Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL078751 |
Monsoonal Forcing of European Ice-Sheet Dynamics During the Late Quaternary | |
Kaboth-Bahr, Stefanie1,2; Bahr, Andre2; Zeeden, Christian3; Toucanne, Samuel4; Eynaud, Frederique5; Jimenez-Espejo, Francisco6; Rohl, Ursula7; Friedrich, Oliver2; Pross, Joerg2; Lowemark, Ludvig1; Lourens, Lucas J.8 | |
2018-07-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
![]() |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:14页码:7066-7074 |
文章类型 | Article |
语种 | 英语 |
国家 | Taiwan; Germany; France; Japan; Netherlands |
英文摘要 | The dynamics of Northern Hemisphere ice sheets during Late Quaternary glacials have yet been dominantly examined from a Laurentide Ice Sheet perspective, which helped shaping the idea of moisture-starved glacials and small-scale ice volume variability. However, the waxing and waning of the European Ice Sheet (EIS) casts doubt on this perception. Understanding EIS dynamics under glacial boundary conditions is crucial because its meltwater pulses influence global climate by weakening deepwater formation in the North Atlantic Ocean. Here we show that the advection of subtropical water toward the continental margin of western Europe lead to enhanced moisture availability on the continent and fueled the growth of EIS lobes during glacials. This warm-water pooling was caused by monsoonally paced enhanced Mediterranean Outflow Water (MOW) entrainment that dragged subtropical surface waters toward the European margin. This mechanism presents a yet unrecognized marine-terrestrial pathway that allows low-latitude forcing to shape high-latitude glaciations. Plain Language Summary The build-up of glacial ice shields required large amounts of atmospheric precipitating as snow. However, under full glacial conditions, cold surface oceans reduce the amount of evaporation, which counteracts the growth of large continental ice shields. Our study aims to unravel the source and transport pathways of moisture that helped to rapidly form the European Ice Shield during the past two glacials. We propose the novel concept that the outflow of dense Mediterranean water into the North Atlantic played a decisive role as it helped to "drag" warm surface waters toward the European Margin by strengthening the Azores Current. This warm, subtropical water current supplied vast amounts of moisture, which then was transported northward into continental Europe and fueled ice sheet growth. The strength of Mediterranean Outflow Water discharge into the Atlantic strongly depends on monsoonal activity in its source region in the Eastern Mediterranean Sea. Thus, warm water advection toward western Europe and associated glacier growth of the European Ice Shield are intimately linked to low-latitude climate changes, closely following the similar to 21 kyr beat of orbital precession. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000442582100035 |
WOS关键词 | NORTH-ATLANTIC OCEAN ; MEDITERRANEAN OUTFLOW ; AZORES CURRENT ; LAST DEGLACIATION ; LATE PLEISTOCENE ; CLIMATE ; VARIABILITY ; KYR ; TRANSITION ; INSOLATION |
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/29094 |
专题 | 气候变化 |
作者单位 | 1.Natl Taiwan Univ, Dept Geosci, Taipei, Taiwan; 2.Heidelberg Univ, Inst Earth Sci, Heidelberg, Germany; 3.PSL Res Univ, Observ Paris, IMCEE, Paris, France; 4.IFREMER, Ctr Bretagne, UR Geosci Marines, Plouzane, France; 5.Univ Bordeaux, Environm & Paleoenvironm Ocean & Continentaux UMR, Pessac, France; 6.JAMSTEC, Yokosuka, Kanagawa, Japan; 7.Univ Bremen, MARUM, Bremen, Germany; 8.Univ Utrecht, Dept Earth Sci, Utrecht, Netherlands |
推荐引用方式 GB/T 7714 | Kaboth-Bahr, Stefanie,Bahr, Andre,Zeeden, Christian,et al. Monsoonal Forcing of European Ice-Sheet Dynamics During the Late Quaternary[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(14):7066-7074. |
APA | Kaboth-Bahr, Stefanie.,Bahr, Andre.,Zeeden, Christian.,Toucanne, Samuel.,Eynaud, Frederique.,...&Lourens, Lucas J..(2018).Monsoonal Forcing of European Ice-Sheet Dynamics During the Late Quaternary.GEOPHYSICAL RESEARCH LETTERS,45(14),7066-7074. |
MLA | Kaboth-Bahr, Stefanie,et al."Monsoonal Forcing of European Ice-Sheet Dynamics During the Late Quaternary".GEOPHYSICAL RESEARCH LETTERS 45.14(2018):7066-7074. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论