PANGAEA_995768 Beryllium isotope and planktonic foraminifera d18O for sediment core MD05-2970 Nemoto, Karin; Horiike, Satoshi; Miyairi, Yosuke; Aze, Takahiro; Yokoyama, Yusuke Beryllium isotope and planktonic foraminifera d18O for sediment core MD05-2970 2026-07-08 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.995768 Investigator Yusuke Yokoyama yokoyama@aori.u-tokyo.ac.jp Investigator Karin Nemoto nemoto@aori.u-tokyo.ac.jp Earth Science Event label LATITUDE LONGITUDE DEPTH, sediment/rock AGE Beryllium-9 Beryllium-9, error Beryllium-10 Beryllium-10, error Beryllium-10/Beryllium-9 Beryllium-10/Beryllium-9 ratio, error Globigerinoides ruber, δ18O geoscientificInformation beryllium isotope Calypso Corer II Indonesian Throughflow MD052970 MD05-2970 MD148 High-resolution inductively coupled plasma mass spectrometer (HR-ICP-MS), Thermo Scientific, ELEMENT XR Accelerator mass spectrometry (AMS) Marion Dufresne (1995) 2005-07-07 2005-07-07 Complete -9.25 -9.25 130.5999999999992 130.5999999999992 0.0 m (DEPTH, sediment/rock) 28.9 m (DEPTH, sediment/rock) access rights needed CC-BY-4.0: Creative Commons Attribution 4.0 International (License comes into effect after moratorium ends) English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 659 data points text/tab-separated-values Khan, Hidayatullah; Govil, Pawan; Panchang, Rajani; Kumar, Pankaj; Agrawal, Shailesh (2022): Surface hydrographic variations in the western Arabian Sea through the last 172 kyr. Geo-Marine Letters, 42(2), 10, https://doi.org/10.1007/s00367-022-00733-y Kim, Ji-Eun; Khim, Boo-Keun; Ikehara, Minoru; Lee, Jongmin (2018): Orbital-scale denitrification changes in the Eastern Arabian Sea during the last 800 kyrs. Scientific Reports, 8(1), https://doi.org/10.1038/s41598-018-25415-7 Korte, Monika; Constable, Catherine; Donadini, Fabio; Holme, Richard (2011): Reconstructing the Holocene geomagnetic field. Earth and Planetary Science Letters, 312(3-4), 497-505, https://doi.org/10.1016/j.epsl.2011.10.031 Lathika, Nambiyathodi; Rahaman, Waliur; Tarique, Mohd; Gandhi, Naveen; Kumar, Avinash; Thamban, Meloth (2021): Deep water circulation in the Arabian Sea during the last glacial cycle: Implications for paleo-redox condition, carbon sink and atmospheric CO2 variability. Quaternary Science Reviews, 257, 106853, https://doi.org/10.1016/j.quascirev.2021.106853 Lee, T; Rand, Devin S; Lisiecki, Lorraine E; Gebbie, Geoffrey; Lawrence, Charles E (2023): Bayesian age models and stacks: combining age inferences from radiocarbon and benthic δ 18 O stratigraphic alignment. Climate of the Past, 19(10), 1993-2012, https://doi.org/10.5194/cp-19-1993-2023 Lu, Wanyi; Wang, Yi; Oppo, Delia W; Nielsen, Sune G; Costa, Kassandra M (2022): Comparing paleo-oxygenation proxies (benthic foraminiferal surface porosity, I/Ca, authigenic uranium) on modern sediments and the glacial Arabian Sea. Geochimica et Cosmochimica Acta, 331, 69-85, https://doi.org/10.1016/j.gca.2022.06.001 Matsuzaki, Hiroyuki; Nakano, Chuichiro; Tsuchiya, Yoko Sunohara; Kato, Kazuhiro; Maejima, Yuji; Miyairi, Yosuke; Wakasa, Sachi; Aze, Takahiro (2007): Multi-nuclide AMS performances at MALT. Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms, 259(1), 36-40, https://doi.org/10.1016/j.nimb.2007.01.145 Nemoto, Karin; Yokoyama, Yusuke; Horiike, Satoshi; Obrochta, Stephen P; Miyairi, Yosuke (2024): Meridional migrations of the Intertropical Convergence Zone during the last deglaciation in the Timor Sea detected by extensive radiocarbon dating. Radiocarbon, 66(6), 1958-1967, https://doi.org/10.1017/RDC.2024.13 Nishiizumi, Kunihiko; Imamura, Mineo; Caffee, Marc W; Southon, John R; Finkel, Robert C; McAninch, Jeffrey (2007): Absolute calibration of 10Be AMS standards. Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms, 258(2), 403-413, https://doi.org/10.1016/j.nimb.2007.01.297 Qian, Fang; Wang, Yi; Costa, Kassandra M; Nielsen, Sune G (2025): Ocean Oxygenation Changes in the Arabian Sea Oxygen Minimum Zone During the Penultimate Glacial Cycle. Paleoceanography and Paleoclimatology, 40(6), e2024PA005059, https://doi.org/10.1029/2024PA005059 Saher, Margot; Rostek, Frauke; Jung, S J A; Bard, Edouard; Schneider, Ralph R; Greaves, Mervyn; Ganssen, Gerald M; Elderfield, Henry; Kroon, Dick (2009): Western Arabian Sea SST during the penultimate interglacial: A comparison of UK'37 and Mg/Ca paleothermometry. Paleoceanography, 24(2), PA2212, https://doi.org/10.1029/2007PA001557 Sproson, Adam; Aze, Takahiro; Behrens, Bethany; Yokoyama, Yusuke (2021): Initial measurement of beryllium-9 using high-resolution inductively coupled plasma mass spectrometry allows for more precise applications of the beryllium isotope system within the Earth Sciences. Rapid Communications in Mass Spectrometry, 35(8), e9059, https://doi.org/10.1002/rcm.9059 von Blanckenburg, Friedhelm; Bouchez, Julien; Ibarra, Daniel E; Maher, Kate (2015): Stable runoff and weathering fluxes into the oceans over Quaternary climate cycles. Nature Geoscience, 8(7), 538-542, https://doi.org/10.1038/ngeo2452

Reactive phase Be isotopes, 10Be and 9Be, and major elament measurements were performed on 53 samples from core MD05-2970. d18O of Globigerinoides ruber are measured from the same core for 288 samples, respectively. We constrained a new age model using planktonic foraminifera (G. ruber) δ18O data along with the existing radiocarbon ages (Nemoto et al., 2024) in BIGMACS (Lee et al., 2023). The use of planktonic rather than benthic foraminifera δ18O is consistent with previous studies in the Indian Ocean (Khan et al., 2022; Kim et al., 2018; Lathika et al., 2021; Lu et al., 2022; Qian et al., 2025; Saher et al., 2009). A Thermo ELEMENT XR™ single collector sector field high resolution inductively coupled plasma mass spectrometry (HR-ICP-MS) installed at the Atmosphere and Occean Research Institute was used to obtain [9Be] (Sproson, Aze et al., 2021). 10Be/9Be was measured using a National Electrostatic Corporation (NEC) accelerator mass spectrometer (AMS), of 5 MV terminal voltage, at the University of Tokyo (UTokyo), Micro Analysis Laboratory, Tandem accelerator (Matsuzaki et al., 2007). Absolute values were obtained using the KNB5-2 standard (10Be/9Be = 8.558 × 10−12; (Nishiizumi et al., 2007). Decay correction is performed on 10Be concentration using a 10Be half-life of 1.387 Ma. The 10Be/9Be ratios were corrected for 10Be paleo-production using the paleomagnetic reference records of the geomagnetic dipole moment (Korte et al., 2011) following von Blanckenburg et al. (2015). ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.995768"!

http://en.wikipedia.org/wiki/ISO_6709 LATITUDE http://en.wikipedia.org/wiki/ISO_6709 LONGITUDE http://en.wikipedia.org/wiki/Kyr AGE https://doi.org/10.1002/rcm.9059 Initial measurement of beryllium-9 using high-resolution inductively coupled plasma mass spectrometry allows for more precise applications of the beryllium isotope system within the Earth Sciences https://doi.org/10.1007/s00367-022-00733-y Surface hydrographic variations in the western Arabian Sea through the last 172 kyr https://doi.org/10.1016/j.epsl.2011.10.031 Reconstructing the Holocene geomagnetic field https://doi.org/10.1016/j.gca.2022.06.001 Comparing paleo-oxygenation proxies (benthic foraminiferal surface porosity, I/Ca, authigenic uranium) on modern sediments and the glacial Arabian Sea https://doi.org/10.1016/j.nimb.2007.01.145 Multi-nuclide AMS performances at MALT https://doi.org/10.1016/j.nimb.2007.01.297 Absolute calibration of 10Be AMS standards https://doi.org/10.1016/j.quascirev.2021.106853 Deep water circulation in the Arabian Sea during the last glacial cycle: Implications for paleo-redox condition, carbon sink and atmospheric CO2 variability https://doi.org/10.1017/RDC.2024.13 Meridional migrations of the Intertropical Convergence Zone during the last deglaciation in the Timor Sea detected by extensive radiocarbon dating https://doi.org/10.1029/2007PA001557 Western Arabian Sea SST during the penultimate interglacial: A comparison of UK'37 and Mg/Ca paleothermometry https://doi.org/10.1029/2024PA005059 Ocean Oxygenation Changes in the Arabian Sea Oxygen Minimum Zone During the Penultimate Glacial Cycle https://doi.org/10.1038/ngeo2452 Stable runoff and weathering fluxes into the oceans over Quaternary climate cycles https://doi.org/10.1038/s41598-018-25415-7 Orbital-scale denitrification changes in the Eastern Arabian Sea during the last 800 kyrs https://doi.org/10.5194/cp-19-1993-2023 Bayesian age models and stacks: combining age inferences from radiocarbon and benthic δ 18 O stratigraphic alignment https://en.wikipedia.org/wiki/Marion_Dufresne_(1994) Marion Dufresne (1995) DIF 9.4 2026-07-08 2026-08-06