Ng, Hong Chin; Robinson, Laura F; Rowland, George Henry; Chen, Siyuan Sean; McManus, Jerry F (2021): Tropical Atlantic sediment U-series of James Cook cruise JC094 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.926847
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Abstract:
The radiogenic isotope ratio 231Pa/230Th of seawater and ocean sediments is a potentially powerful tool for tracing oceanic processes such as the ocean circulation and marine primary productivity. However, 231Pa/230Th reflects the combined signal of multiple controls associated with scavenging and oceanic transport, limiting its use as a paleo-proxy. Given that links between seawater and sedimentary 231Pa and 230Th distributions are crucial for understanding the cycling and removal fluxes of these nuclides, we carry out analysis of 231Pa and 230Th in both seawater (dissolved phase) and modern sediment samples acquired from five depth transects across the northern tropical Atlantic open ocean during the JC094 research expedition which took place in October-November 2013. Measurements of the radiogenic isotopes were performed using a MultiCollector-Inductively Coupled Plasma-Mass Spectrometer (MC-ICP-MS). In addition, CTD beam attenuation coefficient measurements and XRF scan Fe and Ti measurements of two sediment cores collected from the region during the same research expedition are presented to aid interpretation of 231Pa and 230Th data. Here we show the U-series dataset for the sediment samples.
Related to:
Ng, Hong Chin; Robinson, Laura F; Rowland, George Henry; Chen, Siyuan Sean; McManus, Jerry F (2020): Coupled analysis of seawater and sedimentary 231Pa/230Th in the tropical Atlantic. Marine Chemistry, 227, https://doi.org/10.1016/j.marchem.2020.103894
Ng, Hong Chin; Robinson, Laura F; Rowland, George Henry; Chen, Siyuan Sean; McManus, Jerry F (2021): Beam attenuation coefficient data from Carter Seamount station JC094-STN002 of the James Cook cruise JC094 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.926856
Ng, Hong Chin; Robinson, Laura F; Rowland, George Henry; Chen, Siyuan Sean; McManus, Jerry F (2021): Beam attenuation coefficient data from Knipovich seamount station JC094-STN020 of the James Cook cruise JC094 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.926857
Ng, Hong Chin; Robinson, Laura F; Rowland, George Henry; Chen, Siyuan Sean; McManus, Jerry F (2021): Beam attenuation coefficient data from Vayda ridge station JC094-STN044 of the James Cook cruise JC094 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.926859
Ng, Hong Chin; Robinson, Laura F; Rowland, George Henry; Chen, Siyuan Sean; McManus, Jerry F (2021): Beam attenuation coefficient data from Vema ridge stations JC094-STN032 and JCO94-STN039 of the James Cook cruise JC094 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.926858
Ng, Hong Chin; Robinson, Laura F; Rowland, George Henry; Chen, Siyuan Sean; McManus, Jerry F (2021): Iron and titanium content of sediment cores from Carter Seamount station JC094-STN018 of the James Cook cruise JC094 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.926860
Ng, Hong Chin; Robinson, Laura F; Rowland, George Henry; Chen, Siyuan Sean; McManus, Jerry F (2021): Iron and titanium content of sediment cores from Gramberg Seamount station JC094-STN059 of the James Cook cruise JC094 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.926862
Ng, Hong Chin; Robinson, Laura F; Rowland, George Henry; Chen, Siyuan Sean; McManus, Jerry F (2021): Tropical Atlantic seawater U-series of James Cook cruise JC094 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.926855
Rowland, George Henry; Ng, Hong Chin; Robinson, Laura F; McManus, Jerry F; Mohamed, Kais J; McGee, David (2017): Investigating the use of 232Th/230Th as a dust proxy using co-located seawater and sediment samples from the low-latitude North Atlantic. Geochimica et Cosmochimica Acta, 214, 143-156, https://doi.org/10.1016/j.gca.2017.07.033
Coverage:
Median Latitude: 10.712255 * Median Longitude: -35.815165 * South-bound Latitude: 5.589500 * West-bound Longitude: -51.100500 * North-bound Latitude: 15.464300 * East-bound Longitude: -21.272000
Date/Time Start: 2013-10-22T21:18:00 * Date/Time End: 2013-11-27T01:48:00
Minimum DEPTH, water: 570 m * Maximum DEPTH, water: 4565 m
Event(s):
JC094-STN008 * Latitude: 9.278000 * Longitude: -21.637833 * Date/Time: 2013-10-22T21:18:00 * Elevation: -4590.0 m * Campaign: JC094 (TROPICS) * Basis: James Cook * Method/Device: MegaCorer (MEGAC) * Comment: 3 cores succeded. 3 did not fire. 2 were empty. Niskin success
JC094-STN011 (ROV225) * Latitude: 9.169500 * Longitude: -21.265333 * Date/Time: 2013-10-23T20:41:00 * Elevation: -2743.0 m * Campaign: JC094 (TROPICS) * Basis: James Cook * Method/Device: Remote operated vehicle (ROV) * Comment: Deep part of dive sandy plain with scarce life. Moving up slope began to see rocks then some scattered corals. Around 2200 barnale shells. We were able to collect live solitary corals at several depths. 6 push cores recovered.
JC094-STN015 (ROV227) * Latitude: 9.205500 * Longitude: -21.299000 * Date/Time: 2013-10-26T22:09:00 * Elevation: -1357.0 m * Campaign: JC094 (TROPICS) * Basis: James Cook * Method/Device: Remote operated vehicle (ROV) * Comment: Extensive coral (live and solitary) collections at 1400m and 800m. Beautiful coral gardens 1300-1200m. Problems with slurp chambers- lots of material stuck in the tube.
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
240 data points