Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL073897 |
Whole-Ocean Changes in Silica and Ge/Si Ratios During the Last Deglacial Deduced From Long-Lived Giant Glass Sponges | |
Jochum, K. P.1,2; Schuessler, J. A.3; Wang, X. -H.4; Stoll, B.1,2; Weis, U.1,2; Mueller, W. E. G.4; Haug, G. H.2; Andreae, M. O.1,5; Froelich, P. N.6 | |
2017-11-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:22 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; USA |
英文摘要 | Silicon is a keystone nutrient in the ocean for understanding climate change because of the importance of Southern Ocean diatoms in taking up CO2 from the surface ocean-atmosphere system and sequestering carbon into the deep sea. Here we report on silicon isotopes and germanium-to-silicon ratios in giant glass spicules of deep-sea sponge Monorhaphis chuni over the past 17,000 years. In situ measurements of Si isotopes and Ge concentrations show systematic variations from rim to center of the cross sections. When calibrated against seawater concentrations using data from modern spicule rims, sponge data indicate that dissolved silica concentrations in the deep Pacific were similar to 12% higher during the early deglacial. These deep Pacific Ocean data help to fill an important global gap in paleo-nutrient records. Either continental sources supplied more silica to the deglacial ocean and/or biogenic silica burial was lower, both of which may have affected atmospheric CO2. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000419102300038 |
WOS关键词 | EASTERN EQUATORIAL PACIFIC ; SOUTH CHINA SEA ; DEEP-SEA ; NORTH-ATLANTIC ; BIOLOGICAL FRACTIONATION ; INORGANIC GERMANIUM ; ISOTOPE COMPOSITION ; GLACIAL CYCLE ; INTERMEDIATE WATER ; MONORHAPHIS-CHUNI |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28655 |
专题 | 气候变化 |
作者单位 | 1.Max Planck Inst Chem, Biogeochem Dept, Mainz, Germany; 2.Max Planck Inst Chem, Climate Geochem Dept, Mainz, Germany; 3.GFZ German Res Ctr Geosci, Potsdam, Germany; 4.Johannes Gutenberg Univ Mainz, Univ Med Ctr, Inst Physiol Chem, ERC Adv Grant Res Grp, Mainz, Germany; 5.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA; 6.Duke Univ, Nicholas Sch Environm, Durham, NC 27708 USA |
推荐引用方式 GB/T 7714 | Jochum, K. P.,Schuessler, J. A.,Wang, X. -H.,et al. Whole-Ocean Changes in Silica and Ge/Si Ratios During the Last Deglacial Deduced From Long-Lived Giant Glass Sponges[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(22). |
APA | Jochum, K. P..,Schuessler, J. A..,Wang, X. -H..,Stoll, B..,Weis, U..,...&Froelich, P. N..(2017).Whole-Ocean Changes in Silica and Ge/Si Ratios During the Last Deglacial Deduced From Long-Lived Giant Glass Sponges.GEOPHYSICAL RESEARCH LETTERS,44(22). |
MLA | Jochum, K. P.,et al."Whole-Ocean Changes in Silica and Ge/Si Ratios During the Last Deglacial Deduced From Long-Lived Giant Glass Sponges".GEOPHYSICAL RESEARCH LETTERS 44.22(2017). |
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