Lippold, Jörg; Gutjahr, Marcus; Blaser, Patrick; Guiral, Javier E Escartin; de Carvalho, Maria Luiza; Mulitza, Stefan; Christl, Marcus; Wombacher, Frank; Böhm, Evelyn; Antz, Benny; Cartapanis, Olivier; Vogel, Hendrik; Jaccard, Samuel L (2016): Radionuclides, Nd isotopes and biogenic Opal in Atlanic Ocean sediments [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.863978, Supplement to: Lippold, Jörg; Gutjahr, Marcus; Blaser, Patrick; Christner, Emanuel; de Carvalho, Maria Luiza; Mulitza, Stefan; Christl, Marcus; Wombacher, Frank; Böhm, Evelyn; Antz, Benny; Cartapanis, Olivier; Vogel, Hendrik; Jaccard, Samuel L (2016): Deep water provenance and dynamics of the (de)glacial Atlantic meridional overturning circulation. Earth and Planetary Science Letters, 445, 68-78, https://doi.org/10.1016/j.epsl.2016.04.013
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Reconstructing past modes of ocean circulation is an essential task in paleoclimatology and paleoceanography. To this end, we combine two sedimentary proxies, Nd isotopes (epsilon-Nd) and the 231Pa/230Th ratio, both of which are not directly involved in the global carbon cycle, but allow the reconstruction of water mass provenance and provide information about the past strength of overturning circulation, respectively. In this study, combined 231Pa/230Th and epsilon-Nd down-core profiles from six Atlantic Ocean sediment cores are presented. The data set is complemented by the two available combined data sets from the literature. From this we derive a comprehensive picture of spatial and temporal patterns and the dynamic changes of the Atlantic Meridional Overturning Circulation over the past ~25 ka. Our results provide evidence for a consistent pattern of glacial/stadial advances of Southern Sourced Water along with a northward circulation mode for all cores in the deeper (>3000 m) Atlantic. Results from shallower core sites support an active overturning cell of shoaled Northern Sourced Water during the LGM and the subsequent deglaciation. Furthermore, we report evidence for a short-lived period of intensified AMOC in the early Holocene.
Related to:
Bonneau, M-C; Vergnaud-Grazzini, Colette; Berger, Wolfgang H (1980): Stable isotope fractionation and differential dissolution in recent planktonic foraminifera from Pacific box-cores. Oceanologica Acta, 3(3), 377-381
Cortese, Giuseppe; Abelmann, Andrea; Gersonde, Rainer (2004): A glacial warm water anomaly in the subantarctic Atlantic Ocean, near the Agulhas Retroflection. Earth and Planetary Science Letters, 222(3-4), 767-778, https://doi.org/10.1016/j.epsl.2004.03.029
Gutjahr, Marcus; Frank, Martin; Lippold, Jörg; Halliday, Alex N (2014): Peak Last Glacial weathering intensity on the North American continent recorded by the authigenic Hf isotope composition of North Atlantic deep-sea sediments. Quaternary Science Reviews, 99, 97-111, https://doi.org/10.1016/j.quascirev.2014.06.022
Lippold, Jörg; Gutjahr, Marcus; Blaser, Patrick; Christner, Emanuel; de Carvalho, Maria Luiza; Mulitza, Stefan; Christl, Marcus; Wombacher, Frank; Böhm, Evelyn; Antz, Benny; Cartapanis, Olivier; Vogel, Hendrik; Jaccard, Samuel L (2017): Corrigendum to “Deep water provenance and dynamics of the (de)glacial Atlantic meridional overturning circulation” [Earth Planet. Sci. Lett. 445 (2016) 68–78]. Earth and Planetary Science Letters, 458, 444-448, https://doi.org/10.1016/j.epsl.2016.11.005
Naafs, Bernhard David A; Hefter, Jens; Gruetzner, Jens; Stein, Ruediger (2013): Warming of surface waters in the mid-latitude North Atlantic during Heinrich Events. Paleoceanography, 28(1), 153-163, https://doi.org/10.1029/2012PA002354
Rühlemann, Carsten; Mulitza, Stefan; Lohmann, Gerrit; Paul, André; Prange, Matthias; Wefer, Gerold (2004): Intermediate depth warming in the tropical Atlantic related to weakened thermohaline circulation: Combining paleoclimate and modeling data for the last deglaciation. Paleoceanography, 19(1), PA1025, https://doi.org/10.1029/2003PA000948
Vidal, Laurence; Schneider, Ralph R; Marchal, Olivier; Bickert, Torsten; Stocker, Thomas F; Wefer, Gerold (1999): Link between the North and South Atlantic during the Heinrich events of the last galcial period. Climate Dynamics, 15(12), 909-919, https://doi.org/10.1007/s003820050321
Vogel, Hendrik; Meyer-Jacob, Carsten; Thöle, Lena; Lippold, Jörg; Jaccard, Samuel L (2016): Quantification of biogenic silica by means of Fourier transform infrared spectroscopy (FTIRS) in marine sediments. Limnology and Oceanography-Methods, https://doi.org/10.1002/lom3.10129
Project(s):
Coverage:
Median Latitude: 1.195318 * Median Longitude: -33.228681 * South-bound Latitude: -40.936400 * West-bound Longitude: -72.900000 * North-bound Latitude: 41.000023 * East-bound Longitude: 9.894100
Date/Time Start: 1991-05-15T00:00:00 * Date/Time End: 1997-12-22T22:45:00
Minimum DEPTH, sediment/rock: -0.11 m * Maximum DEPTH, sediment/rock: 5.80 m
Event(s):
177-1089A * Latitude: -40.936400 * Longitude: 9.894100 * Date/Time Start: 1997-12-19T16:15:00 * Date/Time End: 1997-12-21T13:15:00 * Elevation: -4619.3 m * Penetration: 216.3 m * Recovery: 149.64 m * Location: South Atlantic Ocean * Campaign: Leg177 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 23 cores; 216.3 m cored; 0 m drilled; 69.2 % recovery
177-1089B * Latitude: -40.936400 * Longitude: 9.894100 * Date/Time Start: 1997-12-22T13:16:00 * Date/Time End: 1997-12-22T22:45:00 * Elevation: -4623.8 m * Penetration: 264.9 m * Recovery: 246.62 m * Location: South Atlantic Ocean * Campaign: Leg177 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 29 cores; 264.9 m cored; 0 m drilled; 93.1 % recovery
306-U1313B * Latitude: 41.000023 * Longitude: -32.957300 * Elevation: -3413.5 m * Recovery: 306.54 m * Campaign: Exp306 (North Atlantic Climate 2) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 32 cores; 300.4 m cored; 102 % recovered; 2 m drilled; 302.4 m penetrated
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2315 data points
Download Data
View dataset as HTML (shows only first 2000 rows)