11. The Nimrod was equipped with a Magnetic Anomaly Detector ( MAD ) tail boom. 12. A retractable magnetic anomaly detector ( MAD ) Boom is fitted in the tail. 13. True seafloor spreading initiates with the Vine-Matthews-type magnetic anomaly stripes. 14. Unlike the southern highlands, magnetic anomalies in the northern plains are sparse and weak. 15. The ASW helicopters have surface search radar, dipping sonar, sonobuoys, and magnetic anomaly detectors. 16. A large magnetic anomaly consistent with the fired hearth of a blast furnace was located. 17. The magnetic anomalies in connection with the impact crater might be related to the phenomenon. 18. Gradiometers enhance shallow magnetic anomalies and are thus good for archaeological and site investigation work. 19. Several flights were conducted over the suspected area of the ship, searching for magnetic anomalies . 20. The nearby, but less known Temagami Magnetic Anomaly has striking similarities to the Sudbury Basin.
