Orbital and suborbital temperature variability in the central Mediterranean across the Pliocene/Pleistocene transition.
A high-resolution record of central Mediterranean Sea Surface Temperatures (SSTs) based on the alkenone UK'37 index and planktic δ18O values for the surface-dweller G. ruber has been reconstructed across the Pliocene/Pleistocene transition at Monte San Nicola (Sicily), reference area for the GS...
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2024-01-01
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| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0310684 |
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| author | Elena Zanola Teresa Rodrigues Sergio Bonomo Patrizia Ferretti Eliana Fornaciari Agata Di Stefano Alessandro Incarbona Nereo Preto Isabella Raffi Luca Capraro |
| author_facet | Elena Zanola Teresa Rodrigues Sergio Bonomo Patrizia Ferretti Eliana Fornaciari Agata Di Stefano Alessandro Incarbona Nereo Preto Isabella Raffi Luca Capraro |
| author_sort | Elena Zanola |
| collection | DOAJ |
| description | A high-resolution record of central Mediterranean Sea Surface Temperatures (SSTs) based on the alkenone UK'37 index and planktic δ18O values for the surface-dweller G. ruber has been reconstructed across the Pliocene/Pleistocene transition at Monte San Nicola (Sicily), reference area for the GSSP (Global Boundary Stratotype Section and Point) of the Gelasian Stage. Spectral analyses indicate that the SST record is predominantly paced by a cyclicity in the ~47 kyr time domain, consistent with the obliquity driven glacial-interglacial variability that is expected to dominate in the interval of relevance. In addition, two suborbital periodicities in the ~5 kyr and ~8 kyr time domains provide a pervasive spectral signal that proves to be especially strong during the MIS (Marine Isotope Stage) 100 glacial, at the inception of the Northern Hemisphere Glaciation. This high frequency climatic instability, a prominent feature of the early Gelasian, might reflect episodic events of massive disruption of the Atlantic Meridional Overturning Circulation with increased production of cold, low-salinity water masses in the North Atlantic. Alternatively, it may be interpreted as the resonance (i.e., harmonics) of the low-latitude precessional forcing in mid-latitude regions. Although the driving mechanisms of these processes remain largely unconstrained, our study emphasizes the role of the central Mediterranean as the main reference for high-resolution paleoclimatic studies in the Neogene and the Quaternary. |
| format | Article |
| id | doaj-art-49a895c753014624b7dbabd2015844fa |
| institution | Kabale University |
| issn | 1932-6203 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj-art-49a895c753014624b7dbabd2015844fa2025-01-08T05:32:34ZengPublic Library of Science (PLoS)PLoS ONE1932-62032024-01-011912e031068410.1371/journal.pone.0310684Orbital and suborbital temperature variability in the central Mediterranean across the Pliocene/Pleistocene transition.Elena ZanolaTeresa RodriguesSergio BonomoPatrizia FerrettiEliana FornaciariAgata Di StefanoAlessandro IncarbonaNereo PretoIsabella RaffiLuca CapraroA high-resolution record of central Mediterranean Sea Surface Temperatures (SSTs) based on the alkenone UK'37 index and planktic δ18O values for the surface-dweller G. ruber has been reconstructed across the Pliocene/Pleistocene transition at Monte San Nicola (Sicily), reference area for the GSSP (Global Boundary Stratotype Section and Point) of the Gelasian Stage. Spectral analyses indicate that the SST record is predominantly paced by a cyclicity in the ~47 kyr time domain, consistent with the obliquity driven glacial-interglacial variability that is expected to dominate in the interval of relevance. In addition, two suborbital periodicities in the ~5 kyr and ~8 kyr time domains provide a pervasive spectral signal that proves to be especially strong during the MIS (Marine Isotope Stage) 100 glacial, at the inception of the Northern Hemisphere Glaciation. This high frequency climatic instability, a prominent feature of the early Gelasian, might reflect episodic events of massive disruption of the Atlantic Meridional Overturning Circulation with increased production of cold, low-salinity water masses in the North Atlantic. Alternatively, it may be interpreted as the resonance (i.e., harmonics) of the low-latitude precessional forcing in mid-latitude regions. Although the driving mechanisms of these processes remain largely unconstrained, our study emphasizes the role of the central Mediterranean as the main reference for high-resolution paleoclimatic studies in the Neogene and the Quaternary.https://doi.org/10.1371/journal.pone.0310684 |
| spellingShingle | Elena Zanola Teresa Rodrigues Sergio Bonomo Patrizia Ferretti Eliana Fornaciari Agata Di Stefano Alessandro Incarbona Nereo Preto Isabella Raffi Luca Capraro Orbital and suborbital temperature variability in the central Mediterranean across the Pliocene/Pleistocene transition. PLoS ONE |
| title | Orbital and suborbital temperature variability in the central Mediterranean across the Pliocene/Pleistocene transition. |
| title_full | Orbital and suborbital temperature variability in the central Mediterranean across the Pliocene/Pleistocene transition. |
| title_fullStr | Orbital and suborbital temperature variability in the central Mediterranean across the Pliocene/Pleistocene transition. |
| title_full_unstemmed | Orbital and suborbital temperature variability in the central Mediterranean across the Pliocene/Pleistocene transition. |
| title_short | Orbital and suborbital temperature variability in the central Mediterranean across the Pliocene/Pleistocene transition. |
| title_sort | orbital and suborbital temperature variability in the central mediterranean across the pliocene pleistocene transition |
| url | https://doi.org/10.1371/journal.pone.0310684 |
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