2024-03-28T14:36:24Zhttps://gredos.usal.es/oai/requestoai:gredos.usal.es:10366/194122022-02-07T14:45:54Zcom_10366_4128com_10366_4055com_10366_3946com_10366_3823col_10366_4129
Impact of iceberg melting on Mediterranean thermohalinecirculation during Heinrich events
Sierro Sánchez, Francisco Javier
Hodell, David A.
Curtis, Jason H.
Flores Villarejo, José Abel
Reguera García, María Isabel
Colmenero Hidalgo, Elena
Bárcena Pernía, María Ángeles
Grimalt, Joan O.
Cacho Lascorz, Isabel
Frigola Ferrer, Jaime
Canals, Miquel
Paleoceanografía
Cambio climático
Circulación oceánica
Mediterráneo
Paleoceanography
Climatic changes
Ocean circulation
Mediterranean Sea
En este artículo se reconocen varios eventos que ponen en evidencia la entrada en el Mediterráneo de agua procedente de la fusión de icebergs en el último período glacial y se analiza el impacto de dichos eventos en la circulación profunda del Mediterráneo
Down-core samples of planktonic and benthic foraminifera were analyzed for oxygen and carbon isotopesin International Marine Past Global Changes Study (IMAGES) core MD99-2343 in order to study theinteractions between climate change in the Northern Hemisphere and the western Mediterranean thermohalinecirculation at times of Heinrich events (HE). Our results confirm the antiphase correlation between enhancedNorth Atlantic Deep Water formation and low ventilation in the Mediterranean. However, this study reveals thatthis antiphase relationship in deepwater formation between the North Atlantic and Mediterranean wasinterrupted during times of HE when the injection of large volumes of water from melting icebergs reached theentrance to the Mediterranean. These events, which lasted less than 1000 years, are represented by pronounceddecreases in both planktonic d18O and benthic d13C signals. Lower salinities of Mediterranean surface waterresulted in a slowdown of western Mediterranean deepwater overturn even though cold sea surface temperaturesand drier climate should have resulted in enhanced deepwater formation.
2009-01-19
2009-10-07
2009-10-07
2005-06-29
info:eu-repo/semantics/article
info:eu-repo/semantics/article
Sierro, F. J., et al. (2005). Impact of iceberg melting on Mediterranean thermohaline circulation during Heinrich events. "Paleoceanography", 20, PA2019
http://hdl.handle.net/10366/19412
http://hdl.handle.net/10366/19412
eng
Adobe Acrobat
https://creativecommons.org/licenses/by-nc-nd/3.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivs 3.0 Unported
Mediterráneo
American Geophysical Union (Washington, Estados Unidos)