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Sensors 2007, 7(9), 1697-1712; doi:10.3390/s7091697
Article

High Resolution Marine Magnetic Survey of Shallow Water Littoral Area

1,* , 1, 1, 1, 1, 1 and 2
1 R&D Integrated System Section, Propulsion Division, Soreq NRC, Yavne 81800, Israel 2 Israel Antiquities Authority, Marine Archaeology Unit, P.O. box 272, Or-Akiva 30600, Israel
* Author to whom correspondence should be addressed.
Received: 29 August 2007 / Accepted: 3 September 2007 / Published: 3 September 2007
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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. Marine survey; Magnetic anomaly; Ferrous Target; Detection; Localization.
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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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.

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