FIELD: instrument making.
SUBSTANCE: set of invention relates to sensors used for seismic data survey. These inventions cover seismic sensor unit incorporating multiple sensors to be mounted at ground-air boundary. Note here that said unit comprises case filled with fluid, solid state connecting device arranged at case bottom part, hydrophone and one or several geophones or accelerometers fitted in said case and directly coupled with fluid. This allows detection of fluid displacement and pressure variation therein caused by pressure waves in fluid with no shear wave effects. Besides, they allow removal of surface waves effects at location of sensors to rule out the need in removal of effects by data processing. Plus increased volume of data at decreased quantity of sensors resulted from configuration of sensors is not exposed to shear wave effects.
EFFECT: decoupling configuration ensures damping of displacement of case 101 in seismic frequency band of 1 Hz to 200 Hz.
30 cl, 28 dwg
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