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Detrital events and hydroclimate variability in the Romanian Carpathians during the mid-to-late Holocene

Detrital events and hydroclimate variability in the Romanian Carpathians during the mid-to-late Holocene
Detrital events and hydroclimate variability in the Romanian Carpathians during the mid-to-late Holocene

The Romanian Carpathians are located at the confluence of three major atmospheric pressure fields: the North Atlantic, the Mediterranean and the Siberian. Despite its importance for understanding past human impact and climate change, high-resolution palaeoenvironmental reconstructions of Holocene hydroclimate variability, and in particular records of extreme precipitation events in the area, are rare. Here we present a 7500-year-long high-resolution record of past climatic change and human impact recorded in a peatbog from the Southern Carpathians, integrating palynological, geochemical and sedimentological proxies. Natural climate fluctuations appear to be dominant until 4500 years before present (yr BP), followed by increasing importance of human impact. Sedimentological and geochemical analyses document regular minerogenic deposition within the bog, linked to periods of high precipitation. Such minerogenic depositional events began 4000 yr BP, with increased depositional rates during the Medieval Warm Period (MWP), the Little Ice Age (LIA) and during periods of societal upheaval (e.g. the Roman conquest of Dacia). The timing of minerogenic events appears to indicate a teleconnection between major shifts in North Atlantic Oscillation (NAO) and hydroclimate variability in southeastern Europe, with increased minerogenic deposition correlating to low NAO index values. By linking the minerogenic deposition to precipitation variability, we state that this link persists throughout the mid-to-late Holocene.

Carpathians, Holocene, Hydroclimate, North Atlantic Oscillation, Peatbog, Pollen, Romania
0277-3791
78-95
Longman, Jack
26a3c4e3-79d6-4102-9708-a5b02b97121d
Ersek, Vasile
d6247272-dbeb-4449-9eca-bb1a4a75a9ca
Veres, Daniel
67b7de50-1043-4bfb-a5df-bc87feeefc63
Salzmann, Ulrich
b797b592-d128-40b0-ab3d-855d119ebeb6
Longman, Jack
26a3c4e3-79d6-4102-9708-a5b02b97121d
Ersek, Vasile
d6247272-dbeb-4449-9eca-bb1a4a75a9ca
Veres, Daniel
67b7de50-1043-4bfb-a5df-bc87feeefc63
Salzmann, Ulrich
b797b592-d128-40b0-ab3d-855d119ebeb6

Longman, Jack, Ersek, Vasile, Veres, Daniel and Salzmann, Ulrich (2017) Detrital events and hydroclimate variability in the Romanian Carpathians during the mid-to-late Holocene. Quaternary Science Reviews, 167, 78-95. (doi:10.1016/j.quascirev.2017.04.029).

Record type: Article

Abstract

The Romanian Carpathians are located at the confluence of three major atmospheric pressure fields: the North Atlantic, the Mediterranean and the Siberian. Despite its importance for understanding past human impact and climate change, high-resolution palaeoenvironmental reconstructions of Holocene hydroclimate variability, and in particular records of extreme precipitation events in the area, are rare. Here we present a 7500-year-long high-resolution record of past climatic change and human impact recorded in a peatbog from the Southern Carpathians, integrating palynological, geochemical and sedimentological proxies. Natural climate fluctuations appear to be dominant until 4500 years before present (yr BP), followed by increasing importance of human impact. Sedimentological and geochemical analyses document regular minerogenic deposition within the bog, linked to periods of high precipitation. Such minerogenic depositional events began 4000 yr BP, with increased depositional rates during the Medieval Warm Period (MWP), the Little Ice Age (LIA) and during periods of societal upheaval (e.g. the Roman conquest of Dacia). The timing of minerogenic events appears to indicate a teleconnection between major shifts in North Atlantic Oscillation (NAO) and hydroclimate variability in southeastern Europe, with increased minerogenic deposition correlating to low NAO index values. By linking the minerogenic deposition to precipitation variability, we state that this link persists throughout the mid-to-late Holocene.

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Accepted/In Press date: 28 April 2017
Published date: 1 July 2017
Keywords: Carpathians, Holocene, Hydroclimate, North Atlantic Oscillation, Peatbog, Pollen, Romania

Identifiers

Local EPrints ID: 415159
URI: http://eprints.soton.ac.uk/id/eprint/415159
ISSN: 0277-3791
PURE UUID: 7b915e9c-d2f9-4230-8f5d-3e0204e6ec18

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Date deposited: 02 Nov 2017 17:30
Last modified: 08 Jan 2022 02:19

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Contributors

Author: Jack Longman
Author: Vasile Ersek
Author: Daniel Veres
Author: Ulrich Salzmann

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