Παλαιοκλιματολογικές έρευνες στο νότιο Αιγαίο Πέλαγος
The Aegean Sea has become an important area of the Mediterranean for paleoclimatic reconstruction as it combines rapid response and sensitivity to climate change of both large and local scale, recorded in the hydrological characteristics and finally in the sedimentary record of each marine basin. Ge...
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University of Patras
2020
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Online Access: | http://hdl.handle.net/10442/hedi/48898 https://doi.org/10.12681/eadd/48898 |
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fthedi:oai:10442/48898 2024-09-15T18:31:07+00:00 Παλαιοκλιματολογικές έρευνες στο νότιο Αιγαίο Πέλαγος Palaeoclimatic research in the South Aegean Sea Kozanoglou, Aikaterini Κοζάνογλου, Αικατερίνη 2020 http://hdl.handle.net/10442/hedi/48898 https://doi.org/10.12681/eadd/48898 gre gre University of Patras Πανεπιστήμιο Πατρών doi:10.12681/eadd/48898 http://hdl.handle.net/10442/hedi/48898 Πλαγκτονικά τρηματοφόρα Αιγαίο πέλαγος Σαπρόπηλος Planktonic foraminifera Aegean sea Sapropels Γεωεπιστήμες και Επιστήμες Περιβάλλοντος Φυσικές Επιστήμες Ωκεανογραφία Earth and Related Environmental Sciences Natural Sciences Oceanography PhD Thesis 2020 fthedi https://doi.org/10.12681/eadd/48898 2024-07-09T14:23:02Z The Aegean Sea has become an important area of the Mediterranean for paleoclimatic reconstruction as it combines rapid response and sensitivity to climate change of both large and local scale, recorded in the hydrological characteristics and finally in the sedimentary record of each marine basin. Geographical location and complex geomorphology of the separate sea basins in the Aegean, affect the characteristics and the circulation of each marine water mass hosted by the different sea basins. This dissertation gathers geochemical and micropaleontological data from sediments from a small marine basin, the Tilos-Symi basin, located in the South Aegean Sea. The location and geomorphology of this basin, with the specific characteristics of a relatively small, isolated, coastal area of moderate depth, provide the advantages of a "natural laboratory", enabling the investigation of the impact of climatic events on the biogeochemical parameters of this marine ecosystem. The study mainly focuses on the Holocene and the deposition of the most recent sapropel and is based on very high resolution analysis of micropaleontoological data, combined with analyses of geochemical parameters. The sedimentary record is derived from a gravity core 381 cm long, in which the layers of sapropel S1 extend between 130-185 cm (6.19-10.16 ka BP). Two layers of sapropel were identified, including an interruption on the horizon 159.5-164 cm (8.21-8.54 ka BP). In addition to four AMS radiocarbon dates, the dating of the Z2 ash horizon from the Minoan eruption of the Volcano of Santorini was used as another check point. Organic carbon and nitrogen values in sapropel sediments exceed twice the corresponding values in background sediments. The Corg/N ratio is an important tool for the determination of the source of organic mater that may be mainly marine or mainly terrestrial. The stable isotopes δ15N and δ13Corg in sediments in combination with the above ratio lead to safer conclusions about organic matter produced in the ecosystem during ... Doctoral or Postdoctoral Thesis Planktonic foraminifera National Archive of PhD Theses (National Documentation Centre Greece) |
institution |
Open Polar |
collection |
National Archive of PhD Theses (National Documentation Centre Greece) |
op_collection_id |
fthedi |
language |
Greek |
topic |
