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DOI | 10.1038/s41586-019-1277-1 |
Constraints on global mean sea level during Pliocene warmth | |
Dumitru, Oana A.1; Austermann, Jacqueline2; Polyak, Victor J.3; Fornos, Joan J.4; Asmerom, Yemane3; Gines, Joaquin4; Gines, Angel4; Onac, Bogdan P.1,5 | |
2019-06-12 | |
发表期刊 | NATURE
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ISSN | 0028-0836 |
EISSN | 1476-4687 |
出版年 | 2019 |
卷号 | 574期号:7777页码:233-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Spain; Romania |
英文摘要 | Reconstructing the evolution of sea level during past warmer epochs such as the Pliocene provides insight into the response of sea level and ice sheets to prolonged warming(1). Although estimates of the global mean sea level (GMSL) during this time do exist, they vary by several tens of metres(2-4), hindering the assessment of past and future ice-sheet stability. Here we show that during the mid-Piacenzian Warm Period, which was on average two to three degrees Celsius warmer than the pre-industrial period(5), the GMSL was about 16.2 metres higher than today owing to global ice-volume changes, and around 17.4 metres when thermal expansion of the oceans is included. During the even warmer Pliocene Climatic Optimum (about four degrees Celsius warmer than pre-industrial levels)(6), our results show that the GMSL was 23.5 metres above the present level, with an additional 1.6 metres from thermal expansion. We provide six GMSL data points, ranging from 4.39 to 3.27 million years ago, that are based on phreatic overgrowths on speleothems from the western Mediterranean (Mallorca, Spain). This record is unique owing to its clear relationship to sea level, its reliable U-Pb ages and its long timespan, which allows us to quantify uncertainties on potential uplift. Our data indicate that ice sheets are very sensitive to warming and provide important calibration targets for future ice-sheet models(7). |
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:000489784200044 |
WOS关键词 | ICE-VOLUME ; DYNAMIC TOPOGRAPHY ; MEDITERRANEAN SEA ; MARINE ; TEMPERATURE ; MIOCENE ; RECORD ; SHEET ; OCEAN ; ANTARCTICA |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
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/203068 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ S Florida, Sch Geosci, Karst Res Grp, Tampa, FL 33620 USA; 2.Columbia Univ, Lamont Doherty Earth Observ, Dept Earth & Environm Sci, Palisade, NY USA; 3.Univ New Mexico, Dept Earth & Planetary Sci, Albuquerque, NM 87131 USA; 4.Univ Illes Balears, Earth Sci Res Grp, Palma De Mallorca, Spain; 5.Babes Bolyai Univ, Dept Geol, Cluj Napoca, Romania |
推荐引用方式 GB/T 7714 | Dumitru, Oana A.,Austermann, Jacqueline,Polyak, Victor J.,et al. Constraints on global mean sea level during Pliocene warmth[J]. NATURE,2019,574(7777):233-+. |
APA | Dumitru, Oana A..,Austermann, Jacqueline.,Polyak, Victor J..,Fornos, Joan J..,Asmerom, Yemane.,...&Onac, Bogdan P..(2019).Constraints on global mean sea level during Pliocene warmth.NATURE,574(7777),233-+. |
MLA | Dumitru, Oana A.,et al."Constraints on global mean sea level during Pliocene warmth".NATURE 574.7777(2019):233-+. |
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