Cryogenic cave carbonates in the Dolomites (northern Italy): insights into Younger Dryas cooling and seasonal precipitation
Koltai, Gabriella1; Spoetl, Christoph1; Jarosch, Alexander H.2; Cheng, Hai3,4,5
通讯作者Koltai, Gabriella(gabriella.koltai@uibk.ac.at)
2021-04-06
发表期刊CLIMATE OF THE PAST
ISSN1814-9324
卷号17期号:2页码:775-789
摘要In the European Alps, the Younger Dryas (YD) was characterised by the last major glacier advance, with equilibrium line altitudes being similar to 220 to 290 m lower than during the Little Ice Age, and also by the development of rock glaciers. Dating of these geomorphic features, however, is associated with substantial uncertainties, leading to considerable ambiguities regarding the internal structure of this stadial, which is the most intensively studied one of the last glacial period. Here, we provide robust physical evidence based on Th-230-dated cryogenic cave carbonates (CCCs) from a cave located at 2274 m a.s.l. in the Dolomites of northern Italy coupled with thermal modelling, indicating that early YD winters were only moderately cold in this part of the Alps. More precisely, we find that the mean annual air temperature dropped <= 3 degrees C at the Allerod-YD transition. Our data suggest that autumns and early winters in the early part of the YD were relatively snow-rich, resulting in stable winter snow cover. The latter insulated the shallow subsurface in winter and allowed the cave interior to remain close to the freezing point (0 degrees C) year-round, promoting CCC formation. The main phase of CCC precipitation at similar to 12.2 ka coincided with the mid-YD transition recorded in other archives across Europe. Based on thermal modelling we propose that CCC formation at similar to 12.2 ka was most likely associated with a slight warming of approximately +1 degrees C in conjunction with drier autumns and early winters in the second half of the YD. These changes triggered CCC formation in this Alpine cave as well as ice glacier retreat and rock glacier expansion across the Alps.
DOI10.5194/cp-17-775-2021
收录类别SCI ; SCI
语种英语
资助项目Autonome Provinz Bozen-Sudtirol (Amt fur Wissenschaft und Forschung)[(3/34)] ; Autonome Provinz Bozen-Sudtirol (Amt fur Wissenschaft und Forschung)[WF-F.16947/5-2019]
WOS研究方向Geology ; Meteorology & Atmospheric Sciences
项目资助者Autonome Provinz Bozen-Sudtirol (Amt fur Wissenschaft und Forschung)
WOS类目Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS记录号WOS:000638138000002
出版者COPERNICUS GESELLSCHAFT MBH
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/16306
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Koltai, Gabriella
作者单位1.Univ Innsbruck, Inst Geol, Innrain 52d, A-6020 Innsbruck, Austria
2.ThetaFrame Solut, Horfarterstr 14, A-6330 Kufstein, Austria
3.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian, Peoples R China
4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China
5.Univ Minnesota, Dept Earth Sci, Minneapolis, MN USA
推荐引用方式
GB/T 7714
Koltai, Gabriella,Spoetl, Christoph,Jarosch, Alexander H.,et al. Cryogenic cave carbonates in the Dolomites (northern Italy): insights into Younger Dryas cooling and seasonal precipitation[J]. CLIMATE OF THE PAST,2021,17(2):775-789.
APA Koltai, Gabriella,Spoetl, Christoph,Jarosch, Alexander H.,&Cheng, Hai.(2021).Cryogenic cave carbonates in the Dolomites (northern Italy): insights into Younger Dryas cooling and seasonal precipitation.CLIMATE OF THE PAST,17(2),775-789.
MLA Koltai, Gabriella,et al."Cryogenic cave carbonates in the Dolomites (northern Italy): insights into Younger Dryas cooling and seasonal precipitation".CLIMATE OF THE PAST 17.2(2021):775-789.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Koltai, Gabriella]的文章
[Spoetl, Christoph]的文章
[Jarosch, Alexander H.]的文章
百度学术
百度学术中相似的文章
[Koltai, Gabriella]的文章
[Spoetl, Christoph]的文章
[Jarosch, Alexander H.]的文章
必应学术
必应学术中相似的文章
[Koltai, Gabriella]的文章
[Spoetl, Christoph]的文章
[Jarosch, Alexander H.]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

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。