Abstract: The purpose of this paper is to present a system developed for detection andaccurate mapping of ferro-metallic objects buried below the seabed in shallow waters. Thesystem comprises a precise magnetic gradiometer and navigation subsystem, both installedon a non-magnetic catamaran towed by a low-magnetic interfering boat. In addition wepresent the results of a marine survey of a near-shore area in the vicinity of Atlit, a townsituated on the Mediterranean coast of Israel, about 15 km south of Haifa. The primarypurpose of the survey was to search for a Harvard airplane that crashed into the sea in 1960.A magnetic map of the survey area (3.5 km2 on a 0.5 m grid) was created revealing theanomalies at sub-meter accuracy. For each investigated target location a correspondingferro-metallic item was dug out, one of which turned to be very similar to a part of thecrashed airplane. The accuracy of location was confirmed by matching the position of theactual dug artifacts with the magnetic map within a range of ± 1 m, in a water depth of 9 m.
Keywords: Marine survey; Magnetic anomaly; Ferrous Target; Detection; Localization.
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Weiss, E.; Ginzburg, B.; Cohen, T.R.; Zafrir, H.; Alimi, R.; Salomonski, N.; Sharvit, J. High Resolution Marine Magnetic Survey of Shallow Water Littoral Area. Sensors 2007, 7, 1697-1712.
Weiss E, Ginzburg B, Cohen TR, Zafrir H, Alimi R, Salomonski N, Sharvit J. High Resolution Marine Magnetic Survey of Shallow Water Littoral Area. Sensors. 2007; 7(9):1697-1712.
Weiss, Eyal; Ginzburg, Boris; Cohen, Tsuriel R.; Zafrir, Hovav; Alimi, Roger; Salomonski, Nizan; Sharvit, Jacob. 2007. "High Resolution Marine Magnetic Survey of Shallow Water Littoral Area." Sensors 7, no. 9: 1697-1712.