METHOD FOR PARAMETRIC RECEPTION OF HYDROPHYSICAL AND GEOPHYSICAL WAVES IN MARINE ENVIRONMENT Russian patent published in 2014 - IPC G01V1/00 

FIELD: physics, hydrophysics.

SUBSTANCE: method for parametric reception of hydrophysical and geophysical waves in a marine environment is characterised by that, in addition to scanning the environment with low frequency hydroacoustic signals, it also includes infra-low frequency pumping of the sea bottom along the direction of parametric antennae which radiate from the centre of the investigated water area; furthermore, a receiving hydroacoustic transducer is formed from two vertically spaced apart receivers, mounted on a mobile carrier which moves on the boundary of the investigated water area, wherein the low frequency hydroacoustic signals are generated by two vertically spaced apart forward-scattering parametric antennae, wherein during movement on the perimeter of the water body, the direction of the maximum manifestation of the measured information waves is determined; further, the receiving unit is moved in the said directions towards the location of the radiating transducers with a constant velocity minimally possible for the carrier or with given stoppage intervals, wherein the method also includes measuring and specifying the location of sources of the maximum manifestation of information waves, the length thereof and space-time characteristics thereof, and based thereon, identifying the measured waves, identification thereof as water hydrophysical or bottom geophysical, e.g., hydrocarbon or seismic ones; furthermore, upon detecting geophysical waves and selection of spectral characteristics thereof, the latter are compared with generalised reference spectra and the identity of the measured information waves to specific types of hydrocarbon accumulations is determined or are identified as earthquake precursors.

EFFECT: invention reduces the time and equipment costs on investigating a water area with search purposes for hydrocarbon deposits and enabling detection of seismic disturbances of the medium of earthquake precursors.

7 cl, 10 dwg