https://scholars.lib.ntu.edu.tw/handle/123456789/493178
標題: | Monsoonal Forcing of European Ice-Sheet Dynamics During the Late Quaternary | 作者: | Kaboth-Bahr, S. Bahr, A. Zeeden, C. Toucanne, S. Eynaud, F. Jim?nez-Espejo, F. R?hl, U. Friedrich, O. Pross, J. L?wemark, L. Lourens, L.J. LUDVIG LOWEMARK |
關鍵字: | European Ice Sheet dynamics; glacial climate variability; low-latitude forcing of high-latitude glaciations; marine-terrestrial feedback in the Euro-Mediterranean realm; Mediterranean Outflow variability | 公開日期: | 2018 | 卷: | 45 | 期: | 14 | 起(迄)頁: | 7066-7074 | 來源出版物: | Geophysical Research Letters | 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. ©2018. American Geophysical Union. All Rights Reserved. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/493178 | DOI: | 10.1029/2018GL078751 | SDG/關鍵字: | Dynamics; Glacial geology; Glaciers; Moisture; Tropics; European ice sheets; Glacial climate; High Latitudes; marine-terrestrial feedback in the Euro-Mediterranean realm; Mediterranean Outflow variability; Ice; advection; boundary condition; climate feedback; climate forcing; climate variation; continental margin; deep water; entrainment; glacial environment; glaciation; global climate; Laurentide Ice Sheet; Mediterranean environment; meltwater; monsoon; Northern Hemisphere; outflow; Quaternary; subtropical region; Atlantic Ocean; Atlantic Ocean (North); Europe |
顯示於: | 地質科學系 |
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