AUTOMATED INTERPRETATION OF MAGNETIC ANOMALIES USING THE VERTICAL PRISM MODEL

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Abstract
The vertical prism model is frequently used for interpretation of magnetic anomalies. Such interpretations have been carried out previously by manual comparison of observed anomalies to atlases of prism model anomalies. An automated technique for computerized interpretation of magnetic anomalies using the three‐dimensional vertical prism model was applied to model data and two magnetic anomalies for intrusive bodies. The vertical‐sided, three‐dimensional prism model characteristically yields a range of models of near equally good fit to an anomaly; these prisms may have considerable variation in physical parameters. The results indicate the necessity for a computerized prism model interpretation technique which can adequately consider the range of possibilities for interpretation.

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