气候变化领域集成服务门户(CCPortal): Age of the Mt. Ortles ice cores, the Tyrolean Iceman and glaciation of the highest summit of South Tyrol since the Northern Hemisphere Climatic Optimum

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DOI	10.5194/tc-10-2779-2016
	Age of the Mt. Ortles ice cores, the Tyrolean Iceman and glaciation of the highest summit of South Tyrol since the Northern Hemisphere Climatic Optimum
	Gabrielli P.; Barbante C.; Bertagna G.; Bertó M.; Binder D.; Carton A.; Carturan L.; Cazorzi F.; Cozzi G.; Dalla Fontana G.; Davis M.; De Blasi F.; Dinale R.; Dragà G.; Dreossi G.; Festi D.; Frezzotti M.; Gabrieli J.; Galos S.; Ginot P.; Heidenwolf P.; Jenk T.M.; Kehrwald N.; Kenny D.; Magand O.; Mair V.; Mikhalenko V.; Lin P.N.; Oeggl K.; Piffer G.; Rinaldi M.; Schotterer U.; Schwikowski M.; Seppi R.; Spolaor A.; Stenni B.; Tonidandel D.; Uglietti C.; Zagorodnov V.; Zanoner T.; Zennaro P.
发表日期	2016
ISSN	19940416
卷号	10 期号:6
英文摘要	In 2011 four ice cores were extracted from the summit of Alto dell'Ortles (3859-m), the highest glacier of South Tyrol in the Italian Alps. This drilling site is located only 37 km southwest from where the Tyrolean Iceman, ∼ 5.3 kyrs old, was discovered emerging from the ablating ice field of Tisenjoch (3210 m, near the Italian-Austrian border) in 1991. The excellent preservation of this mummy suggested that the Tyrolean Iceman was continuously embedded in prehistoric ice and that additional ancient ice was likely preserved elsewhere in South Tyrol. Dating of the ice cores from Alto dell'Ortles based on 210Pb, tritium, beta activity and 14C determinations, combined with an empirical model (COPRA), provides evidence for a chronologically ordered ice stratigraphy from the modern glacier surface down to the bottom ice layers with an age of ∼ 7 kyrs, which confirms the hypothesis. Our results indicate that the drilling site has continuously been glaciated on frozen bedrock since ∼ 7 kyrs BP. Absence of older ice on the highest glacier of South Tyrol is consistent with the removal of basal ice from bedrock during the Northern Hemisphere Climatic Optimum (6-9 kyrs BP), the warmest interval in the European Alps during the Holocene. Borehole inclinometric measurements of the current glacier flow combined with surface ground penetration radar (GPR) measurements indicate that, due to the sustained atmospheric warming since the 1980s, an acceleration of the glacier Alto dell'Ortles flow has just recently begun. Given the stratigraphic-chronological continuity of the Mt. Ortles cores over millennia, it can be argued that this behaviour has been unprecedented at this location since the Northern Hemisphere Climatic Optimum. © 2016 Author(s).
语种	英语
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119545
作者单位	Byrd Polar and Climate Research Center, Ohio State University, Columbus, 43210, United States; School of Earth Sciences, Ohio State University, 275 Mendenhall Laboratory, Columbus, 43210, United States; Department of Environmental Sciences Informatics and Statistics, Ca' Foscari University of Venice, Venice-Mestre, 30170, Italy; Istituto per la Dinamica Dei Processi Ambientali-CNR, Venice-Mestre, 30170, Italy; Accademia Nazionale Dei Lincei, Rome, 00196, Italy; Climate Research Section, Central Institute for Meteorology and Geodynamics ZAMG, Vienna, 1190, Austria; Department of Geosciences, University of Padova, Padova, 35131, Italy; Department of Land Environment, Agriculture and Forestry, University of Padova, Agripolis Legnaro, 35020, Italy; Dipartimento di Scienze Agro-Alimentari Ambientali e Animali, Università di Udine, Udine, 33100, Italy; Ufficio Idrografico Provincia Autonoma di Bolzano, Bolzano, 39100, Italy; Geologin, Varna, 39040, Italy; Institute for Botany, University of Innsbruck, Innsbruck...
推荐引用方式 GB/T 7714	Gabrielli P.,Barbante C.,Bertagna G.,et al. Age of the Mt. Ortles ice cores, the Tyrolean Iceman and glaciation of the highest summit of South Tyrol since the Northern Hemisphere Climatic Optimum[J],2016,10(6).
APA	Gabrielli P..,Barbante C..,Bertagna G..,Bertó M..,Binder D..,...&Zennaro P..(2016).Age of the Mt. Ortles ice cores, the Tyrolean Iceman and glaciation of the highest summit of South Tyrol since the Northern Hemisphere Climatic Optimum.Cryosphere,10(6).
MLA	Gabrielli P.,et al."Age of the Mt. Ortles ice cores, the Tyrolean Iceman and glaciation of the highest summit of South Tyrol since the Northern Hemisphere Climatic Optimum".Cryosphere 10.6(2016).