Particle dynamics revealed by 210Po/210Pb disequilibria around Prydz Bay, the Southern Ocean in summer
Seawater samples were collected around Prydz Bay in summer of 2014, dissolved and particulate 210Po and 210Pb were measured to reveal the disequilibrium characteristics and particle dynamics. Our results show that the distribution of 210Po and 210Po/210Pb activity ratio in the upper water is mainly...
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Polar Research Institute of China - PRIC
2022
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ftarcticportal:oai:generic.eprints.org:2776 2023-12-17T10:17:43+01:00 Particle dynamics revealed by 210Po/210Pb disequilibria around Prydz Bay, the Southern Ocean in summer Mengya, Chen Min, Chen Minfang, Zheng Yusheng, Qiu Jing, Zhu Qiankun, Qian 2022-03 application/pdf http://library.arcticportal.org/2776/ http://library.arcticportal.org/2776/1/6--APS-2021-0045.pdf en eng Polar Research Institute of China - PRIC http://library.arcticportal.org/2776/1/6--APS-2021-0045.pdf Mengya, Chen and Min, Chen and Minfang, Zheng and Yusheng, Qiu and Jing, Zhu and Qiankun, Qian (2022) Particle dynamics revealed by 210Po/210Pb disequilibria around Prydz Bay, the Southern Ocean in summer. Advances in Polar Science, 33 (1). pp. 71-85. Oceans Article PeerReviewed 2022 ftarcticportal 2023-11-22T23:54:40Z Seawater samples were collected around Prydz Bay in summer of 2014, dissolved and particulate 210Po and 210Pb were measured to reveal the disequilibrium characteristics and particle dynamics. Our results show that the distribution of 210Po and 210Po/210Pb activity ratio in the upper water is mainly affected by biological absorption or particle adsorption. An abnormal excess of 210Po relative to 210Pb was observed in the surface water at stations P1-2 and P2-2, which is likely to be the horizontal transport of water mass with high DPo/DPb)A.R. and TPo/TPb)A.R. In this study, the removal of particulate 210Po is mainly controlled by the scavenging of dissolved 210Po and the two have a linear positive correlation with the salinity, a negative linear correlation with the content of dissolved oxygen and a reciprocal relationship with the content of POC. The export flux of POC at 100 m is estimated to be 1.8–4.4 mmol·m−2·d−1 (avg. 2.9 mmol·m−2·d−1) based on 210Po/210Pb disequilibria, with the highest value in the shelf, which is consistent with the distribution of biological productivity. Article in Journal/Newspaper Advances in Polar Science Polar Science Polar Science Prydz Bay Southern Ocean Arctic Portal Library Southern Ocean Prydz Bay |
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Arctic Portal Library |
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ftarcticportal |
language |
English |
topic |
Oceans |
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Oceans Mengya, Chen Min, Chen Minfang, Zheng Yusheng, Qiu Jing, Zhu Qiankun, Qian Particle dynamics revealed by 210Po/210Pb disequilibria around Prydz Bay, the Southern Ocean in summer |
topic_facet |
Oceans |
description |
Seawater samples were collected around Prydz Bay in summer of 2014, dissolved and particulate 210Po and 210Pb were measured to reveal the disequilibrium characteristics and particle dynamics. Our results show that the distribution of 210Po and 210Po/210Pb activity ratio in the upper water is mainly affected by biological absorption or particle adsorption. An abnormal excess of 210Po relative to 210Pb was observed in the surface water at stations P1-2 and P2-2, which is likely to be the horizontal transport of water mass with high DPo/DPb)A.R. and TPo/TPb)A.R. In this study, the removal of particulate 210Po is mainly controlled by the scavenging of dissolved 210Po and the two have a linear positive correlation with the salinity, a negative linear correlation with the content of dissolved oxygen and a reciprocal relationship with the content of POC. The export flux of POC at 100 m is estimated to be 1.8–4.4 mmol·m−2·d−1 (avg. 2.9 mmol·m−2·d−1) based on 210Po/210Pb disequilibria, with the highest value in the shelf, which is consistent with the distribution of biological productivity. |
format |
Article in Journal/Newspaper |
author |
Mengya, Chen Min, Chen Minfang, Zheng Yusheng, Qiu Jing, Zhu Qiankun, Qian |
author_facet |
Mengya, Chen Min, Chen Minfang, Zheng Yusheng, Qiu Jing, Zhu Qiankun, Qian |
author_sort |
Mengya, Chen |
title |
Particle dynamics revealed by 210Po/210Pb disequilibria around Prydz Bay, the Southern Ocean in summer |
title_short |
Particle dynamics revealed by 210Po/210Pb disequilibria around Prydz Bay, the Southern Ocean in summer |
title_full |
Particle dynamics revealed by 210Po/210Pb disequilibria around Prydz Bay, the Southern Ocean in summer |
title_fullStr |
Particle dynamics revealed by 210Po/210Pb disequilibria around Prydz Bay, the Southern Ocean in summer |
title_full_unstemmed |
Particle dynamics revealed by 210Po/210Pb disequilibria around Prydz Bay, the Southern Ocean in summer |
title_sort |
particle dynamics revealed by 210po/210pb disequilibria around prydz bay, the southern ocean in summer |
publisher |
Polar Research Institute of China - PRIC |
publishDate |
2022 |
url |
http://library.arcticportal.org/2776/ http://library.arcticportal.org/2776/1/6--APS-2021-0045.pdf |
geographic |
Southern Ocean Prydz Bay |
geographic_facet |
Southern Ocean Prydz Bay |
genre |
Advances in Polar Science Polar Science Polar Science Prydz Bay Southern Ocean |
genre_facet |
Advances in Polar Science Polar Science Polar Science Prydz Bay Southern Ocean |
op_relation |
http://library.arcticportal.org/2776/1/6--APS-2021-0045.pdf Mengya, Chen and Min, Chen and Minfang, Zheng and Yusheng, Qiu and Jing, Zhu and Qiankun, Qian (2022) Particle dynamics revealed by 210Po/210Pb disequilibria around Prydz Bay, the Southern Ocean in summer. Advances in Polar Science, 33 (1). pp. 71-85. |
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1785584595580747776 |