Natural and artificial radionuclides and organic geochemistry data of sediment core GeoB17402-1 and GeoB17409-1
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| Autores principales: | , , , , , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
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PANGAEA
2017
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| _version_ | 1867169514727145472 |
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| author | Pittauer, Daniela Roos, Per Qiao, Jixin Geibert, Walter Elvert, Marcus Fischer, Helmut W |
| author_facet | Pittauer, Daniela Roos, Per Qiao, Jixin Geibert, Walter Elvert, Marcus Fischer, Helmut W |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Radionuclide concentrations were studied in sediment cores taken at the continental slope of the Philippine Sea off Mindanao Island in the equatorial Western Pacific. High resolution deposition records of anthropogenic radionuclides were collected at this site. Excess 210Pb together with excess 228Th and anthropogenic radionuclides provided information about accumulation rates. Concentrations of Am and Pu isotopes were detected by gamma spectrometry, alpha spectrometry and ICP-MS. The Pu ratios indicate a high portion (minimum of 60%) of Pu from the Pacific Proving Grounds (PPG). This implies that the transport of PPG derived plutonium with the Mindanao Current southward is similarly effective as the previously known transport towards the north with the Kuroshio Current. The record is compared to other studies from northwest Pacific marginal seas and Lombok basin in the Indonesian Archipelago. The sediment core top at site GeoB17409 was found to contain a 6 cm thick layer dominated by terrestrial organic matter, which was interpreted as a result of the 2012 Typhoon Pablo-related fast deposition. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_877438 |
| institution | PANGAEA |
| language | en |
| publishDate | 2017 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Natural and artificial radionuclides and organic geochemistry data of sediment core GeoB17402-1 and GeoB17409-1 Pittauer, Daniela Roos, Per Qiao, Jixin Geibert, Walter Elvert, Marcus Fischer, Helmut W Center for Marine Environmental Sciences; MARUM Radionuclide concentrations were studied in sediment cores taken at the continental slope of the Philippine Sea off Mindanao Island in the equatorial Western Pacific. High resolution deposition records of anthropogenic radionuclides were collected at this site. Excess 210Pb together with excess 228Th and anthropogenic radionuclides provided information about accumulation rates. Concentrations of Am and Pu isotopes were detected by gamma spectrometry, alpha spectrometry and ICP-MS. The Pu ratios indicate a high portion (minimum of 60%) of Pu from the Pacific Proving Grounds (PPG). This implies that the transport of PPG derived plutonium with the Mindanao Current southward is similarly effective as the previously known transport towards the north with the Kuroshio Current. The record is compared to other studies from northwest Pacific marginal seas and Lombok basin in the Indonesian Archipelago. The sediment core top at site GeoB17409 was found to contain a 6 cm thick layer dominated by terrestrial organic matter, which was interpreted as a result of the 2012 Typhoon Pablo-related fast deposition. |
| title | Natural and artificial radionuclides and organic geochemistry data of sediment core GeoB17402-1 and GeoB17409-1 |
| topic | Center for Marine Environmental Sciences; MARUM |
| url | https://doi.org/10.1594/PANGAEA.877438 |