Holocene humidity changes in southern Iberia inferred from the geochemical signature of marine sediments
The Mediterranean region is particularly sensitive to global climate variability that critically reflects on its hydrological conditions. A recently published high resolution reconstruction of Holocene Sea Surface Temperature (SST) based on Globigerina bulloides Mg/Ca ratios, set the basis to explor...
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ftubarcepubl:oai:diposit.ub.edu:2445/201928 2024-02-11T10:06:36+01:00 Holocene humidity changes in southern Iberia inferred from the geochemical signature of marine sediments Català, Albert Pena González, Leopoldo David Garcia Solsona, Ester Paredes, Eduardo Frigola Ferrer, Jaime I. Sanchez-Vidal, Anna Calafat Frau, Antoni Cacho Lascorz, Isabel 2023-09 1 p. application/pdf http://hdl.handle.net/2445/201928 eng eng Reproducció de resum publicat a: https://icp14.w.uib.no/program/book-of-abstracts/ Resum del pòster presentat a: 14th International Conference on Paleoceanography (ICP14). 29 August-2 September 2022. Bergen. (Poster Abstracts Topic 1: Climate and Ocean Chemistry - P1-068) Comunicacions a congressos (Dinàmica de la Terra i de l'Oceà) http://hdl.handle.net/2445/201928 cc by-nc-nd (c) Pena González, Leopoldo David et al., 2023 http://creativecommons.org/licenses/by-nc-nd/3.0/es/ info:eu-repo/semantics/openAccess Paleoceanografia Sediments marins Mediterrània (Regió) Paleoceanography Marine sediments Mediterranean Region info:eu-repo/semantics/conferenceObject 2023 ftubarcepubl 2024-01-24T01:20:58Z The Mediterranean region is particularly sensitive to global climate variability that critically reflects on its hydrological conditions. A recently published high resolution reconstruction of Holocene Sea Surface Temperature (SST) based on Globigerina bulloides Mg/Ca ratios, set the basis to explore, within a warm climatic period, the impact of North Atlantic oceanographic conditions shaping the properties of the inflowing waters into the Mediterranean Sea. Here we go a step further in establishing the potential links between these oceanographical changes with the hydrological conditions on the southern Iberian Peninsula. This study combines XRF-core-scanner analyses with the radiogenic isotopes characterization (Sr, Nd and Pb) of the terrigenous fraction in core ALB-2 from the Alboran Sea. Results indicate that the most humid conditions developed during the early to middle Holocene with a transition towards drier conditions and colder SST that occurred by the late Holocene. The radiogenic Sr, Nd and Pb records do not show any covariance with the millennial scale oscillations shown in the Zr and K XRF records interpreted as humidity changes. This could suggest that inputs of African dust are not the main controlling factor in the XRF records. In contrast, the Sr isotope record shows a significant transition around the middle Holocene while SSTs show a cooling trend. For an accurate interpretation of that feature, this study also targets a novel approach by characterizing the radiogenic isotope composition of settling particles recovered by moored sediment traps under well characterized meteorological conditions. Conference Object North Atlantic Dipòsit Digital de la Universitat de Barcelona |
institution |
Open Polar |
collection |
Dipòsit Digital de la Universitat de Barcelona |
op_collection_id |
ftubarcepubl |
language |
English |
topic |
Paleoceanografia Sediments marins Mediterrània (Regió) Paleoceanography Marine sediments Mediterranean Region |
spellingShingle |
Paleoceanografia Sediments marins Mediterrània (Regió) Paleoceanography Marine sediments Mediterranean Region Català, Albert Pena González, Leopoldo David Garcia Solsona, Ester Paredes, Eduardo Frigola Ferrer, Jaime I. Sanchez-Vidal, Anna Calafat Frau, Antoni Cacho Lascorz, Isabel Holocene humidity changes in southern Iberia inferred from the geochemical signature of marine sediments |
topic_facet |
Paleoceanografia Sediments marins Mediterrània (Regió) Paleoceanography Marine sediments Mediterranean Region |
description |
The Mediterranean region is particularly sensitive to global climate variability that critically reflects on its hydrological conditions. A recently published high resolution reconstruction of Holocene Sea Surface Temperature (SST) based on Globigerina bulloides Mg/Ca ratios, set the basis to explore, within a warm climatic period, the impact of North Atlantic oceanographic conditions shaping the properties of the inflowing waters into the Mediterranean Sea. Here we go a step further in establishing the potential links between these oceanographical changes with the hydrological conditions on the southern Iberian Peninsula. This study combines XRF-core-scanner analyses with the radiogenic isotopes characterization (Sr, Nd and Pb) of the terrigenous fraction in core ALB-2 from the Alboran Sea. Results indicate that the most humid conditions developed during the early to middle Holocene with a transition towards drier conditions and colder SST that occurred by the late Holocene. The radiogenic Sr, Nd and Pb records do not show any covariance with the millennial scale oscillations shown in the Zr and K XRF records interpreted as humidity changes. This could suggest that inputs of African dust are not the main controlling factor in the XRF records. In contrast, the Sr isotope record shows a significant transition around the middle Holocene while SSTs show a cooling trend. For an accurate interpretation of that feature, this study also targets a novel approach by characterizing the radiogenic isotope composition of settling particles recovered by moored sediment traps under well characterized meteorological conditions. |
format |
Conference Object |
author |
Català, Albert Pena González, Leopoldo David Garcia Solsona, Ester Paredes, Eduardo Frigola Ferrer, Jaime I. Sanchez-Vidal, Anna Calafat Frau, Antoni Cacho Lascorz, Isabel |
author_facet |
Català, Albert Pena González, Leopoldo David Garcia Solsona, Ester Paredes, Eduardo Frigola Ferrer, Jaime I. Sanchez-Vidal, Anna Calafat Frau, Antoni Cacho Lascorz, Isabel |
author_sort |
Català, Albert |
title |
Holocene humidity changes in southern Iberia inferred from the geochemical signature of marine sediments |
title_short |
Holocene humidity changes in southern Iberia inferred from the geochemical signature of marine sediments |
title_full |
Holocene humidity changes in southern Iberia inferred from the geochemical signature of marine sediments |
title_fullStr |
Holocene humidity changes in southern Iberia inferred from the geochemical signature of marine sediments |
title_full_unstemmed |
Holocene humidity changes in southern Iberia inferred from the geochemical signature of marine sediments |
title_sort |
holocene humidity changes in southern iberia inferred from the geochemical signature of marine sediments |
publishDate |
2023 |
url |
http://hdl.handle.net/2445/201928 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Reproducció de resum publicat a: https://icp14.w.uib.no/program/book-of-abstracts/ Resum del pòster presentat a: 14th International Conference on Paleoceanography (ICP14). 29 August-2 September 2022. Bergen. (Poster Abstracts Topic 1: Climate and Ocean Chemistry - P1-068) Comunicacions a congressos (Dinàmica de la Terra i de l'Oceà) http://hdl.handle.net/2445/201928 |
op_rights |
cc by-nc-nd (c) Pena González, Leopoldo David et al., 2023 http://creativecommons.org/licenses/by-nc-nd/3.0/es/ info:eu-repo/semantics/openAccess |
_version_ |
1790604409190744064 |