Multiproxy ecosystem response of abrupt holocene climatic changes in the northeastern Mediterranean sedimentary archive and hydrologic regime
Aspects of paleoclimatic and paleoceanographic evolution of the north Aegean Sea through the Holocene are revealed by the study of quantitative variations in planktonic foraminiferal, pteropodal, and palynomorph assemblages; the isotopic composition of planktonic foraminifera; and hydrographic-relat...
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ftnkunivathens:oai:lib.uoa.gr:uoadl:2993546 2024-02-11T10:08:04+01:00 Multiproxy ecosystem response of abrupt holocene climatic changes in the northeastern Mediterranean sedimentary archive and hydrologic regime Giamali, C. Koskeridou, E. Antonarakou, A. Ioakim, C. Kontakiotis, G. Karageorgis, A.P. Roussakis, G. Karakitsios, V. 2019-01-01 https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:2993546 Αγγλικά English eng uoadl:2993546 https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:2993546 scientific_publication_article Επιστημονική δημοσίευση - Άρθρο Περιοδικού Scientific publication - Journal Article 2019 ftnkunivathens 2024-01-18T19:12:24Z Aspects of paleoclimatic and paleoceanographic evolution of the north Aegean Sea through the Holocene are revealed by the study of quantitative variations in planktonic foraminiferal, pteropodal, and palynomorph assemblages; the isotopic composition of planktonic foraminifera; and hydrographic-related indices, extracted from two high-sedimentation rate cores from the North Aegean Trough. Focusing on the last ∼10 cal ka BP, the current Holocene subdivision (Greenlandian, Northgrippian, and Meghalayan) confirms the traditional understanding of an evolution from wetter (Greenlandian) to gradually drier (Northgrippian and Meghalayan) climatic conditions and further highlights the role of changing seasonality during this time. The most warm and humid phase corresponds to the time of the sapropel S1 deposition (9.6-6.1 cal ka BP). The Holocene climatic instability of the study area is further supported by six episodes of brief cooling (North Aegean cooling; NAEGC6-NAEGC1) centered at 9.30, 8.05, 7.05, 4.55, 3.55, and 2.05 cal ka BP, reflected by significant faunal changes and oxygen isotope enrichments. These cold/arid events are coeval with equivalent cooling events that have been described in different basins of the Mediterranean Sea, while signal similarities with equivalent changes in the intensity of the Siberian high suggest a climatic link between the studied area and the high-latitude areas. © University of Washington. Published by Cambridge University Press, 2019. Article in Journal/Newspaper Planktonic foraminifera Pergamos - Library and Information Center of National and Kapodistrian University of Athens |
institution |
Open Polar |
collection |
Pergamos - Library and Information Center of National and Kapodistrian University of Athens |
op_collection_id |
ftnkunivathens |
language |
English |
description |
Aspects of paleoclimatic and paleoceanographic evolution of the north Aegean Sea through the Holocene are revealed by the study of quantitative variations in planktonic foraminiferal, pteropodal, and palynomorph assemblages; the isotopic composition of planktonic foraminifera; and hydrographic-related indices, extracted from two high-sedimentation rate cores from the North Aegean Trough. Focusing on the last ∼10 cal ka BP, the current Holocene subdivision (Greenlandian, Northgrippian, and Meghalayan) confirms the traditional understanding of an evolution from wetter (Greenlandian) to gradually drier (Northgrippian and Meghalayan) climatic conditions and further highlights the role of changing seasonality during this time. The most warm and humid phase corresponds to the time of the sapropel S1 deposition (9.6-6.1 cal ka BP). The Holocene climatic instability of the study area is further supported by six episodes of brief cooling (North Aegean cooling; NAEGC6-NAEGC1) centered at 9.30, 8.05, 7.05, 4.55, 3.55, and 2.05 cal ka BP, reflected by significant faunal changes and oxygen isotope enrichments. These cold/arid events are coeval with equivalent cooling events that have been described in different basins of the Mediterranean Sea, while signal similarities with equivalent changes in the intensity of the Siberian high suggest a climatic link between the studied area and the high-latitude areas. © University of Washington. Published by Cambridge University Press, 2019. |
format |
Article in Journal/Newspaper |
author |
Giamali, C. Koskeridou, E. Antonarakou, A. Ioakim, C. Kontakiotis, G. Karageorgis, A.P. Roussakis, G. Karakitsios, V. |
spellingShingle |
Giamali, C. Koskeridou, E. Antonarakou, A. Ioakim, C. Kontakiotis, G. Karageorgis, A.P. Roussakis, G. Karakitsios, V. Multiproxy ecosystem response of abrupt holocene climatic changes in the northeastern Mediterranean sedimentary archive and hydrologic regime |
author_facet |
Giamali, C. Koskeridou, E. Antonarakou, A. Ioakim, C. Kontakiotis, G. Karageorgis, A.P. Roussakis, G. Karakitsios, V. |
author_sort |
Giamali, C. |
title |
Multiproxy ecosystem response of abrupt holocene climatic changes in the northeastern Mediterranean sedimentary archive and hydrologic regime |
title_short |
Multiproxy ecosystem response of abrupt holocene climatic changes in the northeastern Mediterranean sedimentary archive and hydrologic regime |
title_full |
Multiproxy ecosystem response of abrupt holocene climatic changes in the northeastern Mediterranean sedimentary archive and hydrologic regime |
title_fullStr |
Multiproxy ecosystem response of abrupt holocene climatic changes in the northeastern Mediterranean sedimentary archive and hydrologic regime |
title_full_unstemmed |
Multiproxy ecosystem response of abrupt holocene climatic changes in the northeastern Mediterranean sedimentary archive and hydrologic regime |
title_sort |
multiproxy ecosystem response of abrupt holocene climatic changes in the northeastern mediterranean sedimentary archive and hydrologic regime |
publishDate |
2019 |
url |
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:2993546 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
uoadl:2993546 https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:2993546 |
_version_ |
1790607013554683904 |