Holocene Climate variability in the Western Mediterranean Sea: an integrated oceanic and atmospheric perspective
Programa de Doctorat en Ciències de la Terra [eng] The Mediterranean region is very sensitive to modern climate variability. Located in a temperate subtropical climatic zone and surrounded almost entirely by large continental masses, the Mediterranean region climate and oceanography are largely cont...
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Universitat de Barcelona
2023
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ftubarcelona:oai:www.tdx.cat:10803/687833 2023-12-24T10:24:23+01:00 Holocene Climate variability in the Western Mediterranean Sea: an integrated oceanic and atmospheric perspective Català i Caparrós, Albert Cacho Lascorz, Isabel Pena González, Leopoldo David Universitat de Barcelona. Departament de Dinàmica de la Terra i de l'Oceà 2023-03-07T07:46:13Z 216 p. application/pdf http://hdl.handle.net/10803/687833 eng eng Universitat de Barcelona http://hdl.handle.net/10803/687833 L'accés als continguts d'aquesta tesi queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons: http://creativecommons.org/licenses/by-nc-nd/4.0/ http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess TDX (Tesis Doctorals en Xarxa) Paleoclimatologia Paleoclimatología Paleoclimatology Paleoceanografia Paleoceanografía Paleoceanography Holocè Holoceno Holocene Isòtops radioactius en geologia Isótopos radiactivos en geología Radioisotopes in geology Ciències Experimentals i Matemàtiques 55 info:eu-repo/semantics/doctoralThesis info:eu-repo/semantics/publishedVersion 2023 ftubarcelona 2023-11-30T06:33:45Z Programa de Doctorat en Ciències de la Terra [eng] The Mediterranean region is very sensitive to modern climate variability. Located in a temperate subtropical climatic zone and surrounded almost entirely by large continental masses, the Mediterranean region climate and oceanography are largely controlled by the climatic variability of the subtropical and subpolar atmospheric systems. The western Mediterranean Sea exchanges seawater through the Strait of Gibraltar with the Atlantic Ocean, where inflowing surface waters from the Atlantic Ocean enter this region. In contrast, Mediterranean waters outflow into the Atlantic at depth, a net exchange of heat and salts that is very sensitive to present and past climatic changes. This thesis presents a new approach to studying and understanding past natural climatic variability of the Mediterranean region by analysing the changes in the ocean and the atmosphere during the Holocene. This thesis aims to improve our understanding of the mechanisms and climatic/oceanographic responses that have modulated the southern Iberian Peninsula climate during the last 11.700 years. In addition, relevant methodological advances in «state-of-the-art» geochemical tools are implemented here to study past hydrological changes and, for the first time, these methods are validated using a modern time series record in the Alboran Sea. This thesis has been built on four main key points: First, a new high-resolution deglacial and Holocene Sea Surface Temperature (SST) reconstruction is presented for the Alboran Sea (western Mediterranean), based on Mg/Ca ratios measured in the planktonic foraminifera Globigerina bulloides. This new SST record is evaluated by comparison with other Mg/Ca–SST records and previously published alkenone–SST reconstructions from the same region. The comparison shows a high degree of coherence between the different Mg/Ca–SST records but strong discrepancies compared to the alkenone– SST records. We argue that these discrepancies arise from differences in the ... Doctoral or Postdoctoral Thesis Planktonic foraminifera Universitat de Barcelona: Theses and Dissertations Online (TDX) |
institution |
Open Polar |
collection |
Universitat de Barcelona: Theses and Dissertations Online (TDX) |
op_collection_id |
ftubarcelona |
language |
English |
topic |
Paleoclimatologia Paleoclimatología Paleoclimatology Paleoceanografia Paleoceanografía Paleoceanography Holocè Holoceno Holocene Isòtops radioactius en geologia Isótopos radiactivos en geología Radioisotopes in geology Ciències Experimentals i Matemàtiques 55 |
spellingShingle |
