Eastern Mediterranean hydroclimate over the late glacial and Holocene, reconstructed from the sediments of Nar lake, central Turkey, using stable isotopes and carbonate mineralogy
There is a lack of high-resolution records of hydroclimate variability in the Eastern Mediterranean from the late glacial and early Holocene. More knowledge of the speed of climate shifts and the degree to which they were synchronous with changes in the North Atlantic or elsewhere is required to und...
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ftunivplympearl:oai:pearl.plymouth.ac.uk:10026.1/3808 2024-05-19T07:44:40+00:00 Eastern Mediterranean hydroclimate over the late glacial and Holocene, reconstructed from the sediments of Nar lake, central Turkey, using stable isotopes and carbonate mineralogy Dean, JR Jones, MD Leng, MJ Noble, SR Metcalfe, SE Sloane, HJ Sahy, D Eastwood, WJ Roberts, CN 2015-09 162-174 application/pdf http://hdl.handle.net/10026.1/3808 https://doi.org/10.1016/j.quascirev.2015.07.023 en eng Elsevier BV ISSN:0277-3791 0277-3791 http://hdl.handle.net/10026.1/3808 doi:10.1016/j.quascirev.2015.07.023 24 months Oxygen and carbon isotopes Eastern Mediterranean Lake sediment Holocene Late glacial Mid Holocene Transition 9.3 ka event 8.2 ka event 4.2 ka event Late Bronze Age journal-article Article 2015 ftunivplympearl https://doi.org/10.1016/j.quascirev.2015.07.023 2024-05-01T00:07:16Z There is a lack of high-resolution records of hydroclimate variability in the Eastern Mediterranean from the late glacial and early Holocene. More knowledge of the speed of climate shifts and the degree to which they were synchronous with changes in the North Atlantic or elsewhere is required to understand better the controls on Eastern Mediterranean climate. Using endogenic carbonate from a sediment sequence from Nar Gölü, a maar lake in central Turkey, dated by varve counting and uranium-thorium methods, we present high-resolution (~25 years) oxygen (δ 18 O) and carbon isotope records, supported by carbonate mineralogy data, spanning the late glacial and Holocene. δ 18 O carbonate at Nar Gölü has been shown previously to be a strong proxy for regional water balance. After a dry period (i.e. evaporation far exceeding precipitation) in the Younger Dryas, the data show a transition into the relatively wetter early Holocene. In the early Holocene there are two drier periods that appear to peak at ~9.3ka and ~8.2ka, coincident with cooling 'events' seen in North Atlantic records. After this, and as seen in other records from the Eastern Mediterranean, there is a millennial-scale drying trend through the Mid Holocene Transition. The relatively dry late Holocene is punctuated by centennial-scale drought intervals, at the times of 4.2ka 'event' and Late Bronze Age societal 'collapse'. Overall, we show that central Turkey is drier when the North Atlantic is cooler, throughout this record and at multiple timescales, thought to be due to a weakening of the westerly storm track resulting from reduced cyclogenesis in the North Atlantic. However, some features, such as the Mid Holocene Transition and the fact the early Holocene dry episodes at Nar Gölü are of a longer duration than the more discrete 'events' seen in North Atlantic records, imply there are additional controls on Eastern Mediterranean hydroclimate. Article in Journal/Newspaper North Atlantic PEARL (Plymouth Electronic Archiv & ResearchLibrary, Plymouth University) Quaternary Science Reviews 124 162 174 |
institution |
Open Polar |
collection |
PEARL (Plymouth Electronic Archiv & ResearchLibrary, Plymouth University) |
op_collection_id |
ftunivplympearl |
language |
English |
topic |
Oxygen and carbon isotopes Eastern Mediterranean Lake sediment Holocene Late glacial Mid Holocene Transition 9.3 ka event 8.2 ka event 4.2 ka event Late Bronze Age |
spellingShingle |
Oxygen and carbon isotopes Eastern Mediterranean Lake sediment Holocene Late glacial Mid Holocene Transition 9.3 ka event 8.2 ka event 4.2 ka event Late Bronze Age Dean, JR Jones, MD Leng, MJ Noble, SR Metcalfe, SE Sloane, HJ Sahy, D Eastwood, WJ Roberts, CN Eastern Mediterranean hydroclimate over the late glacial and Holocene, reconstructed from the sediments of Nar lake, central Turkey, using stable isotopes and carbonate mineralogy |
