DOI: 10.1016/j.quascirev.2016.01.004
Scopus记录号: 2-s2.0-84954479233
论文题名: Glacial chronology and palaeoclimate in the Bystra catchment, Western Tatra Mountains (Poland) during the Late Pleistocene
作者: Makos M. ; Rinterknecht V. ; Braucher R. ; Zarnowski M. ; Aster Team
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 134 起始页码: 74
结束页码: 91
语种: 英语
英文关键词: 10-Be chronology
; Deglaciation
; Late Pleistocene
; Palaeoclimate
; Tatra Mountains
Scopus关键词: Catchments
; Geochronology
; Glacial geology
; Runoff
; 10-Be chronology
; Deglaciations
; Late Pleistocene
; Palaeoclimate
; Tatra mountains
; Landforms
; catchment
; chronology
; climate modeling
; dating method
; deglaciation
; geochronology
; glacier
; moraine
; Older Dryas
; paleoclimate
; Pleistocene
; topography
; valley
; Carpathians
; Poland [Central Europe]
; Tatra Mountains
英文摘要: Deglaciation chronology of the Bystra catchment (Western Tatra Mountains) has been reconstructed based on 10Be exposure age dating. Fourteen rock samples were collected from boulders located on three moraines that limit the horizontal extent of the LGM maximum advance and the Lateglacial recessional stage. The oldest preserved, maximum moraine was dated at 15.5 ± 0.8 ka, an age that could be explained more likely by post-depositional erosion of the moraine. Such scenario is supported by geomorphologic and palaeoclimatological evidence. The younger cold stage is represented by well-preserved termino-lateral moraine systems in the Kondratowa and Sucha Kasprowa valleys. The distribution of the moraine ridges in both valleys suggest a complex history of deglaciation of the area. The first Late-glacial re-advance (LG1) was followed by a cold oscillation (LG2), that occurred at around 14.0 ± 0.7-13.7 ± 1.2 ka. Glaciers during both stages had nearly the same horizontal extent, however, their thickness and geometry changed significantly, mainly due to local climatic conditions triggered by topography, controlling the exposition to solar radiation. The LG1 stage occurred probably during the pre-Bølling cold stage (Greenland Stadial 2.1a), however, the LG2 stage can be correlated with the cooling at around 14 ka during the Greenland Interstadial 1 (GI-1d - Older Dryas). This is the first chronological evidence of the Older Dryas in the Tatra Mountains. The ELA of the maximum Bystra glacier was located at 1480 m a.s.l. in accordance with the ELA in the High Tatra Mountains during the LGM. During the LG1 and LG2 stages, the ELA in the catchment rose up to 1520-1530 m a.s.l. and was located approximately 100-150 m lower than in the eastern part of the massif. Climate modelling results show that the Bystra glacier (maximum advance) could have advanced in the catchment when mean annual temperature was lower than today by 11-12 °C and precipitation was reduced by 40-60%. This is in accordance with LGM conditions previously reported for the High Tatras. During the LG1 and LG2 stages the temperature decrease in the study area reached 10 °C and precipitation was lower by ~30% compare to modern conditions. This resulted in slightly higher accumulation (20-30%) in the Western Tatra Mountains compare to the High Tatra Mountains. © 2016 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59688
Appears in Collections: 过去全球变化的重建
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作者单位: Climate Geology Department, University of Warsaw, 93 Zwirki i Wigury St., Warsaw, Poland; Université Paris 1 Panthéon-Sorbonne, Laboratoire de Géographie Physique, CNRS, UMR 8591, Meudon, France; School of Geography and Geosciences, University of St Andrews, St Andrews, United Kingdom; Aix-Marseille Université, CNRS-IRD-Collège de France, UMR 34 CEREGE, Technopole de l'Environnement Arbois-Méditerranée, BP80, Aix-en-Provence, France
Recommended Citation:
Makos M.,Rinterknecht V.,Braucher R.,et al. Glacial chronology and palaeoclimate in the Bystra catchment, Western Tatra Mountains (Poland) during the Late Pleistocene[J]. Quaternary Science Reviews,2016-01-01,134