Hydrosphere Pressure Variations Research Articles

Mobile laser meter of hydrosphere pressure variations

A device for measuring hydrosphere pressure variations at depths of down to 1000 m in the frequency range of 0–1000 Hz with an accuracy of 10–30 mPa is described.

Interaction of low-frequency hydroacoustic waves with wind sea waves

On the basis of experimental data on hydrospheric pressure variations, obtained with the use of a laser hydrophone and laser gauge of hydrospheric pressure variations, while hydroacoustic radiators were running, generating hydroacoustic waves at frequencies of about 32, 245, and 421 Hz in water, it was established that there is no modulating action of wind sea waves on the propagating hydroacoustic signals along the “radiator-receiver” trace, within the limits of experimental error and the processing methods used.

Super-low-frequency laser instrument for measuring hydrosphere pressure variations

The operating principle and specifications of a laser meter for measuring hydrosphere pressure variations are described in this article. The meter was designed to measure the hydrosphere pressure variations to a depth of 500 m within the frequency range of 0–1000 Hz at the level of background oscillations. Some results obtained using the apparatus under consideration when recording sea oscillations and waves of natural and artificial origin are presented.