scholarly journals Speleothem Records from the Eastern Part of Europe and Turkey—Discussion on Stable Oxygen and Carbon Isotopes

Quaternary ◽  
2019 ◽  
Vol 2 (3) ◽  
pp. 31 ◽  
Author(s):  
Zoltán Kern ◽  
Attila Demény ◽  
Aurel Perşoiu ◽  
István Gábor Hatvani
Keyword(s):  
Oxygen Isotope ◽  
Central Europe ◽  
Temporal Resolution ◽  
Elevation Gradients ◽  
East Central Europe ◽  
East Central ◽  
East Europe ◽  
The Holocene ◽  
South East Europe ◽  
Precipitation Δ18o

The region comprising of East Central Europe, South East Europe and Turkey contributed to the SISAL (Speleothem Isotopes Synthesis and AnaLysis) global database with stable carbon and oxygen isotope time-series from 18 speleothems from 14 caves. The currently available oldest record from the studied region is the ABA-2 flowstone record (Abaliget Cave; Hungary) reaching back to MIS 6. The temporal distribution of the compiled 18 records from the region points out a ~20 kyr-long period, centering around 100 ka BP, lacking speleothem stable isotope data. The regional subset of SISAL_v1 records displays a continuous coverage for the past ~90 kyr for both δ13C and δ18O, with a mean temporal resolution of ~12 yr for the Holocene, and >50 yr for the pre-Holocene period. The highest temporal resolution both for the Holocene and the pre-Holocene was achieved in the So-1 record (Sofular Cave; Turkey). The relationship between modern day precipitation δ18O (amount weighted annual and winter season mean values; 1961–2017) and climatological parameters was evaluated. The strong positive correlation found in East Central Europe reinforces the link between modern day precipitation δ18O, temperature and large-scale circulation (North Atlantic Oscillation) expected to be preserved in the speleothem δ18O record; while a negative relationship was documented between precipitation amount and oxygen isotope compositions in South East Europe. Variations of δ13C values are primarily interpreted as reflecting dry/wet periods across the region. Elevation gradients from three non-overlapping periods of the last ~5 kyr indicated elevation gradients around −0.26‰ per 100 m−1 for calcite δ18O.

scholarly journals Speleothem Stable Isotope Records from Eastern Europe & Turkey

2018 ◽  
Author(s):  
Zoltán Kern ◽  
Attila Demény ◽  
István Gábor Hatvani
Keyword(s):  
Stable Isotope ◽  
Eastern Europe ◽  
Oxygen Isotope ◽  
Temporal Resolution ◽  
Isotope Composition ◽  
Precipitation Amount ◽  
Temporal Distribution ◽  
Elevation Gradients ◽  
The Holocene ◽  
Carbon And Oxygen Isotope

The region of Eastern Europe & Turkey contributed to the SISAL (Speleothem Isotopes Synthesis and AnaLysis) global database with stable carbon- and oxygen isotope time-series from 18 entities from 14 cave systems. The currently available oldest record from this region is the ABA-2 flowstone record (Abaliget Cave; Hungary) reaching back to MIS 6. The temporal distribution of the compiled 18 entities points out a ~20-kyr-long period, centering around 100 ka, lacking speleothem stable isotope record in the region. The regional subset of SISAL_v1 records displays a continuous coverage for the past ~90 kyr for both δ18O and δ13C, with a mean temporal resolution of ~12 yr for the Holocene, and >50 yr for the pre-Holocene period. The highest temporal resolution both for the Holocene and the pre-Holocene was achieved in the So-1 record (Sofular Cave; Turkey). Assessing the data, an important split was found regarding the climatic interpretation of speleothem δ18O. While the oxygen isotope composition of more continental formations is thought to reflect mainly temperature variations and changes in moisture transport trajectories, it may strongly reflect fluctuations of precipitation amount in the southern part of the region. Variations of δ13C primarily interpreted as humidity changes reflecting dry/wet periods across the region. Elevation gradients from three non-overlapping time periods from the region - for the last 5kyr - indicated systematically prevailing elevational gradients around -0.26‰ 100m-1 in δ18O. The regional comparison of SISAL_v1 speleothem δ18O and the temporal distribution of coarsely crystalline cryogenic cave carbonate occurrences back to 45ka does not appear to confirm the finding that occurrence of the latter coincides with the warming from stadial to interstadial conditions.

