气候变化领域集成服务门户(CCPortal): Linking pollen deposition and snow accumulation on the Alto dell'Ortles glacier (South Tyrol, Italy) for sub-seasonal dating of a firn temperate core

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DOI	10.5194/tc-11-937-2017
	Linking pollen deposition and snow accumulation on the Alto dell'Ortles glacier (South Tyrol, Italy) for sub-seasonal dating of a firn temperate core
	Festi D.; Carturan L.; Kofler W.; Fontana G.D.; De Blasi F.; Cazorzi F.; Bucher E.; Mair V.; Gabrielli P.; Oeggl K.
发表日期	2017
ISSN	19940416
卷号	11 期号:2
英文摘要	Dating of ice cores from temperate non-polar glaciers is challenging and often problematic. However, a proper timescale is essential for a correct interpretation of the proxies measured in the cores. Here, we introduce a new method developed to obtain a sub-seasonal timescale relying on statistically measured similarities between pollen spectra obtained from core samples and daily airborne pollen monitoring samples collected in the same area. This approach was developed on a 10m core retrieved from the temperate-firn portion of Alto dell'Ortles glacier (Eastern Italian Alps), for which a 5-year annual/seasonal timescale already exists. The aim was to considerably improve this timescale, reaching the highest possible temporal resolution and testing the efficiency and limits of pollen as a chronological tool. A test of the new timescale was performed by comparing our results to the output (date of layer formation) of the mass balance model EISModel, during the period encompassed by the timescale. The correspondence of the results supports the new sub-seasonal timescale based on pollen analysis. This comparison also allows us to draw important conclusions on the post-depositional effects of meltwater percolation on the pollen content of the firn core as well as on the climatic interpretation of the pollen signal. © 2017 Author(s).
学科领域	data interpretation; dating method; firn; glacier mass balance; meltwater; palynology; performance assessment; seasonality; testing method; Alto Adige; Italy; Ortles; Trentino-Alto Adige
语种	英语
scopus关键词	data interpretation; dating method; firn; glacier mass balance; meltwater; palynology; performance assessment; seasonality; testing method; Alto Adige; Italy; Ortles; Trentino-Alto Adige
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/119413
作者单位	Institute of Botany, University of Innsbruck, Sternwartestraße 15, Innsbruck, 6020, Austria; Department of Land Environment, Agriculture and Forestry, University of Padova, Viale dell'Università 16, Legnaro, PD, 35020, Italy; Department of Agriculture and Environmental Sciences, University of Udine, Via delle Scienze 208, Udine, 33100, Italy; Autonome Provinz Bozen Südtirol, Landesagentur für Umwelt, Biologisches Labor, Unterbergstraße 2, Leifers, BZ, 39055, Italy; Autonome Provinz Bozen Südtirol, Amt für Geologie und Baustoffprüfung, Eggentalerstraße 48, Kardaun (BZ), 39053, Italy; Byrd Polar and Climate Research Center, Ohio State University, 1090 Carmack Road, Columbus, OH 43210-1002, United States; School of Earth Sciences, 275 Mendenhall Laboratory, Ohio State University, 125 South Oval 8 Mall, Columbus, OH 43210, United States
推荐引用方式 GB/T 7714	Festi D.,Carturan L.,Kofler W.,et al. Linking pollen deposition and snow accumulation on the Alto dell'Ortles glacier (South Tyrol, Italy) for sub-seasonal dating of a firn temperate core[J],2017,11(2).
APA	Festi D..,Carturan L..,Kofler W..,Fontana G.D..,De Blasi F..,...&Oeggl K..(2017).Linking pollen deposition and snow accumulation on the Alto dell'Ortles glacier (South Tyrol, Italy) for sub-seasonal dating of a firn temperate core.Cryosphere,11(2).
MLA	Festi D.,et al."Linking pollen deposition and snow accumulation on the Alto dell'Ortles glacier (South Tyrol, Italy) for sub-seasonal dating of a firn temperate core".Cryosphere 11.2(2017).