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DOI | 10.1126/science.aat7067 |
The residence time of Southern Ocean surface waters and the 100,000-year ice age cycle | |
Hasenfratz, Adam P.1,2,3; Jaccard, Samuel L.2,3; Martinez-Garcia, Alfredo4; Sigman, Daniel M.5; Hodell, David A.6; Vance, Derek7; Bernasconi, Stefano M.1; Kleiven, Helga (Kikki) F.8,9; Haumann, F. Alexander10,11; Haug, Gerald H.1,4 | |
2019-03-08 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2019 |
卷号 | 363期号:6431页码:1080-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland; Germany; USA; England; Norway |
英文摘要 | From 1.25 million to 700,000 years ago, the ice age cycle deepened and lengthened from 41,000- to 100,000-year periodicity, a transition that remains unexplained. Using surface- and bottom-dwelling foraminifera from the Antarctic Zone of the Southern Ocean to reconstruct the deep-to-surface supply of water during the ice ages of the past 1.5 million years, we found that a reduction in deep water supply and a concomitant freshening of the surface ocean coincided with the emergence of the high-amplitude 100,000-year glacial cycle. We propose that this slowing of deep-to-surface circulation (i.e., a longer residence time for Antarctic surface waters) prolonged ice ages by allowing the Antarctic halocline to strengthen, which increased the resistance of the Antarctic upper water column to orbitally paced drivers of carbon dioxide release. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000460750100043 |
WOS关键词 | FORAMINIFERAL MG/CA PALEOTHERMOMETRY ; CARBON-DIOXIDE CONCENTRATION ; SEA-ICE ; ATMOSPHERIC CO2 ; PLANKTONIC-FORAMINIFERA ; ISOTOPIC COMPOSITION ; STABLE-ISOTOPES ; ATLANTIC SECTOR ; TEMPERATURE ; DEEP |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
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/200927 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Swiss Fed Inst Technol, Inst Geol, Dept Earth Sci, Zurich, Switzerland; 2.Univ Bern, Inst Geol Sci, Bern, Switzerland; 3.Univ Bern, Oeschger Ctr Climate Change Res, Bern, Switzerland; 4.Max Planck Inst Chem, Mainz, Germany; 5.Princeton Univ, Dept Geosci, Guyot Hall, Princeton, NJ 08544 USA; 6.Univ Cambridge, Dept Earth Sci, Cambridge, England; 7.Swiss Fed Inst Technol, Inst Geochem & Petrol, Zurich, Switzerland; 8.Univ Bergen, Dept Earth Sci, Bergen, Norway; 9.Univ Bergen, Bjerknes Ctr Climate Res, Bergen, Norway; 10.British Antarctic Survey, Cambridge, England; 11.Princeton Univ, Atmospher & Ocean Sci, Princeton, NJ 08544 USA |
推荐引用方式 GB/T 7714 | Hasenfratz, Adam P.,Jaccard, Samuel L.,Martinez-Garcia, Alfredo,et al. The residence time of Southern Ocean surface waters and the 100,000-year ice age cycle[J]. SCIENCE,2019,363(6431):1080-+. |
APA | Hasenfratz, Adam P..,Jaccard, Samuel L..,Martinez-Garcia, Alfredo.,Sigman, Daniel M..,Hodell, David A..,...&Haug, Gerald H..(2019).The residence time of Southern Ocean surface waters and the 100,000-year ice age cycle.SCIENCE,363(6431),1080-+. |
MLA | Hasenfratz, Adam P.,et al."The residence time of Southern Ocean surface waters and the 100,000-year ice age cycle".SCIENCE 363.6431(2019):1080-+. |
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