Flux of low salinity water from Aniva Bay (Sakhalin Island) to the southern Okhotsk Sea

Abstract

1 2In this study, we examined the relationship between the low salinity water in the shelf region of the 3 southern Okhotsk Sea which was seasonally sampled (0-200 m), and fluxes of low salinity water 4 from Aniva Bay. To express the source of freshwater mixing in the surface layer, we applied 5 normalized total alkalinity (NTA) and stable isotopes of seawater as chemical tracers. NTA-S 6 diagrams indicate that NTA of low salinity water in the upper 30 m layer just off the Soya Warm 7

Spatial distribution of the protist community in the southern part of the Okhotsk Sea off Hokkaido during summer

“…Since the warm SWC flows as a submerged current near the bottom during spring (Aota 1975), the bottom temperature increases to the optimal temperature for germination of A. tamarense cysts (5-21 °C) (Anderson 1998;Shimada 2017). Moreover, A. tamarense blooms near the CWB originate from Aniva Bay on southern Sakhalin Island (Orlova et al 2004) and are transported along the front with the SWC (Oguma et al 2011). Although we did not identify Alexandrium spp.…”