Wegwerth, Antje; Arz, Helge Wolfgang; Kaiser, Jerome; Winckler, Gisela; Lembke-Jene, Lester; Rigalleau, Vincent; Ruggieri, Nicoletta; Sadatzki, Henrik; Lamy, Frank (2025): Antarctic Circumpolar Current strength during the late Miocene from IODP Site 383-U1541 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.982861
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Published: 2025-07-18 • DOI registered: 2025-08-16
Abstract:
This dataset presents a record of the Antarctic Circumpolar Current (ACC) strength during the late Miocene from IODP Site 383-U1541 in the Central South Pacific. The drill cores were recovered during IODP 383 expedition "Dynamics of Pacific Antarctic Circumpolar Current (DYNAPACC)" with R/V JOIDES Resolution in 2019 (54° 12.756′ S, 125° 25.540′ W, 3,604 m water depth; Lamy et al., 2021; doi:10.14379/iodp.proc.383.2021). The ACC strength record represents an extension of the published 5.3 Ma old record of bottom current strength to 8 Ma (Lamy et al., 2024; doi:10.1038/s41586-024-07143-3) and bases on calibrated logarithmic count ratio of the XRF-scanned zirconium to rubidium (ln (Zr/Rb)).
Keyword(s):
Supplement to:
Wegwerth, Antje; Arz, Helge Wolfgang; Kaiser, Jerome; Winckler, Gisela; Lembke-Jene, Lester; Rigalleau, Vincent; Ruggieri, Nicoletta; Sadatzki, Henrik; Lamy, Frank (2025): South Pacific sea surface temperature and global ocean circulation changes since the late Miocene. Nature Communications, 16 (6593), https://doi.org/10.1038/s41467-025-62037-w
References:
Lamy, Frank; Winckler, Gisela; Alvarez Zarikian, Carlos A; Expedition 383 Scientists (2021): Volume 383: Dynamics of the Pacific Antarctic Circumpolar Current (DYNAPACC). Proceedings of the International Ocean Discovery Program, International Ocean Discovery Program, 383, https://doi.org/10.14379/iodp.proc.383.2021
Lamy, Frank; Winckler, Gisela; Arz, Helge Wolfgang; Farmer, Jesse R; Gottschalk, Julia; Lembke-Jene, Lester; Middleton, Jennifer L; van der Does, Michèlle; Tiedemann, Ralf; Alvarez Zarikian, Carlos A; Basak, Chandranath; Brombacher, Anieke; Dumm, Levin; Esper, Oliver; Herbert, Lisa C; Iwasaki, Shinya; Kreps, Gastón; Lawson, Vera J; Lo, Li; Malinverno, Elisa; Martinez-Garcia, Alfredo; Michel, Elisabeth; Moretti, Simone; Moy, Christopher M; Ravelo, Ana Christina; Riesselman, Christina R; Saavedra-Pellitero, Mariem; Sadatzki, Henrik; Seo, Inah; Singh, Raj K; Smith, Rebecca; Souza, Alexandre L; Stoner, Joseph S; Toyos, Maria H; Venancio, Igor Martins; Wan, Sui; Wu, Shuzhuang; Zhao, Xiangyu (2024): Five million years of Antarctic Circumpolar Current strength variability. Nature, 627(8005), 789-796, https://doi.org/10.1038/s41586-024-07143-3
Funding:
Deutsche Forschungsgemeinschaft, Bonn (DFG), grant/award no. AR 367/16-1: DFG Priority Programme 527 - SESPOD
Deutsche Forschungsgemeinschaft, Bonn (DFG), grant/award no. KA 3228/4-1: DFG Priority Programme 527 - SESPOD
Deutsche Forschungsgemeinschaft, Bonn (DFG), grant/award no. La1273/10-1: Dynamics of Pacific Antarctic Circumpolar Current (DYNAPACC)
Coverage:
Latitude: -54.212600 * Longitude: -125.425670
Date/Time Start: 2019-06-17T11:15:00 * Date/Time End: 2019-06-20T05:00:00
Minimum Elevation: -3604.0 m * Maximum Elevation: -3604.0 m
Event(s):
383-U1541 * Latitude: -54.212600 * Longitude: -125.425670 * Date/Time Start: 2019-06-17T11:15:00 * Date/Time End: 2019-06-20T05:00:00 * Elevation: -3604.0 m * Campaign: EXP383 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Age | Age | Ma | Wegwerth, Antje | ||
| 2 | Antarctic Circumpolar Current, strength | ACC strength | % | Wegwerth, Antje | see abstract | Relative to the Holocene. ACC strength < 5.3 Ma in Lamy et al. (2024, doi:10.1038/s41586-024-07143-3). |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
10800 data points
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