This system is designed for geology imaging as well as for buried object detection...
This system is suitable to image the subsurface geology as well as to detect buried objects...
This system is adapted to detect all buried objects within a 5 m swath...
This system is suitable for mobile measurements of the ambient electromagnetic fields...
This system is adapted to realize fixed and precise measurements of the ambient electromagnetic fields...
The MAPPEM system is a towed marine resistivity imaging system. It is towed near the seafloor at a speed of about 3-4 knots to record the electrical resistivity of the substratum.
The whole device includes a main tow fish containing the acquisition and control electronics, a secondary tow fish with a current injection electrode, and a cable equipped with potential difference sensors. Data is transmitted in real time to the crew on board. The recorded data includes potential differences, converted into apparent resistivity and then inverted into the true resistivity model of the subsoil.
Advantages
Technical characteristics
The MAPPEM-S system is a towed marine resistivity imaging system at a speed of about 3-4 knots to record the electrical resistivity of the substratum. It is deployed in very shallow waters.
It has the same capabilities and precision than the original MAPPEM system but in a lighter packaging and implementation, to be used with small draft vessels.
Advantages
Technical characteristics
The MAPPEM-3D system is an electromagnetic object detection and localization system towed by a ship near the seabottom at a speed of about 3-4 knots. This system is dedicated to object detection, from UXOs, cables pipelines, archeology, etc.
The whole device includes a main tow fish containing the acquisition and control electronics, a secondary tow fish with a current injection electrode, and a sensor array equipped with potential difference sensors. Data is transmitted in real time to the crew on board. The recorded data are processed in real time with a simplified proprietary algorithm (“BODIES-RT”).
Advantages
Technical characteristics
The PASSEM system is a unique system for the measurement of the marine ambient electromagnetic fields in the marine environment. It is towed by a ship at a speed of about 3-4 knots. The system includes high precision 3 axis magnetic sensor and electric dipoles to precisely measure the local electric fields. Data is transferred in real-time onboard the vessel.
Advantages
Technical characteristics
The STATEM system is an autonomous seafloor electromagnetic measurement station. This instrument is used to evaluate the electromagnetic noise generated by anthropogenic infrastructures and during marine magnetotelluric studies in coastal areas.
With a small size, the STATEM is equipped with state-of-the-art 3-axis fluxgate magnetic sensor and two perpendicular electric dipoles. This instrument records 5 components of the electromagnetic fields at 512 Hz for up to about 1 month.
Advantages
Technical characteristics
