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  • 1
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    Microplastics and nanoplastics in the marine-atmosphere environment (2022)
    Nature Research
    Details
    Publication Date: 2024-02-07
    Description: The discovery of atmospheric micro(nano)plastic transport and ocean–atmosphere exchange points to a highly complex marine plastic cycle, with negative implications for human and ecosystem health. Yet, observations are currently limited. In this Perspective, we quantify the processes and fluxes of the marine-atmospheric micro(nano)plastic cycle, with the aim of highlighting the remaining unknowns in atmospheric micro(nano)plastic transport. Between 0.013 and 25 million metric tons per year of micro(nano)plastics are potentially being transported within the marine atmosphere and deposited in the oceans. However, the high uncertainty in these marine-atmospheric fluxes is related to data limitations and a lack of study intercomparability. To address the uncertainties and remaining knowledge gaps in the marine-atmospheric micro(nano)plastic cycle, we propose a future global marine-atmospheric micro(nano)plastic observation strategy, incorporating novel sampling methods and the creation of a comparable, harmonized and global data set. Together with long-term observations and intensive investigations, this strategy will help to define the trends in marine-atmospheric pollution and any responses to future policy and management actions.
    Type: Article , PeerReviewed
    Format: other
    Format: text
    Format: text
    Location Call Number Limitation Availability
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 2
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    Radionuclide and total organic carbon contents, sedimentation, mass accumulation and organic carbon deposition rates in Atacama, Kuril-Kamchatka, Kermadec and Mariana Trench systems (2022)
    PANGAEA
    Details
    Publication Date: 2024-07-01
    Description: To investigate sedimentation processes in hadal trenches, sediment cores were collected from Atacama, Kuril-Kamchatka, Kermadec and Mariana Trench regions. We collected 9 sediment cores from Atacama Trench (R/V Sonne SO261; from 2/Mar to 2/Apr/2018), 4 sediment cores from Kuril-Kamchatka Trench (R/V Sonne SO250; from 16/Aug to 26/Sep/2016), 3 sediment cores from Kermadec Trench (R/V Tangaroa; TAN1711 from 24/Nov to 14/Dec/2017), and 2 sediment cores from Mariana Trench (R/V Yokosuka; YK10-11 from 20/Nov to 4/Dec/2010), respectively. Using with these cores, we measured radionuclides (210Pb, 214Pb and 137Cs) and total organic carbon (TOC) profiles to calculate sedimentation, mass accumulation and TOC deposition rates. This dataset contains sapling site locations, 210Pb (and excess 210Pb), 214Pb and 137Cs concentrations and TOC contents of these cores. 14C ages of organic carbon are also measured for Mariana Trench sediment cores. Sedimentation, mass accumulation and organic carbon deposition rates calculated with excess 210Pb profiles and the surface TOC contents are also provided. Datasets about mass accumulation rates from continental shelf to the hadal environments and burial efficiency of organic carbon are compiled from our data and the previously published papers (references are shown in each file). These data are used for preparing figures, tables and the discussions in Oguri et al. (2022).
    Keywords: B_LANDER; BC; Bottom lander; Box corer; Documentation file; File content; focusing factor; GeoB22901-1, Site 1; GeoB22903-1, Site 5; GeoB22904-1, Site 4; GeoB22905-1, Site 3; GeoB22906-1, Site 7; GeoB22907-1, Site 2; GeoB22908-1, Site 10; GeoB22909-2, Site 9; Hadal trench; Kermadec Trench; KuramBio II; Mariana Trench; mass accumulation rate; mass-wasting event; MUC; MultiCorer; North Pacific Ocean; Office Open XML Workbook; organic carbon deposition rate; Radionuclides; Reference/source; Site 6; SO250; SO250_104-1; SO250_16-1; SO250_53-1; SO250_74-1; SO261; SO261_105-1; SO261_116-1; SO261_21-1; SO261_35-1; SO261_48-1; SO261_63-1; SO261_75-1; SO261_8-2; SO261_92-1; Sonne_2; TAN1711; TAN1711_K4; TAN1711_K6; TAN1711_K7; Tangaroa; YK10-11; YK10-11_M1; YK10-11_M2; Yokosuka
    Type: Dataset
    Format: text/tab-separated-values, 29 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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