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Supersensitive Detector of Hydrosphere Pressure Variations.
Grigory Dolgikh1, Sergey Budrin1, Stanislav Dolgikh1
1V.I. Il'ichev Pacific Oceanological Institute FEB RAS, 690041 Vladivostok, Russia.
Sensors (Basel, Switzerland)
|December 10, 2020
Summary
This study introduces a novel instrument for measuring hydrosphere pressure variations. The device achieves high accuracy, offering valuable data for oceanographic and geophysical research.
Area of Science:
- Geophysics
- Oceanography
- Instrumentation
Background:
- Accurate measurement of hydrosphere pressure variations is crucial for understanding oceanic processes and seismic activity.
- Existing instruments may have limitations in sensitivity, accuracy, or operating range for certain applications.
Purpose of the Study:
- To present a new instrument for recording hydrosphere pressure variations.
- To detail the instrument's design, performance, and potential for enhanced capabilities.
Main Methods:
- Utilizes an equal-arm Michelson interferometer.
- Employs a frequency-stabilized helium-neon laser for precise measurements.
- Incorporates a supersensitive detector for infrasonic and sonic frequency ranges.
Main Results:
- The instrument records hydrosphere pressure variations from 0 to 1000 Hz.
- Achieves an accuracy of 0.24 mPa at sea depths up to 50 m.
- Experimental results confirm high performance in infrasonic and sonic ranges.
Conclusions:
- The developed instrument demonstrates high performance for detecting subtle pressure changes in the hydrosphere.
- Potential exists for expanding the operating range and enhancing accuracy through system improvements.
- This technology offers a valuable tool for scientific research in oceanography and geophysics.
Keywords:
Michelson interferometerfrequency-stabilized helium-neon laserinfra-gravity waveslaser strainmeterlow-frequency hydroacoustic emittersupersensitive detectorwind waveMore Related Videos
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