Submesoscale eddies in Peter the Great Bay of the Japan/East Sea in winter SCIE SCOPUS

DC Field Value Language Fayman, Pavel - Ostrovskii, Alexander - Lobanov, Vyacheslav - Park, Jae-Hun - Park, Young-Gyu - Sergeev, Aleksandr - 2020-04-16T08:15:14Z - 2020-04-16T08:15:14Z - 2020-02-19 - 2019-04 -
dc.identifier.issn 1616-7341 -
dc.identifier.uri -
dc.description.abstract Cold-core (T<0 degrees C) domes of dense water sigma>27.24kg/m(3) were observed in the near-bottom layer at the shelf break in Peter the Great Bay (PGB) of the Japan/East Sea in March 2010. The anomalously cold water was 0.4ml/l richer in oxygen than was the surrounding water, and it contained more suspended particles. The observations were carried out by using a moored automatic mobile Aqualog profiler. Profiling occurred as frequent as every hour, allowing us to obtain data with high temporal resolution. The Aqualog profiler delivered vertical profiles of the ocean current velocity, acoustic backscatter at 2MHz, temperature, and salinity between the depths of 20 and 105m. Other oceanographic instruments were mounted at fixed depths on the mooring line to measure current velocity, temperature, conductivity, dissolved oxygen, chlorophyll-a fluorescence, and turbidity. Complementary data included ship-borne CTD casts and satellite-borne imagery and scatterometry as well as coastal weather station records. The Regional Ocean Modeling System (ROMS) was employed to study the origin and evolution of the cold water. The model simulated the ocean dynamics at a 600-m horizontal resolution in PGB from 2009 to 2010. The model was forced by the surface momentum, heat and fresh water fluxes of the NCEP-DOE Reanalysis 2. The lateral boundary condition of the model was obtained from nesting into a Japan Coastal Ocean Predictability Experiment model data set. According to the ROMS simulation, the circulation in Ussuri Bay in the northeastern bay of PGB was anticyclonic in February-March 2010. The submesoscale cyclonic vortices generated around the anticyclonic gyre. The submesoscale cyclones tended to move southward out of the bay, and they transported the anomalously cold water towards the outer shelf. As a result, the cold water anomalies were often observed to persist for as long as 2days near 42.5 degrees N, 132 degrees E. Lagrangian analysis confirmed that this cold water observed by the Aqualog profiler originated in Ussuri Bay. The model simulation showed that the submesoscale cyclonic eddies played a specific role in supplying the densest water from the northern part of PGB to the outer shelf, where the dense water was then entrained by the mesoscale eddies in the Primorye Current zone and could cascade down the continental slope into the deep northern basin of the sea. This transport of the densest water by the submesoscale eddies was estimated to be 5-1010(-3)Sv in February-March 2010. -
dc.description.uri 1 -
dc.language English -
dc.subject WATER -
dc.subject VARIABILITY -
dc.subject CONVECTION -
dc.subject SYSTEM -
dc.title Submesoscale eddies in Peter the Great Bay of the Japan/East Sea in winter -
dc.type Article -
dc.citation.endPage 462 -
dc.citation.startPage 443 -
dc.citation.title OCEAN DYNAMICS -
dc.citation.volume 69 -
dc.citation.number 4 -
dc.identifier.bibliographicCitation OCEAN DYNAMICS, v.69, no.4, pp.443 - 462 -
dc.identifier.doi 10.1007/s10236-019-01252-8 -
dc.identifier.scopusid 2-s2.0-85061601752 -
dc.identifier.wosid 000463009100003 -
dc.type.docType Article -
dc.description.journalClass 1 -
dc.subject.keywordPlus SURFACE TEMPERATURE -
dc.subject.keywordPlus WATER -
dc.subject.keywordPlus VARIABILITY -
dc.subject.keywordPlus CONVECTION -
dc.subject.keywordPlus SYSTEM -
dc.subject.keywordAuthor Moored automatic mobile profiler -
dc.subject.keywordAuthor Regional ocean modeling system -
dc.subject.keywordAuthor Submesoscale eddy -
dc.subject.keywordAuthor Water particle pathways -
dc.subject.keywordAuthor Dense water production rate -
dc.subject.keywordAuthor Peter the Great Bay -
dc.subject.keywordAuthor Japan -
dc.subject.keywordAuthor East Sea -
dc.relation.journalWebOfScienceCategory Oceanography -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.relation.journalResearchArea Oceanography -
Appears in Collections:
Marine Environmental & Climate Research Division > Ocean Circulation Research Center > 1. Journal Articles
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