topic_facet |
Oxygen and carbon isotopes Eastern Mediterranean Lake sediment Holocene Late glacial Mid Holocene Transition 9.3 ka event 8.2 ka event 4.2 ka event Late Bronze Age |
description |
There is a lack of high-resolution records of hydroclimate variability in the Eastern Mediterranean from the late glacial and early Holocene. More knowledge of the speed of climate shifts and the degree to which they were synchronous with changes in the North Atlantic or elsewhere is required to understand better the controls on Eastern Mediterranean climate. Using endogenic carbonate from a sediment sequence from Nar Gölü, a maar lake in central Turkey, dated by varve counting and uranium-thorium methods, we present high-resolution (~25 years) oxygen (δ 18 O) and carbon isotope records, supported by carbonate mineralogy data, spanning the late glacial and Holocene. δ 18 O carbonate at Nar Gölü has been shown previously to be a strong proxy for regional water balance. After a dry period (i.e. evaporation far exceeding precipitation) in the Younger Dryas, the data show a transition into the relatively wetter early Holocene. In the early Holocene there are two drier periods that appear to peak at ~9.3ka and ~8.2ka, coincident with cooling 'events' seen in North Atlantic records. After this, and as seen in other records from the Eastern Mediterranean, there is a millennial-scale drying trend through the Mid Holocene Transition. The relatively dry late Holocene is punctuated by centennial-scale drought intervals, at the times of 4.2ka 'event' and Late Bronze Age societal 'collapse'. Overall, we show that central Turkey is drier when the North Atlantic is cooler, throughout this record and at multiple timescales, thought to be due to a weakening of the westerly storm track resulting from reduced cyclogenesis in the North Atlantic. However, some features, such as the Mid Holocene Transition and the fact the early Holocene dry episodes at Nar Gölü are of a longer duration than the more discrete 'events' seen in North Atlantic records, imply there are additional controls on Eastern Mediterranean hydroclimate. |
format |
Article in Journal/Newspaper |
author |
Dean, JR Jones, MD Leng, MJ Noble, SR Metcalfe, SE Sloane, HJ Sahy, D Eastwood, WJ Roberts, CN |
author_facet |
Dean, JR Jones, MD Leng, MJ Noble, SR Metcalfe, SE Sloane, HJ Sahy, D Eastwood, WJ Roberts, CN |
author_sort |
Dean, JR |
title |
Eastern Mediterranean hydroclimate over the late glacial and Holocene, reconstructed from the sediments of Nar lake, central Turkey, using stable isotopes and carbonate mineralogy |
title_short |
Eastern Mediterranean hydroclimate over the late glacial and Holocene, reconstructed from the sediments of Nar lake, central Turkey, using stable isotopes and carbonate mineralogy |
title_full |
Eastern Mediterranean hydroclimate over the late glacial and Holocene, reconstructed from the sediments of Nar lake, central Turkey, using stable isotopes and carbonate mineralogy |
title_fullStr |
Eastern Mediterranean hydroclimate over the late glacial and Holocene, reconstructed from the sediments of Nar lake, central Turkey, using stable isotopes and carbonate mineralogy |
title_full_unstemmed |
Eastern Mediterranean hydroclimate over the late glacial and Holocene, reconstructed from the sediments of Nar lake, central Turkey, using stable isotopes and carbonate mineralogy |
title_sort |
eastern mediterranean hydroclimate over the late glacial and holocene, reconstructed from the sediments of nar lake, central turkey, using stable isotopes and carbonate mineralogy |
publisher |
Elsevier BV |
publishDate |
2015 |
url |
http://hdl.handle.net/10026.1/3808 https://doi.org/10.1016/j.quascirev.2015.07.023 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
ISSN:0277-3791 0277-3791 http://hdl.handle.net/10026.1/3808 doi:10.1016/j.quascirev.2015.07.023 |
op_rights |
24 months |
op_doi |
https://doi.org/10.1016/j.quascirev.2015.07.023 |
container_title |
Quaternary Science Reviews |
container_volume |
124 |
container_start_page |
162 |
op_container_end_page |
174 |
_version_ |
1799484516183572480 |