BOTTOM STATION Russian patent published in 2013 - IPC G01V11/00 G01V1/38 G01V3/00 

FIELD: physics.

SUBSTANCE: bottom station consists of a tough case (1) in form of a sphere. In the bottom part, the case (1) is linked to a ballast (2) by a disconnector (3) with strops (4). Outside the case there is a seismic sensor (7) and a module of electromagnetic sensors which consists of two magnetic field inductive sensors (5) and two electric field sensors (6). In the top part of the case (1) there is a buoyancy module (9) in a hollow space (8). The case houses a power supply (10), sensor (5, 6, 7) signal recorders (11, 12, 13), a device for storing the recorded information (14), a hydroacoustic communication channel (15), a control unit (17), a logic processing unit (18), a sensor for spatial orientation and determining coordinates (19). The hydroacoustic communication channel (15) is connected to an antenna (16). The magnetic field inductive sensors (5) and electric field sensors (6) have a detection range of 0.0001-300 Hz and a detection period of 0.033-10000 s. The seismic sensor (7) enables to measure the vertical component of the seismic field in the 0.5-40 Hz range.

EFFECT: high reliability of detecting magnetotelluric field signals.

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