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About the journal
NAUKA I TEKHNOLOGICHESKIE RAZRABOTKI (SCIENCE AND TECHNOLOGICAL DEVELOPMENTS), ISSN: 2079-5165, eISSN: 2410-7948, DOI: 10.21455/std; https://elibrary.ru/title_about.asp?id=32295; http://std.ifz.ru/. The journal was founded in 1992.
AUTONOMOUS GEOHYDROACOUSTIC ICE BUOY
OF NEW GENERATION
A.L. Sobisevich1, D.A. Presnov1, V.M. Agafonov2, L.E. Sobisevich1
1 Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences, Moscow, Russia
2 Moscow Institute of Physics and Technology, Moscow region, Dolgoprudny, Russia
Corresponding author: D.A. Presnov, e-mail: presnov@physics.msu.ru
Highlights
‒ new information-measuring platform and software for seismic equipment have been developed
‒ the group of autonomous geohydroacoustic buoys have been created for ice-class antenna systems
‒ carried out long-term comparative measurements under conditions of geophysical observatory
‒ working capacity confirmed and main parameters of the new device evaluated
‒ the device corresponds to the world analogues in key characteristics
Abstrcat. Results of development, creation of prototypes and full-scale tests of geohydroacoustic measuring buoys of the new generation are presented. They are designed to be used independently as acoustic, hydroacoustic and seismoacoustic measurements in the sea or on land, as well as in the distributed ice-class antenna systems intended for monitoring of the Arctic waters covered with drifting ice. The geohydroacoustic ice buoy represents a complete information-measuring stand-alone device, which includes the use of removable vector hydroacoustic receiving modules (0.01–2.5 kHz) and broadband molecular-electronic receivers (0.03–50 Hz) of a new generation, as well as original tools for digitizing geohydroacoustic information, recording in internal memory and subsequent operational transmission obtained scientific data. The information-measuring system is based on a 24-bit analog-to-digital converter that provides recording of signals in a large dynamic range, which makes it possible to perform measurements with analog broadband sensors in both passive and active modes. A distinctive feature of the geohydroacoustic buoy is the integration in its composition of power elements, this leads to the possibility of reliable autonomous operation of the entire measuring system for several weeks. The results of long laboratory bench tests conducted at the geophysical observatory of the GS RAS in Obninsk showed high technical capabilities of the new generation of geohydroacoustic buoys. Comparative analysis in the measurement of signals caused by microseismic noise and teleseismic earthquakes, confirmed that the proposed measuring instrument is not inferior in its key indicators to the world analogues.
Keywords: seismometer, buoy, molecular-electronic sensor, ADC, geohydroacoustic wave field, information-measuring system, ice class antenna.
Cite this article as: Sobisevich A.L., Presnov D.A., Agafonov V.M., Sobisevich L.E. Autonomous geohydroacoustic ice buoy of new generation, Nauka i Tekhnologicheskie Razrabotki (Science and Technological Developments), 2018, vol. 97, no. 1, pp. 25–34. [Special issue “Precise Geophysical Monitoring of Natural Hazards. Part 1. Instruments and Technologies”]. [in Russian]. DOI: 10.21455/std2018.1-3
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About the authors
SOBISEVICH Alexey Leonidovich – Doctor of Physical and Mathematical Sciences, Corresponding Member of the Russian Academy of Sciences, Head of the Laboratory, Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences. 123242, Moscow, ul. Bolshaya Gruzinskaya 10, stroenie 1. Tel.: (499) 254-30-60. E-mail: alex@ifz.ru
PRESNOV Dmitry Alexandrovich – Candidate of Physical and Mathematical Sciences, Research Associate, Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences. 123242, Moscow, ul. Bolshaya Gruzinskaya 10, stroenie 1. Tel.: (499) 254-30-60. E-mail: presnov@physics.msu.ru
AGAFONOV Vadim Mikhailovich – Candidate of Physical and Mathematical Sciences, Associate Professor, Department of Vacuum Electronics, Moscow Institute of Physics and Technology. 141701, Moscow Region, Dolgoprudny, Institutskii per. 9. E-mail: agvadim@yandex.ru
SOBISEVICH Leonid Evgenievich – Doctor of Technical Sciences, Chief researcher, Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences. 123242, Moscow, ul. Bolshaya Gruzinskaya 10, stroenie 1. Tel.: (499) 254-30-60. E-mail: sobis@ifz.ru