Atlantic water heat transfer through the Arctic Gateway (Fram Strait) during the Last Interglacial

Atlantic water heat transfer through the Arctic Gateway (Fram Strait) during the Last Interglacial
复制标题

末次间冰期期间,大西洋水通过北极门户(弗拉姆海峡)进行热传递

DOI:
10.1016/j.gloplacha.2017.09.005
复制
发表时间:
2017
影响因子:
3.9
通讯作者:
Spielhagen
Spielhagen
中科院分区:
地球科学1区
文献类型:
--
作者:
Zhuravleva;Spielhagen

文献摘要

参考文献

被引文献

相似文献

北极地区的末次间冰期通常被描述为气候变暖、夏季海冰明显少于今天的时期。然而,大西洋水(AW)作为进入北冰洋的主要海洋热通量剂的作用仍然不清楚。利用高分辨率的稳定同位素和来自唯一的北极深门户——弗拉姆海峡的动物记录,我们注意到,在上层水柱上,AW的影响减弱了,表面海洋条件通常比全新世更冷。在主要的撒勒冰消作用结束后,发生了第一次向北平流的AW增强(~124 ka)。然而,由~122 ka融水释放引发的间歇性海面冷却导致了向间冰期高峰条件进一步发展的区域延迟。最大的AW热平流发生在MIS 5e晚期(118.5-116 ka),并中断了从大约120 ka开始的海面较长期的冷却趋势。在弗拉姆海峡,主要由海温引起的近地表变暖发生得如此之晚——这与全新世早期的变暖高峰形成鲜明对比——与挪威海上游的记录在时间上比较得很好,总的来说,这意味着在末次间冰期,从南到北的海洋热传递通过北欧海东部进入高北极地区。
The Last Interglacial in the Arctic region is often described as a time with warmer conditions and significantly less summer sea ice than today. The role of Atlantic water (AW) as the main oceanic heat flux agent into the Arctic Ocean remains, however, unclear. Using high-resolution stable isotope and faunal records from the only deep Arctic Gateway, the Fram Strait, we note for the upper water column a diminished influence of AW and generally colder-than-Holocene surface ocean conditions. After the main Saalian deglaciation had terminated, a first intensification of northward-advected AW happened (~124 ka). However, an intermittent sea surface cooling, triggered by meltwater release at ~122 ka, caused a regional delay in the further development towards peak interglacial conditions. Maximum AW heat advection occurred during late MIS 5e (118.5-116 ka) and interrupted a longer-term cooling trend at the sea surface that started from about 120 ka on. Such a late occurrence of the major AW-derived near-surface warming in the Fram Strait - this is in stark contrast to an early warm peak in the Holocene - compares well in time with upstream records from the Norwegian Sea, altogether implying a coherent development of south-to-north ocean heat transfer through the eastern Nordic Seas and into the high Arctic during the Last Interglacial.
俄罗斯西北部白海地区末次间冰期海洋环境
DOI: --
发表时间: 2006
期刊:
影响因子: --
作者:
K. GrØsfjeld;S. Funder;M. Seidenkrantz;C. Glaister
通讯作者: C. Glaister
DOI: 10.1016/s0025-3227(01)00158-x
发表时间: 2001-06
期刊: Marine Geology
影响因子: 2.9
作者:
M. Hald;T. Dokken;G. Mikalsen
通讯作者: M. Hald;T. Dokken;G. Mikalsen
DOI: 10.1016/s0377-8398(96)00014-x
发表时间: 1997-02-01
影响因子: 1.9
作者:
Carstens, J;Hebbeln, D;Wefer, G
通讯作者: Wefer, G
弗拉姆海峡全新世海洋地下和表层水团——温度和海冰重建的比较
DOI: 10.1016/j.quascirev.2015.09.007
发表时间: 2016
影响因子: 4
作者:
K. Werner;J. Müller;K. Husum;R. Spielhagen;E. Kandiano;L. Polyak
通讯作者: L. Polyak
北大西洋极地弗拉姆海峡东部的晚冰期-全新世早期多代理记录
DOI: --
发表时间: 2014
期刊:
影响因子: --
作者:
S. Aagaard;K. Husum;K. Werner;R. Spielhagen;M. Hald;T. Marchitto
通讯作者: T. Marchitto