Introduction

Urban History ◽  
2012 ◽  
Vol 40 (1) ◽  
pp. 28-31
Author(s):  
MARKIAN PROKOPOVYCH
Keyword(s):  
World War Ii ◽  
Eastern Europe ◽  
Intellectual History ◽  
Central Europe ◽  
Special Section ◽  
Historical Context ◽  
East Central Europe ◽  
East Europe ◽  
South East Europe ◽  
History Of

Eastern Europe has recently received much attention from scholars irrespective of diverse focus and specialization, and the special section of this distinguished journal is yet another proof that the region remains an extraordinarily interesting place for research and analysis. Scholarly interests have, however, often been related to the emergence, establishment and eventual demise of state socialism in this heterogeneous place, the horrors of World War II and the profound transformations that swept through its many old-new countries during recent decades. The predominance of political, social and intellectual history, as well as sociology and political science, and scholarly interpretations of the condition of modernity in Eastern Europe come therefore as little surprise. This methodological apparatus at hand, significant aspects of the region's development during the nineteenth and twentieth centuries have sometimes been overlooked, while others appeared teleological. Within the traditions of both Western and Eastern European academia, the region has until recently been perceived as having followed a very distinct, special path to modernity characterized in a variety of ways as arrested development, Sonderweg and backwardness. At the same time, the profound change that occurred in these diverse territories as part of a European and in fact global process of modernization during the nineteenth and the early twentieth centuries has often not been given its true significance in relation to its later historical development. An array of recent post-colonialist responses that have fundamentally reshaped the history of the modern ‘Third World’ have touched Eastern Europe only in passing, Hence, an occasional intellectual indecisiveness as to how to analyse the region's development in a greater historical context, as is immediately evident in the diversity of names ascribed to its supposedly different geographical areas – Eastern Europe, East Central Europe, Central Europe, Mitteleuropa and South-East Europe, to name but a few – each with their own political and ideological bias.

Considering the Sub-Regional Cooperation in East-Central Europe – Some Conclusions on Integrating and Disintegrating Tendencies in the Sub-Regional Dialogue

2016 ◽  
Author(s):  
Jacek Wieclawski
Keyword(s):  
Central Europe ◽  
Regional Cooperation ◽  
The European Union ◽  
East Central Europe ◽  
East Central ◽  
New Ideas ◽  
Ukrainian Crisis ◽  
Regional Interests ◽  
Visegrad Group ◽  
East Central European

This article discusses the problems of the sub-regional cooperation in East-Central Europe. It formulates the general conclusions and examines the specific case of the Visegrad Group as the most advanced example of this cooperation. The article identifies the integrating and disintegrating tendencies that have so far accompanied the sub-regional dialogue in East-Central Europe. Yet it claims that the disintegrating impulses prevail over the integrating impulses. EastCentral Europe remains diversified and it has not developed a single platform of the sub-regional dialogue. The common experience of the communist period gives way to the growing difference of the sub-regional interests and the ability of the East-Central European members to coordinate their positions in the European Union is limited. The Visegrad Group is no exception in this regard despite its rich agenda of social and cultural contacts. The Russian-Ukrainian conflict confirms a deep divergence of interests among the Visegrad states that seems more important for the future of the Visegrad cooperation than the recent attempts to mark the Visegrad unity in the European refugee crisis. Finally, the Ukrainian crisis and the strengthening of the NATO’s “Eastern flank” may contribute to some new ideas of the sub-regional cooperation in East-Central Europe, to include the Polish-Baltic rapprochement or the closer dialogue between Poland and Romania. Full text available at: https://doi.org/10.22215/rera.v10i1.251  

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