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001-es BibID:BIBFORM080855
Első szerző:Haliuc, Aritina
Cím:Palaeohydrological changes during the mid and late Holocene in the Carpathian area, central-eastern Europe / Haliuc Aritina, Veres Daniel, Brauer Achim, Hubay Katalin, Hutchinson Simon M., Begy Robert, Braun Mihaly
Megjegyzések:Multi-proxy, high-resolution analyses (lithological, geochemical, environmental magnetism) anchored by 2214Cdates, of a 5.53 m long sediment core from Lake Ighiel (Romanian Carpathians, central-eastern Europe) allowedthe reconstruction of key local, catchment-lacustrine dynamics and an appraisal of palaeohydrological andpalaeoclimatic gradients acting regionally over the last 6000 years. Thefirst sedimentological phase of the recordfrom 6030 to 4200 cal yr BP is characterised by low productivity and high detrital input indicating surface runoffprocesses due to enhanced rainfall. This interpretation is in agreement with other hydrological reconstructionsreporting increased precipitation also in CE Europe, NE Mediterranean and also inferred summer and winter lat-itudinal temperature gradients (LTG) (as defined by Davis and Brewer, 2009), showing a strong connectivity be-tween basin-lacustrine dynamics and the establishment of the dominant, Atlantic atmospheric circulationpattern in the area. The lacustrine system was more stable between 4200 and 2500 cal yr BP when clastic inputsdiminished and biological productivity increased. During this interval, the coherence of Lake Ighiel's multi-century detrital events, identified in a range of proxy-data (albeit different in frequency and magnitude), withflood activity in central Europe (the Alps) suggests a common moisture forcing (Atlantic and periodically Medi-terraneaninfluences). Incontrast, different reconstructionsfrom the NEMediterraneanindicate a distinct NW-SEhydro-climatic gradient. A more complex and variable trend is depicted in Lake Ighiel sedimentation during thelast ~2500 years showing a variable detrital trend likely reflecting an intriguing hydrological pattern which is inagreement with intervals of increased aridity phases during a generally moister period. Comparing our sedimen-tological results with published pollen records from the nearby area clearly indicates anthropogenic imprintsduring the Dacian-Roman Period and especially from the Middle Ages towards the present. The ~6000-yearlong sedimentary record of Lake Ighiel contributes to our understanding of mid and late Holocenepalaeohydrological changes in the Carpathians and highlights the importance of latitudinal gradients in drivinghydrological variability in continental Europe.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Global And Planetary Change. - 152 (2017), p. 99-114. -
További szerzők:Veres Dániel Brauer, Achim Hubay Katalin (1985-) (biológus, környezetkutató) Hutchinson, Simon M. Begy, Robert Braun Mihály (1966-) (vegyész, analitikus)
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