A5069408694- Geology and Paleoclimatology Research
- Marine and environmental studies
- Pleistocene-Era Hominins and Archaeology
- Ancient and Medieval Archaeology Studies
- Archaeology and ancient environmental studies
- Geological Formations and Processes Exploration
- Cryospheric studies and observations
- Geological formations and processes
- Isotope Analysis in Ecology
- Methane Hydrates and Related Phenomena
- Geological and Geochemical Analysis
- Aeolian processes and effects
- Landslides and related hazards
- Tree-ring climate responses
- Image Processing and 3D Reconstruction
- Karst Systems and Hydrogeology
- Maritime and Coastal Archaeology
- Arctic and Antarctic ice dynamics
- Soil and Environmental Studies
- earthquake and tectonic studies
- Geomagnetism and Paleomagnetism Studies
- Peatlands and Wetlands Ecology
- Plant Ecology and Soil Science
- Geological and Geophysical Studies Worldwide
- Historical and Archaeological Studies
Emil Racovita Institute of Speleology
2016-2025
Romanian Academy
2016-2025
Valahia University of Targoviste
2024
University of Hull
2023
Romanian Institute of Science and Technology
2022
Babeș-Bolyai University
2012-2021
Ludovika University of Public Service
2021
RWTH Aachen University
2021
Karlsruhe Institute of Technology
2020
Uppsala University
2020
Abstract. The deep polar ice cores provide reference records commonly employed in global correlation of past climate events. However, temporal divergences reaching up to several thousand years (ka) exist between over the last climatic cycle. In this context, we are hereby introducing Antarctic Ice Core Chronology 2012 (AICC2012), a new and coherent timescale developed for four cores, namely Vostok, EPICA Dome C (EDC), Dronning Maud Land (EDML) Talos (TALDICE), alongside Greenlandic NGRIP...
Abstract The Les Echets sediment sequence has recently been the subject of a high‐resolution, multi‐proxy study which revealed shifts in lake productivity linked to Greenland stadials and interstadials over last 40 ka (Wohlfarth et al. , 2008 . Rapid ecosystem response abrupt climate changes during glacial period western Europe, 40–16 ka. Geology 36 : 407–410). Here we present new elemental data for this as acquired using an X‐ray fluorescence core scanning system provides situ continuous,...
Abstract. An accurate and coherent chronological framework is essential for the interpretation of climatic environmental records obtained from deep polar ice cores. Until now, one common core age scale had been developed based on an inverse dating method (Datice), combining glaciological modelling with absolute stratigraphic markers between 4 cores covering last 50 ka (thousands years before present) (Lemieux-Dudon et al., 2010). In this paper, together companion paper Veres al. (2013), we...
Paleoenvironmental reconstructions on a (supra-)regional scale have gained attention in Quaternary sciences during the last decades. In terrestrial realms, loess deposits and especially intercalations of buried soils, so called loess-paleosol sequences (LPS) are important archives to unravel response e.g. climatic fluctuations reconstruct paleoenvironments Pleistocene. The analysis LPS requires knowledge several key factors, such as distribution aeolian sediments, their location relative...
The Last Interglacial (LIG) represents an invaluable case study to investigate the response of components Earth system global warming. However, scarcity absolute age constraints in most archives leads extensive use various stratigraphic alignments different reference chronologies. This feature sets limitations accuracy assignment climatic sequence events across globe during LIG. Here, we review strengths and methods that are commonly used date or develop chronologies for time span (∼140–100...
Two speleothem stable isotope records from East-Central Europe demonstrate that Greenland Stadial 12 (GS12) and GS10-at 44.3-43.3 40.8-40.2 ka-were prominent intervals of cold arid conditions. GS12, GS11, GS10 are coeval with a regional pattern culturally (near-)sterile layers within Europe's diachronous archeologic transition Neanderthals to modern human Aurignacian. Sterile GS12 precede the Aurignacian throughout middle upper Danube region. In some northern Iberian Peninsula, such GS11...
Loess-palaeosol sequences are valuable archives of past environmental changes. Although regional palaeoclimatic trends and conditions in Southeastern Europe have been inferred from loess sequences, large scale forcing mechanisms responsible for their formation yet to be determined. is a climatically sensitive region, existing under the strong influence both Mediterranean continental climates. Establishment spatial temporal evolution interaction these climatic areas essential understand...
