吉林大学学报(地球科学版) ›› 2017, Vol. 47 ›› Issue (2): 589-596.doi: 10.13278/j.cnki.jjuese.201702302
高秀鹤, 黄大年, 孙思源, 于平
Gao Xiuhe, Huang Danian, Sun Siyuan, Yu Ping
摘要： 采用协克里金法处理重力或重力梯度数据反演地下3D密度时，岩脉倾角的先验信息是否合理决定了反演结果的好坏。为了使协克里金法在先验信息不充足时也能得到理想的反演效果，我们提出角度扫描的方法来获取岩脉倾角信息：在保持其他反演参数不变的前提下，假设模型的倾斜角度未知，每次引入不同角度进行协克里金反演，再根据先验信息剔除不合理密度值，得到密度分布；统计预测数据与测量数据拟合残差的标准差，根据极小值对应的角度估计岩脉的倾角。本文基于4种不同倾斜角度（0°，45°，90°，135°）岩脉模型的重力梯度垂直分量Tzz验证方法有效性，都能够准确地估计出岩脉倾斜角度。这使得协克里金法在岩脉倾角未知的情况下，也能得到较好的反演结果。
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| [1] | 袁园，黄大年，余青露，耿美霞. 全张量重力梯度数据误差分析及补偿[J]. 吉林大学学报(地球科学版), 2014, 44(3): 1003-1011. |
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