Chemostratigraphy and source of mercury in the Tropical Western Pacific over the past 600 kyr
文献类型：期刊论文
| 作者 | Pei, Wenlong2; Wang, Xinling2; Wang, Jiayue2; Zhang, Rui2,3,4,8,11; Li, Tiegang9,10; Russell, James11; Zhang, Fan7; Yu, Xiaoxiao5; Liu, Zhiyong6; Guan, Minglei2 |
| 刊名 | JOURNAL OF SEA RESEARCH
 |
| 出版日期 | 2023-06-01 |
| 卷号 | 193页码:8 |
| 关键词 | Volcanism Hg isotopes Western Pacific warm Pool Source identification Glacial-interglacial cycles |
| ISSN号 | 1385-1101 |
| DOI | 10.1016/j.seares.2023.102369 |
| 英文摘要 | To characterize the geochemical records of mercury (Hg) in the western tropical Pacific in the last 600 ka, the total concentration of Hg, and its isotopic compositions in Hole B at Site U1486 from the Western Pacific Warm Pool (WPWP) were determined. Some marked positive values of & UDelta;199Hg in this core, and some & UDelta;200Hg also exhibit significant positive, which resultes from the photoreduction of the volcanic Hg deposits through the long-range atmospheric transportation. In addition, dual odd-even Hg isotopes (& UDelta;199Hg and & UDelta;200Hg) database was also compiled to account for quantitative contributions to potential Hg sources, including marine Hg source, atmospheric Hg deposition, volcanic Hg source, and terrigenous Hg inputs. This study presents that sedimentary Hg in the core Hole B at Site U1486 originates mainly from the marine Hg source with a mean of 64.13%, which is similar to the changes of paleo-productivity in the WPWP with a character of the glacial-interglacial variation. The contributions of atmospheric Hg deposition, volcanic Hg source, and terrigenous Hg inputs represented approximately 17.88%, 10.37%, and 7.87% of the total Hg burden in this core, respectively. During the last 100 ka, the contribution of volcanic Hg source has increased overall, suggesting the increase of volcanic activity. And the amount of atmospheric Hg deposition in this core also generally increased during this period, which was in resonance with the eolian dust in the western Pacific. Furthermore, terrigenous Hg inputs in this study could be related to intensity of monsoon precipitation with an overall increasing trend. In this study, volcanic activities in sediment cores from the western Pacific can provide an additional and independent tool for the precise dating and synchronization of paleoenvironmental changes in these climatically significant regions. |
| WOS研究方向 | Marine & Freshwater Biology ; Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:001050166300001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74661]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 通讯作者 | Zhang, Rui; Li, Tiegang |
| 作者单位 | 1.China Univ Geosci, Sch Ocean Sci, Beijing 100083, Peoples R China 2.Jiangsu Ocean Univ, Sch Marine Technol & Geomat, Lianyungang 222005, Jiangsu Provinc, Peoples R China 3.Jiangsu Ocean Univ, Jiangsu Key Lab Marine Bioresources & Environm, Lianyungang 222005, Jiangsu Provinc, Peoples R China 4.Jiangsu Ocean Univ, Coinnovat Ctr Jiangsu Marine Bioind Technol, Lianyungang 222005, Jiangsu Provinc, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China 6.Soochow Univ, Collaborat Innovat Ctr, Sch Radiol & Interdisciplinary Sci RAD X, State Key Lab Radiat Med & Protect,Radiat Med Jian, Suzhou 215123, Jiangsu Provinc, Peoples R China 7.Jiangsu Ocean Univ, Sch Environm & Chem Engn, Lianyungang 222005, Jiangsu Provinc, Peoples R China 8.Jiangsu Ocean Univ, Sch Geodesy & Geomat Engn, Lianyungang 222005, Jiangsu Provinc, Peoples R China 9.Minist Nat Resources, Inst Oceanog 1, Qingdao 266061, Shandong Provin, Peoples R China 10.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pei, Wenlong,Wang, Xinling,Wang, Jiayue,et al. Chemostratigraphy and source of mercury in the Tropical Western Pacific over the past 600 kyr[J]. JOURNAL OF SEA RESEARCH,2023,193:8. |
| APA | Pei, Wenlong.,Wang, Xinling.,Wang, Jiayue.,Zhang, Rui.,Li, Tiegang.,...&Han, Qi.(2023).Chemostratigraphy and source of mercury in the Tropical Western Pacific over the past 600 kyr.JOURNAL OF SEA RESEARCH,193,8. |
| MLA | Pei, Wenlong,et al."Chemostratigraphy and source of mercury in the Tropical Western Pacific over the past 600 kyr".JOURNAL OF SEA RESEARCH 193(2023):8. |
入库方式： OAI收割
来源：广州地球化学研究所
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