Universität zu Köln

Longman, Jack ORCID: 0000-0002-2725-2617, Veres, Daniel ORCID: 0000-0003-3932-577X, Ersek, Vasile ORCID: 0000-0001-9730-0007, Salzmann, Ulrich ORCID: 0000-0001-5598-5327, Hubay, Katalin, Bormann, Marc, Wennrich, Volker ORCID: 0000-0003-3617-1963 and Schaebitz, Frank ORCID: 0000-0003-3879-9308 (2017). Periodic input of dust over the Eastern Carpathians during the Holocene linked with Saharan desertification and human impact. Clim. Past., 13 (7). S. 897 - 918. GOTTINGEN: COPERNICUS GESELLSCHAFT MBH. ISSN 1814-9332

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Abstract

Reconstructions of dust flux have been used to produce valuable global records of changes in atmospheric circulation and aridity. These studies have highlighted the importance of atmospheric dust in marine and terrestrial biogeochemistry and nutrient cycling. By investigating a 10 800-year-long paleoclimate archive from the Eastern Carpathians (Romania) we present the first peat record of changing dust deposition over the Holocene for the CarpathianBalkan region. Using qualitative (X-ray fluorescence (XRF) core scanning) and quantitative inductively coupled plasma optical emission spectrometer(ICP-OES) measurements of lithogenic (K, Si, Ti) elements, we identify 10 periods of major dust deposition between 9500-9200, 8400-8100, 7720-7250, 6350-5950, 5450-5050, 4130-3770, 34502850, 2000-1450, 800-620, and 60 cal yr BP to present. In addition, we used testate amoeba assemblages preserved within the peat to infer local palaeohydroclimatic conditions. Our record highlights several discrepancies between eastern and western European dust depositional records and the impact of highly complex hydrological regimes in the Carpathian region. Since 6100 cal yr BP, we find that the geochemical indicators of dust flux have become uncoupled from the local hydrology. This coincides with the appearance of millennial-scale cycles in the dust input and changes in geochemical composition of dust. We suggest that this is indicative of a shift in dust provenance from local-regional (likely loess-related) to distal (Saharan) sources, which coin-cide with the end of the African Humid Period and the onset of Saharan desertification.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Longman, Jack UNSPECIFIED orcid.org/0000-0002-2725-2617 UNSPECIFIED Veres, Daniel UNSPECIFIED orcid.org/0000-0003-3932-577X UNSPECIFIED Ersek, Vasile UNSPECIFIED orcid.org/0000-0001-9730-0007 UNSPECIFIED Salzmann, Ulrich UNSPECIFIED orcid.org/0000-0001-5598-5327 UNSPECIFIED Hubay, Katalin UNSPECIFIED UNSPECIFIED UNSPECIFIED Bormann, Marc UNSPECIFIED UNSPECIFIED UNSPECIFIED Wennrich, Volker UNSPECIFIED orcid.org/0000-0003-3617-1963 UNSPECIFIED Schaebitz, Frank UNSPECIFIED orcid.org/0000-0003-3879-9308 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-224939
DOI:	10.5194/cp-13-897-2017
Journal or Publication Title:	Clim. Past.
Volume:	13
Number:	7
Page Range:	S. 897 - 918
Date:	2017
Publisher:	COPERNICUS GESELLSCHAFT MBH
Place of Publication:	GOTTINGEN
ISSN:	1814-9332
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language INTERTROPICAL CONVERGENCE ZONE; CLIMATE VARIABILITY; ROMANIAN CARPATHIANS; AFRICAN DUST; DESERT DUST; PEAT BOG; MEDITERRANEAN CLIMATE; CULTURAL RESPONSES; SOLAR VARIABILITY; CIOMADUL VOLCANO Multiple languages Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/22493