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Science Newsletter of the Faculty fo Physics
This is a new bulletin, which, as we hope, will bring fresh, updated information on scientific news, research activities, and related events in the life of our department to our staff members, undegraduate and graduate students, postdocs, collaborators and partners. We greatly hope that this Science Newsletter will help us to find new partners in research and shorten the way from fundamental research to applications and innovations, from our fundamental discoveries to their successful implementations in not too distant future.
XIV National School-Seminar "Wave phenomena in inhomogeneous media"
The conference papers from the School-Seminar «Waves-2014» will be submitted for publishing in the Memoirs of the Faculty of Physics journal.
| Journals » Memoirs of the Faculty of Physics » Issues » 2016 » # 6 |
Experimental study of geo-hydroacoustic waves in an ice covered shallow sea
D. A. Presnov$^1$, R.A.Zhostkov$^1$, A.S. Shurup$^{1,2}$, A.L. Sobisevich$^1$, D.V. Likhodeev$^1$, D.E. Beloborodov$^1$, F.V. Perederin$^1$
$^1$The Shmidt Institute of Physics of the Earth of Russian Academy of Sciences. Bolshaya Gruzinskaya str., 10-1, Moscow 123995, Russia$^2$Department of acoustics, Faculty of Physics, Lomonosov Moscow State University. Moscow 119991, Russia
One of the information sources about physical properties of the inhomogeneous medium is a dispersion of surface wave velocity, which amplitude decays exponentially at a depth about the wavelength. In the case of shallow water for the characteristics of the deep bottom recovery the registration of the «bottom» wave propagating along the boundary «elastic bottom–water layer» is required. For this wave registration usually ocean bottom systems are used. The experimental data are accumulated in the memory card that is removed after the measurement with the sensor, or data is transmitted through the satellite transceiver to surface communication channels. In the case of sea covered with ice use of these systems significantly hampered. This paper, based on experimental data shows that the time-frequency analysis of the cross-correlation function of signals, recorded by wideband sensors located on the surface of the ice, allows you to select in the received signal information on the propagation time of the waves between the bottom sensors. The obtained result allows speaking about the possibility of constructing of a sounding of deep inhomogeneous structures in the presence of ice cover with significantly reduced requirements on the practical implementation of this approach.
| URL: | http://uzmu.phys.sunmarket.com/abstract/2016/6/166704 |
| PACS: | 43.20.+g General linear acoustics |
| UDC: | |
| Цитата: | Д.А. Преснов, Р.А. Жостков, А.С. Шуруп, А.Л. Собисевич, Д.В. Лиходеев, Д. Е. Белобородов, Ф.В. Передерин. Экспериментальное исследование гео-гидроакустических волн в условиях мелкого моря, покрытого льдом // Учен. зап. физ. фак-та Моск. ун-та. 2016. № 6. 166704 |