Abstract In September 2016, the annual meeting of International Union for Quaternary Research’s Loess and Pedostratigraphy Focus Group, traditionally referred to as a LoessFest, met in Eau Claire, Wisconsin, USA. The 2016 LoessFest focused on “thin” loess deposits transportation surfaces. This included 75 registered participants from 10 countries. Almost half were outside United States, 18 students. review is introduction special issue Research that originated presentations discussions at...
Abstract Aim The forest steppe of the Transylvanian Plain is a landscape exceptionally diverse steppe‐like and semi‐natural grasslands. Is this vegetation remnant once continuous temperate extensively cleared by humans, or has area, since last glacial, always been steppe? Understanding processes that drive grassland formation important because effective management biome critical to conservation European cultural landscape. Location Lake Stiucii, north‐western Romania, central‐eastern Europe....
Understanding the past dynamics of large-scale atmospheric systems is crucial for our knowledge palaeoclimate conditions in Europe. Southeastern Europe currently lies at border between Atlantic, Mediterranean, and continental climate zones. Past changes relative influence associated must have been recorded region's palaeoarchives. By comparing high-resolution grain-size, environmental magnetic geochemical data from two loess-palaeosol sequences Lower Danube Basin with other Eurasian...
To reconstruct changes in vegetation, temperature, and sediment geochemistry through the last 6.5 cal ka BP, Subcarpathian belt of Eastern Carpathians (Romania), pollen, branched glycerol dialkyl tetraethers (brGDGTs) X-ray fluorescence analyses have been integrated. Pollen brGDGTs (a bacterial lipid biomarker proxy) are used as paleothermometers for reconstructing mean annual air temperature (MAAT) above freezing (MAF), respectively. Both proxies show roughly consistent records. The highest...
Abstract Loess profiles along the Danube River provide a record of long-term Quaternary dust (loess) deposition in central-eastern Europe. Here, Sr–Nd isotopic data from four loess-palaeosol (47 samples) spanning last two-glacial-interglacial cycles are presented. The compositions generated by this study compared with bedrock and sedimentary samples Europe North Africa to decipher sources sediment. results demonstrate that over 300 ka alluvial plains (which themselves sourced surrounding...
Research Article| May 01, 2008 Rapid ecosystem response to abrupt climate changes during the last glacial period in western Europe, 40–16 ka Barbara Wohlfarth; Wohlfarth 1Department of Geology and Geochemistry, Stockholm University, 10691 Stockholm, Sweden Search for other works by this author on: GSW Google Scholar Daniel Veres; Veres 2Emil Racovita Speleological Institute, 400006 Cluj, Romania Linda Ampel; Ampel 3Department Physical Geography Quaternary Geology, Terri Lacourse; Lacourse...
The Campanian Ignimbrite (CI) volcanic eruption was the most explosive in Europe last 200,000 years. event coincided with onset of an extremely cold climatic phase known as Heinrich Event 4 (HE4) approximately 40,000 years ago. Their combined effect may have exacerbated severity climate through positive feedbacks across and possibly globally. CI is particular interest not only to investigate role volcanism on forcing palaeoenvironments, but also because its timing coincides arrival into...
Abstract. Here we present a speleothem isotope record (POM2) from Ascunsă Cave (Romania) that provides new data on past climate changes in the Carpathian–Balkan region 8.2 ka until present. This paper describes an approach to constrain effect of temperature calcite δ18O values stalagmite POM2 over course middle Holocene (6–4 ka), and across 3.2 rapid change events. Independent pollen reconstructions are used this purpose. The combines temperature-dependent fractionation rain water during...
Significance A detailed record of historical lead (Pb) pollution from a peat bog in Serbia provides unique view on the extent and timing Balkan mining metallurgy. Evidence earliest European environmental is followed by large-scale sustained increases amount anthropogenically derived Pb after 600 BCE, through Roman/Byzantine periods, into medieval period. Occasional evidence drops output reflects disruptive socioeconomic impact periods turmoil. Our data show trend significantly different to...
With one of the largest watersheds in Europe, draining complex geological terrains within Alps, Bohemian Massif, Carpathians, Dinarides, and Balkan Mountains, Danube River valley has long been linked to formation thick loess deposits, particularly Middle Lower basins. However, uncertainty over provenance loess-palaeosol sequences along impacts our understanding sediment generation mechanisms hinders interpretation paleoenvironmental proxies preserved loess. To date, most studies...