Deglacial Variability of Antarctic Intermediate Water Penetration into the North Atlantic from Authigenic Neodymium Isotope Ratios
نویسندگان
چکیده
This Article is brought to you for free and open access by the Ocean, Earth & Atmospheric Sciences at ODU Digital Commons. It has been accepted for inclusion in OEAS Faculty Publications by an authorized administrator of ODU Digital Commons. For more information, please contact [email protected]. Repository Citation Xie, Ruifang C.; Marcantonio, Franco; and Schmidt, Matthew W., "Deglacial Variability of Antarctic Intermediate Water Penetration into the North Atlantic from Authigenic Neodymium Isotope Ratios" (2012). OEAS Faculty Publications. 210. http://digitalcommons.odu.edu/oeas_fac_pubs/210
منابع مشابه
Deglacial variability in the surface return flow of the Atlantic meridional overturning circulation
[1] Benthic foraminiferal Cd/Ca from a Florida Current sediment core documents the history of the northward penetration of southern source waters within the surface return flow of the Atlantic meridional overturning circulation (AMOC). Cd seawater estimates (CdW) indicate that intermediate-depth southern source waters crossed the equator and contributed to the Florida Current during the Bølling...
متن کاملImpact of abrupt deglacial climate change on tropical Atlantic subsurface temperatures.
Both instrumental data analyses and coupled ocean-atmosphere models indicate that Atlantic meridional overturning circulation (AMOC) variability is tightly linked to abrupt tropical North Atlantic (TNA) climate change through both atmospheric and oceanic processes. Although a slowdown of AMOC results in an atmospheric-induced surface cooling in the entire TNA, the subsurface experiences an even...
متن کاملSouthern Ocean source of 14C-depleted carbon in the North Pacific Ocean during the last deglaciation
During the last deglaciation, atmospheric carbon dioxide concentrations rose at the same time that the 114C of that CO2 fell. This has been attributed to the release of 14C-depleted carbon dioxide from the deep ocean1, possibly vented through the Southern Ocean2–5. Recently, a sediment record from the eastern North Pacific Ocean spanning the last deglaciation was interpreted to reflect transpor...
متن کاملIntensification and variability of ocean thermohaline circulation through the last deglaciation
Neodymium isotope ratios in the authigenic ferromanganese oxide component in a southeastern Atlantic core reveal a history of the global overturning circulation intensity through the last deglaciation. From a minimum during the Last Glacial Maximum (LGM), North Atlantic Deep Water (NADW) began to strengthen between 18 and 17 kyr cal. BP, approximately 2000–3000 years before the Bølling warming....
متن کاملSynchronous deglacial overturning and water mass source changes.
Understanding changes in ocean circulation during the last deglaciation is crucial to unraveling the dynamics of glacial-interglacial and millennial climate shifts. We used neodymium isotope measurements on postdepositional iron-manganese oxide coatings precipitated on planktonic foraminifera to reconstruct changes in the bottom water source of the deep western North Atlantic at the Bermuda Ris...
متن کامل