纳哈纳根时期爱尔兰威克洛山脉的受限环状冰川(格陵兰冰川1/新仙女木期)

IF 1.9 3区 地球科学 Q3 GEOGRAPHY, PHYSICAL
Lauren Knight, Clare M. Boston, Harold Lovell, Timothy T. Barrows, Eric A. Colhoun, David Fink, Nicholas C. Pepin
{"title":"纳哈纳根时期爱尔兰威克洛山脉的受限环状冰川(格陵兰冰川1/新仙女木期)","authors":"Lauren Knight,&nbsp;Clare M. Boston,&nbsp;Harold Lovell,&nbsp;Timothy T. Barrows,&nbsp;Eric A. Colhoun,&nbsp;David Fink,&nbsp;Nicholas C. Pepin","doi":"10.1002/jqs.3699","DOIUrl":null,"url":null,"abstract":"<p>In Ireland, the Nahanagan Stadial (NS) was characterised by cirque glacier, plateau icefield and mountain ice cap expansion and is named after the cirque glacier type-site of Lough Nahanagan in the Wicklow Mountains. This period is broadly equivalent to the Younger Dryas Stadial and Greenland Stadial-1 (GS-1: ~12.9–11.7 ka). Here, we provide the first evaluation of the full extent of NS glaciation in the Wicklow Mountains by combining solar radiation modelling, mapping of glacial geomorphology, <sup>10</sup>Be and <sup>26</sup>Al cosmogenic surface exposure dating, 3D glacier reconstructions and analysis of snowblow and avalanching potential. We identify seven sites that hosted cirque glaciers at this time. Glacier extent was very restricted, with most glaciers only partially filling their cirques. Equilibrium line altitudes (ELAs) ranged from 470 ± 5 m a.s.l. (Lough Nahanagan) to 721 ± 5 m a.s.l. (Lough Cleevaun), with an average ELA of 599 m a.s.l. Higher snowblow and avalanching contributions at sites with lower ELAs demonstrate local topoclimatic influence on glacier growth and preservation alongside regional climate. The Wicklow Mountains provides a good example of marginal cirque glaciation during GS-1 and the importance of local topography and microclimate for sustaining glaciers in some mountain areas of Britain and Ireland.</p>","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"40 4","pages":"604-621"},"PeriodicalIF":1.9000,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jqs.3699","citationCount":"0","resultStr":"{\"title\":\"Restricted cirque glaciers in the Wicklow Mountains, Ireland, during the Nahanagan Stadial (Greenland Stadial-1/Younger Dryas)\",\"authors\":\"Lauren Knight,&nbsp;Clare M. Boston,&nbsp;Harold Lovell,&nbsp;Timothy T. Barrows,&nbsp;Eric A. Colhoun,&nbsp;David Fink,&nbsp;Nicholas C. Pepin\",\"doi\":\"10.1002/jqs.3699\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>In Ireland, the Nahanagan Stadial (NS) was characterised by cirque glacier, plateau icefield and mountain ice cap expansion and is named after the cirque glacier type-site of Lough Nahanagan in the Wicklow Mountains. This period is broadly equivalent to the Younger Dryas Stadial and Greenland Stadial-1 (GS-1: ~12.9–11.7 ka). Here, we provide the first evaluation of the full extent of NS glaciation in the Wicklow Mountains by combining solar radiation modelling, mapping of glacial geomorphology, <sup>10</sup>Be and <sup>26</sup>Al cosmogenic surface exposure dating, 3D glacier reconstructions and analysis of snowblow and avalanching potential. We identify seven sites that hosted cirque glaciers at this time. Glacier extent was very restricted, with most glaciers only partially filling their cirques. Equilibrium line altitudes (ELAs) ranged from 470 ± 5 m a.s.l. (Lough Nahanagan) to 721 ± 5 m a.s.l. (Lough Cleevaun), with an average ELA of 599 m a.s.l. Higher snowblow and avalanching contributions at sites with lower ELAs demonstrate local topoclimatic influence on glacier growth and preservation alongside regional climate. The Wicklow Mountains provides a good example of marginal cirque glaciation during GS-1 and the importance of local topography and microclimate for sustaining glaciers in some mountain areas of Britain and Ireland.</p>\",\"PeriodicalId\":16929,\"journal\":{\"name\":\"Journal of Quaternary Science\",\"volume\":\"40 4\",\"pages\":\"604-621\"},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2025-03-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jqs.3699\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Quaternary Science\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/jqs.3699\",\"RegionNum\":3,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"GEOGRAPHY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Quaternary Science","FirstCategoryId":"89","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/jqs.3699","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"GEOGRAPHY, PHYSICAL","Score":null,"Total":0}
引用次数: 0