Paleoclimatologia Paleoclimatología Paleoclimatology Paleoceanografia Paleoceanografía Paleoceanography Holocè Holoceno Holocene Isòtops radioactius en geologia Isótopos radiactivos en geología Radioisotopes in geology Ciències Experimentals i Matemàtiques 55 Català i Caparrós, Albert Holocene Climate variability in the Western Mediterranean Sea: an integrated oceanic and atmospheric perspective |
topic_facet |
Paleoclimatologia Paleoclimatología Paleoclimatology Paleoceanografia Paleoceanografía Paleoceanography Holocè Holoceno Holocene Isòtops radioactius en geologia Isótopos radiactivos en geología Radioisotopes in geology Ciències Experimentals i Matemàtiques 55 |
description |
Programa de Doctorat en Ciències de la Terra [eng] The Mediterranean region is very sensitive to modern climate variability. Located in a temperate subtropical climatic zone and surrounded almost entirely by large continental masses, the Mediterranean region climate and oceanography are largely controlled by the climatic variability of the subtropical and subpolar atmospheric systems. The western Mediterranean Sea exchanges seawater through the Strait of Gibraltar with the Atlantic Ocean, where inflowing surface waters from the Atlantic Ocean enter this region. In contrast, Mediterranean waters outflow into the Atlantic at depth, a net exchange of heat and salts that is very sensitive to present and past climatic changes. This thesis presents a new approach to studying and understanding past natural climatic variability of the Mediterranean region by analysing the changes in the ocean and the atmosphere during the Holocene. This thesis aims to improve our understanding of the mechanisms and climatic/oceanographic responses that have modulated the southern Iberian Peninsula climate during the last 11.700 years. In addition, relevant methodological advances in «state-of-the-art» geochemical tools are implemented here to study past hydrological changes and, for the first time, these methods are validated using a modern time series record in the Alboran Sea. This thesis has been built on four main key points: First, a new high-resolution deglacial and Holocene Sea Surface Temperature (SST) reconstruction is presented for the Alboran Sea (western Mediterranean), based on Mg/Ca ratios measured in the planktonic foraminifera Globigerina bulloides. This new SST record is evaluated by comparison with other Mg/Ca–SST records and previously published alkenone–SST reconstructions from the same region. The comparison shows a high degree of coherence between the different Mg/Ca–SST records but strong discrepancies compared to the alkenone– SST records. We argue that these discrepancies arise from differences in the ... |
author2 |
Cacho Lascorz, Isabel Pena González, Leopoldo David Universitat de Barcelona. Departament de Dinàmica de la Terra i de l'Oceà |
format |
Doctoral or Postdoctoral Thesis |
author |
Català i Caparrós, Albert |
author_facet |
Català i Caparrós, Albert |
author_sort |
Català i Caparrós, Albert |
title |
Holocene Climate variability in the Western Mediterranean Sea: an integrated oceanic and atmospheric perspective |
title_short |
Holocene Climate variability in the Western Mediterranean Sea: an integrated oceanic and atmospheric perspective |
title_full |
Holocene Climate variability in the Western Mediterranean Sea: an integrated oceanic and atmospheric perspective |
title_fullStr |
Holocene Climate variability in the Western Mediterranean Sea: an integrated oceanic and atmospheric perspective |
title_full_unstemmed |
Holocene Climate variability in the Western Mediterranean Sea: an integrated oceanic and atmospheric perspective |
title_sort |
holocene climate variability in the western mediterranean sea: an integrated oceanic and atmospheric perspective |
publisher |
Universitat de Barcelona |
publishDate |
2023 |
url |
http://hdl.handle.net/10803/687833 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
TDX (Tesis Doctorals en Xarxa) |
op_relation |
http://hdl.handle.net/10803/687833 |
op_rights |
L'accés als continguts d'aquesta tesi queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons: http://creativecommons.org/licenses/by-nc-nd/4.0/ http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
_version_ |
1786199097508626432 |