PARTICULATE ORGANIC CARBON FLUXES ESTIMATED FROM 234TH DEFICIENCY IN WINTERS AND SPRINGS IN THE NORTHWESTERN NORTH PACIFIC

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dc.contributor.author Kawakami H.
dc.contributor.author Yang Y.-H.
dc.contributor.author Kusakabe M.
dc.contributor.author Honda M.C.
dc.date.accessioned 2022-08-27T05:01:05Z
dc.date.available 2022-08-27T05:01:05Z
dc.date.issued 2004
dc.identifier https://www.elibrary.ru/item.asp?id=14407672
dc.identifier.citation Geochemical Journal, 2004, 38, 6, 581-592
dc.identifier.issn 0016-7002
dc.identifier.uri https://repository.geologyscience.ru/handle/123456789/38587
dc.description.abstract Activities of particulate and dissolved 234Th and concentrations of particulate organic carbon (POC) were measured in the northwestern North Pacific in winters and springs. The export fluxes of POC from surface waters were estimated by using 234Th as a tracer. The POC fluxes in winter showed a wide variation (20-190 mg-C m -2d-1) and were higher in the western region than in the eastern region. The influence of the Oyashio Current and the supply of substances from the continent to the study area also appeared to be higher in the western region. Therefore, the horizontal distribution of POC fluxes in winter was influenced by continental materials. In the spring bloom, the fluxes of POC were much higher (up to 520 mg-C m-2d-l), as were the e-ratios (up to 70%). In the northwestern North Pacific, the efficiencies of export of POC from the euphotic zone were higher than in other areas of the world ocean. The increase in POC fluxes in spring was considered to depend not only on the increased abundance of phytoplankton, but also on the transition of phytoplankton species, as evidenced by the relationship between 234Th adsorption rates and the concentrations of POC.
dc.subject 234Th
dc.subject POC
dc.subject PON
dc.subject export production
dc.subject northwestern North Pacific
dc.title PARTICULATE ORGANIC CARBON FLUXES ESTIMATED FROM 234TH DEFICIENCY IN WINTERS AND SPRINGS IN THE NORTHWESTERN NORTH PACIFIC
dc.type Статья


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