Πλαγκτονικά τρηματοφόρα Αιγαίο πέλαγος Σαπρόπηλος Planktonic foraminifera Aegean sea Sapropels Γεωεπιστήμες και Επιστήμες Περιβάλλοντος Φυσικές Επιστήμες Ωκεανογραφία Earth and Related Environmental Sciences Natural Sciences Oceanography |
spellingShingle |
Πλαγκτονικά τρηματοφόρα Αιγαίο πέλαγος Σαπρόπηλος Planktonic foraminifera Aegean sea Sapropels Γεωεπιστήμες και Επιστήμες Περιβάλλοντος Φυσικές Επιστήμες Ωκεανογραφία Earth and Related Environmental Sciences Natural Sciences Oceanography Kozanoglou, Aikaterini Κοζάνογλου, Αικατερίνη Παλαιοκλιματολογικές έρευνες στο νότιο Αιγαίο Πέλαγος |
topic_facet |
Πλαγκτονικά τρηματοφόρα Αιγαίο πέλαγος Σαπρόπηλος Planktonic foraminifera Aegean sea Sapropels Γεωεπιστήμες και Επιστήμες Περιβάλλοντος Φυσικές Επιστήμες Ωκεανογραφία Earth and Related Environmental Sciences Natural Sciences Oceanography |
description |
The Aegean Sea has become an important area of the Mediterranean for paleoclimatic reconstruction as it combines rapid response and sensitivity to climate change of both large and local scale, recorded in the hydrological characteristics and finally in the sedimentary record of each marine basin. Geographical location and complex geomorphology of the separate sea basins in the Aegean, affect the characteristics and the circulation of each marine water mass hosted by the different sea basins. This dissertation gathers geochemical and micropaleontological data from sediments from a small marine basin, the Tilos-Symi basin, located in the South Aegean Sea. The location and geomorphology of this basin, with the specific characteristics of a relatively small, isolated, coastal area of moderate depth, provide the advantages of a "natural laboratory", enabling the investigation of the impact of climatic events on the biogeochemical parameters of this marine ecosystem. The study mainly focuses on the Holocene and the deposition of the most recent sapropel and is based on very high resolution analysis of micropaleontoological data, combined with analyses of geochemical parameters. The sedimentary record is derived from a gravity core 381 cm long, in which the layers of sapropel S1 extend between 130-185 cm (6.19-10.16 ka BP). Two layers of sapropel were identified, including an interruption on the horizon 159.5-164 cm (8.21-8.54 ka BP). In addition to four AMS radiocarbon dates, the dating of the Z2 ash horizon from the Minoan eruption of the Volcano of Santorini was used as another check point. Organic carbon and nitrogen values in sapropel sediments exceed twice the corresponding values in background sediments. The Corg/N ratio is an important tool for the determination of the source of organic mater that may be mainly marine or mainly terrestrial. The stable isotopes δ15N and δ13Corg in sediments in combination with the above ratio lead to safer conclusions about organic matter produced in the ecosystem during ... |
format |
Doctoral or Postdoctoral Thesis |
author |
Kozanoglou, Aikaterini Κοζάνογλου, Αικατερίνη |
author_facet |
Kozanoglou, Aikaterini Κοζάνογλου, Αικατερίνη |
author_sort |
Kozanoglou, Aikaterini |
title |
Παλαιοκλιματολογικές έρευνες στο νότιο Αιγαίο Πέλαγος |
title_short |
Παλαιοκλιματολογικές έρευνες στο νότιο Αιγαίο Πέλαγος |
title_full |
Παλαιοκλιματολογικές έρευνες στο νότιο Αιγαίο Πέλαγος |
title_fullStr |
Παλαιοκλιματολογικές έρευνες στο νότιο Αιγαίο Πέλαγος |
title_full_unstemmed |
Παλαιοκλιματολογικές έρευνες στο νότιο Αιγαίο Πέλαγος |
title_sort |
παλαιοκλιματολογικές έρευνες στο νότιο αιγαίο πέλαγος |
publisher |
University of Patras |
publishDate |
2020 |
url |
http://hdl.handle.net/10442/hedi/48898 https://doi.org/10.12681/eadd/48898 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
doi:10.12681/eadd/48898 http://hdl.handle.net/10442/hedi/48898 |
op_doi |
https://doi.org/10.12681/eadd/48898 |
_version_ |
1810472733286334464 |