显示弱相关,但统计相关的符号一般为正。
Correlation analysis of gravity and magnetic anomalies with other geologic and geophysical data is helpful to improve the quality of anomalous geological interpretation of the potential field. In this paper, we use the equivalent point source to reconstruct the drawn maps to study the ground free space gravity anomaly in North America and its adjacent sea areas, the POGO satellite magnetic anomalies, and the spatial correlation between regional heat flux and tectonic information relationship. In the satellite anomalies related to the regional field, but also with the Poisson theory in the heavy, magnetic field anomalies between the mobile window linear regression for quantitative analysis. An inverse relationship between long-wavelength gravity and magnetic anomalies observed in the mainland. Areas with negative gravity anomaly and positive magnetic anomaly are characterized by relatively thick crust and high magnetization. For example, a prominent magnetism high corresponds to the low gravity extended to the Cincinnati Dome by the ACN-Dakota Basin. Areas with negative magnetic anomalies and positive gravity anomalies are characterized by a thin crust and high heat flow in the area. Such as Cordillera in North and Central America, and the Yellowstone geothermal area. Although the gravity and magnetic anomalies in the marine areas show weak correlations, the statistics related to the signs are generally positive.