1. Geophysical Center, Russian Academy of Sciences , Moscow, Russia
2. Maykop State Technological University , Maykop, Russia
3. P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences , Moscow, Russia
4. S.Yu. Witte Moscow University , Moscow, Russia
5. Marine Hydrophysical Institute, Russian Academy of Sciences , Sevastopol, Russia
6. Institute of Ecology, Abkhazian Academy of Sciences , Sukhumi, Republic of Abkhazia