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Open AccessArticle

Supersensitive Detector of Hydrosphere Pressure Variations

V.I. Il’ichev Pacific Oceanological Institute FEB RAS, 690041 Vladivostok, Russia
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Sensors 2020, 20(23), 6998; https://doi.org/10.3390/s20236998
Received: 7 October 2020 / Revised: 24 November 2020 / Accepted: 3 December 2020 / Published: 7 December 2020
(This article belongs to the Special Issue Sensors and Methods for Dynamic Measurement)
This paper presents an instrument based on an equal-arm Michelson interferometer and a frequency-stabilized helium-neon laser. It is designed to record hydrosphere pressure variations in the frequency range from 0 (conventionally) to 1000 Hz, with accuracy of 0.24 mPa at sea depths of up to 50 m. The operating range of the instrument can be increased by order of magnitude by improving the registration system speed, and accuracy can be enhanced by using larger diameter membranes and/or their smaller thickness. The paper demonstrates some experimental results obtained on the supersensitive detector of hydrosphere pressure variations, confirming its high performance in the infrasonic and sonic ranges. View Full-Text
Keywords: supersensitive detector; Michelson interferometer; frequency-stabilized helium-neon laser; wind wave; infra-gravity waves; laser strainmeter; low-frequency hydroacoustic emitter supersensitive detector; Michelson interferometer; frequency-stabilized helium-neon laser; wind wave; infra-gravity waves; laser strainmeter; low-frequency hydroacoustic emitter
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MDPI and ACS Style

Dolgikh, G.; Budrin, S.; Dolgikh, S.; Plotnikov, A. Supersensitive Detector of Hydrosphere Pressure Variations. Sensors 2020, 20, 6998. https://doi.org/10.3390/s20236998

AMA Style

Dolgikh G, Budrin S, Dolgikh S, Plotnikov A. Supersensitive Detector of Hydrosphere Pressure Variations. Sensors. 2020; 20(23):6998. https://doi.org/10.3390/s20236998

Chicago/Turabian Style

Dolgikh, Grigory; Budrin, Sergey; Dolgikh, Stanislav; Plotnikov, Aleksandr. 2020. "Supersensitive Detector of Hydrosphere Pressure Variations" Sensors 20, no. 23: 6998. https://doi.org/10.3390/s20236998

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