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  Speleothem δ13C record suggests enhanced spring/summer drought in south-eastern Spain between 9.7 and 7.8 ka – A circum-Western Mediterranean anomaly?

Budsky, A., Scholz, D., Wassenburg, J. A., Mertz-Kraus, R., Spoetl, C., Riechelmann, D. F. C., et al. (2019). Speleothem δ13C record suggests enhanced spring/summer drought in south-eastern Spain between 9.7 and 7.8 ka – A circum-Western Mediterranean anomaly? The Holocene, 29(7), 1113-1133. doi:10.1177/0959683619838021.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-CA66-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-CA68-4
Genre: Journal Article

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 Creators:
Budsky, Alexander1, Author
Scholz, Denis1, Author
Wassenburg, Jasper A.1, Author
Mertz-Kraus, Regina1, Author
Spoetl, Christoph1, Author
Riechelmann, Dana F. C.1, Author
Gibert, Luis1, Author
Jochum, Klaus Peter2, Author              
Andreae, Meinrat O.3, Author              
Affiliations:
1external, ou_persistent22              
2Climate Geochemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_2237635              
3Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826290              

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 Abstract: South-eastern Spain is one of the driest regions in Europe and thus, prone to drought. Terrestrial climate records covering the late Glacial and Holocene from this area are sparse. Here, we present a flowstone record from Cueva Victoria, south-eastern Spain, which covers the late Glacial (15 ka) to the mid-Holocene (7 ka) including the Younger Dryas (YD). Between the onset of the Bølling/Allerød (B/A) and the early Holocene, flowstone δ18O values progressively decrease in accordance with sea-surface temperatures in the Alboran Sea, indicating an increase in precipitation in south-eastern Spain and a supra-regional signal of North Atlantic temperature change. At the same time, decreasing δ13C values suggest progressively increasing precipitation and vegetation density. This trend is interrupted by both colder and drier conditions during the YD. Between 9.7 ± 0.3 and 7.8 ± 0.2 ka, a large positive excursion of the δ13C values indicates a strong reduction in vegetation density, probably as a consequence of very dry spring/summer conditions. In combination with the continuously low speleothem δ18O values and a nearly unchanged growth rate, this suggests increased seasonality (i.e. drier spring/summer conditions, but not a strong reduction in annual precipitation). This is consistent with several other climate records from the Western Mediterranean region, showing that the Western Mediterranean realm (Spain, Italy) experienced pronounced spring/summer drought during this time interval. Interestingly, the timing of this dry period coincided with the African Humid Period. This may be part of a teleconnection with the North African Monsoon via the Hadley cell circulation.

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Language(s): eng - English
 Dates: 2019
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: ISI: 000475684800002
DOI: 10.1177/0959683619838021
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Title: The Holocene
Source Genre: Journal
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Publ. Info: Los Angeles, CA : Sage Publications
Pages: - Volume / Issue: 29 (7) Sequence Number: - Start / End Page: 1113 - 1133 Identifier: ISSN: 1477-0911
ISSN: 0959-6836
CoNE: https://pure.mpg.de/cone/journals/resource/954925578075_1