(Table 1) Age determination of sediment core MD99-2343
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| Autores principales: | , , , , , , , , , , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
2005
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| _version_ | 1867171827775700992 |
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| author | Sierro, Francisco Javier Hodell, David A Curtis, Jason H Flores, José-Abel Reguera, Maria Isabel Colmenero-Hidalgo, Elena Bárcena, María Angeles Grimalt, Joan O Cacho, Isabel Frigola, Jaime Canals, Miquel |
| author_facet | Sierro, Francisco Javier Hodell, David A Curtis, Jason H Flores, José-Abel Reguera, Maria Isabel Colmenero-Hidalgo, Elena Bárcena, María Angeles Grimalt, Joan O Cacho, Isabel Frigola, Jaime Canals, Miquel |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Down-core samples of planktonic and benthic foraminifera were analyzed for oxygen and carbon isotopes in International Marine Past Global Changes Study (IMAGES) core MD99-2343 in order to study the interactions between climate change in the Northern Hemisphere and the western Mediterranean thermohaline circulation at times of Heinrich events (HE). Our results confirm the antiphase correlation between enhanced North Atlantic Deep Water formation and low ventilation in the Mediterranean. However, this study reveals that this antiphase relationship in deepwater formation between the North Atlantic and Mediterranean was interrupted during times of HE when the injection of large volumes of water from melting icebergs reached the entrance to the Mediterranean. These events, which lasted less than 1000 years, are represented by pronounced decreases in both planktonic d18O and benthic d13C signals. Lower salinities of Mediterranean surface water resulted in a slowdown of western Mediterranean deepwater overturn even though cold sea surface temperatures and drier climate should have resulted in enhanced deepwater formation. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_837083 |
| institution | PANGAEA |
| language | en |
| publishDate | 2005 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1) Age determination of sediment core MD99-2343 Sierro, Francisco Javier Hodell, David A Curtis, Jason H Flores, José-Abel Reguera, Maria Isabel Colmenero-Hidalgo, Elena Bárcena, María Angeles Grimalt, Joan O Cacho, Isabel Frigola, Jaime Canals, Miquel 98; Age, 14C AMS; Age, comment; Age, dated; Age, dated, standard deviation; Calendar age; CALYPSO; Calypso Corer; DEPTH, sediment/rock; IMAGES V; Marion Dufresne (1995); MD114; MD99-2343; North Minorca Down-core samples of planktonic and benthic foraminifera were analyzed for oxygen and carbon isotopes in International Marine Past Global Changes Study (IMAGES) core MD99-2343 in order to study the interactions between climate change in the Northern Hemisphere and the western Mediterranean thermohaline circulation at times of Heinrich events (HE). Our results confirm the antiphase correlation between enhanced North Atlantic Deep Water formation and low ventilation in the Mediterranean. However, this study reveals that this antiphase relationship in deepwater formation between the North Atlantic and Mediterranean was interrupted during times of HE when the injection of large volumes of water from melting icebergs reached the entrance to the Mediterranean. These events, which lasted less than 1000 years, are represented by pronounced decreases in both planktonic d18O and benthic d13C signals. Lower salinities of Mediterranean surface water resulted in a slowdown of western Mediterranean deepwater overturn even though cold sea surface temperatures and drier climate should have resulted in enhanced deepwater formation. |
| title | (Table 1) Age determination of sediment core MD99-2343 |
| topic | 98; Age, 14C AMS; Age, comment; Age, dated; Age, dated, standard deviation; Calendar age; CALYPSO; Calypso Corer; DEPTH, sediment/rock; IMAGES V; Marion Dufresne (1995); MD114; MD99-2343; North Minorca |
| url | https://doi.org/10.1594/PANGAEA.837083 |