| 1. | It was compiled from satellite, marine, aeromagnetic and ground magnetic surveys.
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| 2. | It was discovered by a magnetic survey and a gravity survey.
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| 3. | He performed magnetic surveys in Bavaria and northern Germany, France, Spain, and Denmark.
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| 4. | Magnetic surveys are extremely useful in the excavation and exploration of underwater archaeological sites.
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| 5. | In 1901 he began a magnetic survey of South Africa.
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| 6. | He was soon promoted to chief of the department's " Land Magnetic Survey " section.
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| 7. | Techniques used during this investigation include magnetic survey.
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| 8. | He also took part in four eclipse expeditions, and a magnetic survey of the British Isles.
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| 9. | The subsurface structure has been studied from a few outliers, boreholes, xenoliths, and gravity and magnetic surveys.
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| 10. | In terrestrial archaeology, magnetic surveys are typically used for detailed mapping of archaeological features on known archaeological sites.
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