APPLIED ASPECTS OF DIFFERENT FREQUENCY BANDS OF SEISMIC AND WATER ACOUSTIC INVESTIGATIONS ON THE SHELF

Lomonosov Moscow State University, Moscow, Russia

Abstract. The article focuses on the study of the information value of offshore technologies based on generation of acoustic signals in water in a wide frequency band: from one-digit Hz to hundreds of KHz. The initial data for the studies were the experimental materials of marine seismic exploration, seismic acoustics and side-scan sonar, obtained in selected areas of the Russian Arctic shelf. The article analyzes applied methods based on the excitation of controlled sources. Authors differentiate them by dominant frequencies as follows: low frequency (digits and double-digits Hz); mid-frequency (hundreds Hz to the first KHz); high and super high frequency (up to several hundreds KHz), which form the basis of offshore seismic surveys, seismoacoustics and sonar detection. For the first time ever this article incorporates research methods which differ by practical application, but are similar in the physical sense. This fact indicates that there is a need for integrated multi-disciplinary study of complex natural bodies at different levels of detail and development of solution approaches for this problem. Authors believe that crucial scientific breakthroughs are feasible exactly at the joint edge of different disciplines providing exchange of methodologies and toolware applied by cross-experts. The authors also provide examples for each of three frequency intervals. The majority of experimental study results given in the article was obtained with direct involvement of the authors. They present a practical value in the context of development of an integrated geophysical sedimentary mantle study methodology at different levels of detail aimed at creation of unbiased image of the structure and properties of complex shelf bodies.

Keywords: marine seismic surveys, shelf, oil, gas, seismic attributes, seismoacoustics, sonar hydrolocation, benthonic sediments, benthos.

About the authors

AMPILOV Yury P. – Dr. Sci. (Phys. and Math.), professor, Lomonosov Moscow State University. Moscow, Russia. Tel.: +7 (916) 144-99-86. E-mail: ampilovy@gmail.com

TEREKHINA Yana E. – science researcher, Lomonosov Moscow State University. Moscow, Russia. E-mail: ya.terekhina@sc-lmsu.com

TOKAREV Mikhail Yu. – Cand. Sci. (Tech.), deputy dean, Lomonosov Moscow State University. Moscow, Russia. E-mail: mjtokarev@gmail.com

Cite this article as: Ampilov Yu.P., Terekhina Ya.E., Tokarev M.Yu. Applied aspects of different frequency bands of seismic and water acoustic investigations on the shelf, Geofizicheskie Protsessy i Biosfera (Geophysical Processes and Biosphere), 2019, vol. 18, no. 1, pp. 33–49 (in Russian). https://doi.org/10.21455/gpb2019.1-4

English version: Izvestiya, Atmospheric and Oceanic Physics, 2019, vol. 55, iss. 7. ISSN: 0001-4338 (Print), 1555-628X (Online). https://link.springer.com/journal/volumesAndIssues/11485