L07-page5 - A anomaly totalfield F F F ˆ • = r F A total...

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5 Total Field Anomaly • Many instruments measure only the total field • If F earth >>F A , then the total field anomaly is approximately the component of F A in the direction of F earth earth
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Unformatted text preview: A anomaly totalfield F F F ˆ • = r F A total = 5 nT F eUndisturbed = 55,000 nT F eUndisturbed = 55,005 nT F A =12 nT Monopole Field F A F E ∆ F A F E F At F At...
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