MariMag LG is a modern marine longitudinal gradiometer operating on Overhauser effect designed to perform geophysical, geotechnical and exploration works both in shallow and deep water. The device allows to measure the magnetic field gradient with high accuracy using two independent sensors. Each gradiometer gondola can be used as a separate towed magnetometer. Gradiometer consists of two magnetometer-gondolas and an inter-gondola cable of any length. Long inter-gondola sections (greater than 100 m) are suitable for regional and geological research, medium ones (from 10 to 100 m) - for solution of engineering problems and searching for large artificial objects. Sections less than 10 m are commonly used for seabed surveys, UXO detection, archaeological surveys and pipeline tracing.
A built-in pressure sensor, digital compass and accelerometer allow real-time gondola position calculation, while an optional altimeter provides towing depth in term of distance above seabed. Three versions of gondola ensure safe towing of the device at depths up to 300, 1000 or 3000 m.
Main features:
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High sensitivity and accuracy
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Built-in compass, accelerometer, leak detector, pressure and humidity sensors
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Optional altimeter
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Data collection on a recorder or PC
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Floating or sinking cable