L06-page11 - Advantages Dont need to be corrected for...

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11 Alkali Vapor Magnetometer •Advantages • Don’t have to align ‘bottle’ with field • Very rapid, almost continuous •Disadvantages • Can’t measure vector field •Measurement accuracy : • 0.01 to 1nT Magnetic Gradiometer • Takes differences between two measurements that are made close together • Divides result by distance between sensors
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Unformatted text preview: Advantages Dont need to be corrected for diurnal variation Provides high resolution of near surface feature Disadvantages Wont measure large scale features Essentially automatic removal of regional Lower signal-to-noise ratio...
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