Preliminary results of integrated oceanographic and geophysical observations in the profile of Peter the Great Bay – Tsushima Strait (the Sea of Japan, October 2019). A.А. LEGKODIMOV, M.A. BOVSUN, D.A. SHVALOV, G.I. MISHUKOVA, M.V. IVANOV, N.A. LIPINSKAYA
Keywords:
methane, carbon dioxide, boundary layer (water-atmosphere), Sea of Japan, gravimetry, hydroacoustics, fluorescence, mercuryAbstract
Preliminary results of integrated oceanographic and geophysical observations in the profile of Peter the Great Bay – Tsushima Strait (the Sea of Japan, October 2019). A.А. LEGKODIMOV1, M.A. BOVSUN1,2, D.A. SHVALOV1, G.I. MISHUKOVA1, M.V. IVANOV1, N.A. LIPINSKAYA1, M.V. SHAPOVALOVA1 (1V.I. Il’ichev Pacific Oceanological Institute, FEB RAS, Vladivostok, 2Far Eastern Federal University, Vladivostok), A.G. SHIYANOV3 (3Ural State Mining University, Ekaterinburg).
The study of the ocean by complex methods using a flow system and atmospheric air is currently one of the universal methods of obtaining express results (such as gravimetric observations, fluorescence intensity measurements, methane and chlorophyll-a concentrations in near-surface water, mercury and various gases in open air) directly during the vessel’s sailing. The studies were conducted on the Vladivostok – Nha Trang traverse during October 27–29, 2019 in the Sea of Japan as a part of the LV88 voyage aboard the R/V “Academic M.A. Lavrent’yev”. According to the results of the study, abnormal zones of concentrations of methane (8.3 nM/l), carbon dioxide (2.3 ppm) and mercury (4 ng/m3) were identified. We have also noted gravitation anomalies in the Korean Strait.
