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| The application of aeromagnetic three-component upward continuation to recognizing physical parameters of geological body |
Xi-Zi LI1, Hua GUO1,2( ), Song HAN2, Hao-Jun LIU2, Qiang ZHENG1 |
1. College of Geophysics and Information Technique, China University of Geosciences, Beijing 100083, China
2. Aero Geophysical Survey and Remote Sensing Center for Natural Resources, Beijing 100083, China |
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Abstract China developed the aeromagnetic three-component measurement system in 2017; nevertheless, the application of the three-component data is still in the exploratory stage. At first, the authors derived the upward continuation formula of magnetic three-component data and obtained the formula for the first time. Then the authors designed cube combinational models, with depth of center point ,volume, magnetization in different depths and depth of top surface as the variables. The relationship between minimum continuation height and physical parameters was obtained. In addition, the authors summarized some laws from these models. Finally, these conclusions were combined with the actual aeromagnetic three-component data. According to the geological condition of the survey area, the interpretation was made and good results were obtained.
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Received: 29 October 2018
Published: 15 August 2019
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Corresponding Authors:
Hua GUO
E-mail: hyguohua@126.com
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Plan of the first group model
a— the position of the A group model on X-Y plane; b— the position of the A group model on X-Z plane; c— the position of the B group model on X-Y plane; d— the position of the B group model on X-Y plane
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Contour map of the first group model
a— the contour map of A group model's north-component before continuation; b— the contour map of A group model's north-component after continuation 472 m; c— the contour map of A group model's north-component after continuation 3 540 m; d— the contour map of B group model's north-component before continuation; e— the contour map of B group model's north-component after continuation 826 m; f— the contour map of B group model's north-component after continuation 3 894 m
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Profile anomalies of the first group model
a— the graph of north-component of A group's profile along X direction; b— the graph of north-component of A group's profile along X direction after continuation 472 m; c— the graph of A group model's after filtering out deep abnormal body; d— the graph of north-component of B group's profile along Y direction; e— the graph of north-component of B group's profile along Y direction after continuation 826 m; f— the graph of B group model's after filtering out deep abnormal body
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| 参数 | A组1号 | A组2号 | B组1号 | B组2号 | | 立方体中心点位置/m | (2500,2000) | (1500,2000) | (2000,1500) | (2000,2500) | | 中心埋深/m | 500 | 1000 | 200、250、300、350、400 | 500、600、700、800、900 | | 磁化强度/(A/m) | 1 | 1 | 1 | 1 | | 测点间距/m | 118 | 118 | 118 | 118 |
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The geometric and physical parameters of the first group model
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Continuation value of the first group model
a—the line chart of continuation height of filtering out A group's deep body;b—the line chart of continuation height of filtering out B group's deep body
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Plan of the second group model
a—the position of the A group model on X-Y plane; b—the position of the A group model on X-Z plane; c—the position of the B group model on X-Y plane; d—the position of the B group model on X-Z plane
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Contour map of the second group model
a—the contour map of A group model's north-component before continuation;b—the contour map of A group model's north-component after continuation 708 m;c—the contour map of A group model's north-component after continuation 4 956 m;d—the contour map of B group model's north-component before continuation;e—the contour map of B group model's north-component after continuation 590 m;f—the contour map of B group model's north-component after continuation 826 m;g—the contour map of B group model's north-component after continuation 4 248 m
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Profile anomalies of the second group model
a—the graph of north-component of A group's profile along X direction;b—the graph of north-component of A group's profile along X direction after continuation 702 m;c—the graph of A group model's after filtering out deep abnormal body;d—the graph of north-component of B group's profile along Y direction;e—the graph of north-component of B group's profile along Y direction after continuation 590 m;f—the graph of north-component of B group's profile along Y direction after continuation 826 m;g—the graph of B group model's after filtering out deep abnormal body
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| 参数 | A组1号 | A组2号 | B组1号 | B组2号 | B组3号 | | 立方体中心点位置 | (2500,2000) | (1500,2000) | (2000, 800) | (2000,1600) | (2000,2600) | | 体积 | 100万m3 | 800万m3 | 12.5万m3 | 100万m3 | 800万m3 | | 磁化强度 | 1 A/m | 1 A/m | | 测点间距 | 118 m | 118 m |
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The geometric and physical parameters of the second group model.
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Continuation value of the second group model
a—the line chart of continuation height and A group model's depth of deep model;b—the line chart of continuation height and B group model's depth of deep model
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The plane of the third group of model
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Contour map of the third group model
a—the contour map of A group model's north-component before continuation;b—the contour map of A group model's north-component after continuation 472 m;c—the contour map of A group model's north-component after continuation 3 540 m;d—the contour map of B group model's north-component before continuation;e—the contour map of B group model's north-component after continuation 826 m;f—the contour map of B group model's north-component after continuation 3 540 m
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Profile anomalies of the third group model
a—the graph of north-component of A group's profile along Y direction;b—the graph of north-component of A group's profile along Y direction after continuation 472 m;c—the graph of A group model's after filtering out deep abnormal body;d—the graph of north-component of B group's profile along Y direction;e—the graph of north-component of B group's profile along Y direction after continuation 826 m;f—the graph of B group model's after filtering out deep abnormal body
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| 参数 | A组1号 | A组2号 | B组1号 | B组2号 | | 立方体中心点位置/m | (2000, 1500) | (2000,2500) | (2000, 1500) | (2000,2500) | | 磁化强度/(A·m-1) | 1 | 2增加到8 | 2增加到10 | 1 | | 模型中心点埋深/m | 500 | 1000 | 500 | 1000 | | 测点间距/m | 118 | 118 |
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The geometric and physical parameters of the third group model
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Continuation value of the third group model
a—the line chart of continuation height and magnetization of A group's deep model;b—the line chart of continuation height and magnetization of B group's shallow model
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The contour map of the north-component
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The contour map of the east-component
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The contour map of the vertical-component
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The contour map of the north-component after 12 meters continuation
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The contour map of the east-component after 12 meters continuation
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The contour map of the vertical-component after 12 meters continuation
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The contour map of the north-component after 210 meters continuation
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The contour map of the east-component after 220 meters continuation
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The contour map of the vertical-component after 250 meters continuation
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