摘要

在爱尔兰,Nahanagan Stadial (NS)以环状冰川、高原冰原和高山冰盖扩张为特征,并以威克洛山脉(Wicklow Mountains)纳哈那根湖(Lough Nahanagan)的环状冰川类型遗址命名。这一时期大致相当于新仙女木期和格陵兰期(GS-1: ~12.9 ~ 11.7 ka)。在这里,我们通过结合太阳辐射模拟、冰川地貌测绘、10Be和26Al宇宙形成表面暴露测年、三维冰川重建以及吹雪和雪崩潜力分析,首次对Wicklow Mountains的NS冰川覆盖范围进行了全面评估。我们确定了七个地点,在这个时候有马戏团冰川。冰川的范围非常有限,大多数冰川只能部分填满它们的圆环。平衡线高度(ELAs)在纳哈纳根湖(Lough Nahanagan) 470±5 ~ 721±5 m a.s.l.之间,平均ELAs为599 m a.s.l.。在ELAs较低的地点,较高的吹雪和雪崩贡献表明局地气候对冰川生长和保存的影响与区域气候同时发生。威克洛山脉提供了GS-1期间边缘环状冰川的一个很好的例子,以及当地地形和小气候对维持英国和爱尔兰一些山区冰川的重要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Restricted cirque glaciers in the Wicklow Mountains, Ireland, during the Nahanagan Stadial (Greenland Stadial-1/Younger Dryas)

In Ireland, the Nahanagan Stadial (NS) was characterised by cirque glacier, plateau icefield and mountain ice cap expansion and is named after the cirque glacier type-site of Lough Nahanagan in the Wicklow Mountains. This period is broadly equivalent to the Younger Dryas Stadial and Greenland Stadial-1 (GS-1: ~12.9–11.7 ka). Here, we provide the first evaluation of the full extent of NS glaciation in the Wicklow Mountains by combining solar radiation modelling, mapping of glacial geomorphology, 10Be and 26Al cosmogenic surface exposure dating, 3D glacier reconstructions and analysis of snowblow and avalanching potential. We identify seven sites that hosted cirque glaciers at this time. Glacier extent was very restricted, with most glaciers only partially filling their cirques. Equilibrium line altitudes (ELAs) ranged from 470 ± 5 m a.s.l. (Lough Nahanagan) to 721 ± 5 m a.s.l. (Lough Cleevaun), with an average ELA of 599 m a.s.l. Higher snowblow and avalanching contributions at sites with lower ELAs demonstrate local topoclimatic influence on glacier growth and preservation alongside regional climate. The Wicklow Mountains provides a good example of marginal cirque glaciation during GS-1 and the importance of local topography and microclimate for sustaining glaciers in some mountain areas of Britain and Ireland.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Journal of Quaternary Science
Journal of Quaternary Science 地学-地球科学综合
CiteScore
4.70
自引率
8.70%
发文量
82
审稿时长
6-12 weeks
期刊介绍: The Journal of Quaternary Science publishes original papers on any field of Quaternary research, and aims to promote a wider appreciation and deeper understanding of the earth''s history during the last 2.58 million years. Papers from a wide range of disciplines appear in JQS including, for example, Archaeology, Botany, Climatology, Geochemistry, Geochronology, Geology, Geomorphology, Geophysics, Glaciology, Limnology, Oceanography, Palaeoceanography, Palaeoclimatology, Palaeoecology, Palaeontology, Soil Science and Zoology. The journal particularly welcomes papers reporting the results of interdisciplinary or multidisciplinary research which are of wide international interest to Quaternary scientists. Short communications and correspondence relating to views and information contained in JQS may also be considered for publication.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信