Pavel Yu. Semkin Birth Date: June 17, 1988 Nationality: Russian Federation Research Interest: Marine chemistry DEGREES: High School, 2005, Birobidjan, Khabarovsky Kray Engineer in Oceanography, 2010, Far-Eastern State Univ., Vladivostok PhD, 2018, POI FEB RAS, Vladivostok, title: Hypoxia of the estuaries of the Peter the Great Bay CURRENT PROJECT of the Russian Scientific Foundation: The effect of tidal pumping and variations of the water regime on the discharge of groundwater and flows of substances in the surface-subterranean estuary system of the Razdolnaya River (Amur Bay, Sea of Japan) The carbonate system of estuarine waters, carbon dioxide fluxes, hypoxia of estuary, and the fluxes of nutrients to estuaries are the main interests of my research. I also study water dynamics in estuaries, combining classical oceanographic surveys and mooring stations with the geochemical tracers such as radionuclides of radium and radon, stable isotopes of oxygen and hydrogen, and macrocomponents of water. In this project I will be work supervisor on the hydrological work (sampling of water, soil, sounding of the water column), analysis of hydrochemical data, and writing papers.