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Bostock, Helen C; Hayward, Bruce William; Neil, Helen L; Sabaa, Ashwaq T; Scott, George H (2015): Glacial-Interglacial data from the marine sediment cores in the Solander Trough, New Zealand [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.846175, Supplement to: Bostock, HC et al. (2015): Changes in the position of the Subtropical Front south of New Zealand since the last glacial period. Paleoceanography, 30(7), 824-844, https://doi.org/10.1002/2014PA002652

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Abstract:
This study fills an important gap in our understanding of past changes in the Southern Subtropical Front (S-STF) in the southwest Pacific Ocean. Paleo-sea surface temperatures (SST) were estimated from planktic foraminiferal census counts from cores straddling the modern S-STF in the Solander Trough, south of New Zealand. The estimated SST were compared for 6 time slices; glacial period (25-21 ka), Last Glacial Maximum (LGM; 21-18 ka), early deglaciation (18-16 ka), late deglacial/early Holocene period (14-8 ka), mid-Holocene period (8-4 ka), and late Holocene period (4-0 ka). The position of the S-STF was determined by two methods: (1) the location of the 10°C isotherm and (2) the location of the highest SST gradients. These new results suggest that the S-STF was not continuous between east and west of New Zealand during the glacial period. Steep SST gradients indicate that a strong S-STF rapidly shifted south during the LGM and early deglaciation. During the late deglacial and Holocene periods the position of the S-STF differs between the two methods with reduced SST gradients, suggesting a more diffuse S-STF in the Solander Trough at this time. The glacial SST data suggest that the S-STF shifted north to the west of New Zealand, while to the east there was a stronger SST gradient across the front. This was possibly the result of an increased wind stress curl, which could have been caused by stronger, or more northerly Southern Hemisphere westerly winds (SHWW), or a merging of the SHWW split jet in this region.
Coverage:
Median Latitude: -48.918397 * Median Longitude: 165.968409 * South-bound Latitude: -58.667000 * West-bound Longitude: 160.220000 * North-bound Latitude: -46.708000 * East-bound Longitude: 169.360000
Date/Time Start: 2008-04-15T00:00:00 * Date/Time End: 2008-04-15T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
12 datasets

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Datasets listed in this publication series

  1. Bostock, HC; Hayward, BW; Neil, HL et al. (2015): Age determination of sediment cores in the Solander Trough, New Zealand. https://doi.org/10.1594/PANGAEA.846347
  2. Bostock, HC; Hayward, BW; Neil, HL et al. (2015): Planktonic foraminiferal assemblages and SST calculation of sediment surface samples of the Solander Trough, New Zealand. https://doi.org/10.1594/PANGAEA.846166
  3. Bostock, HC; Hayward, BW; Neil, HL et al. (2015): Planktonic foraminiferal assemblages and SST calculation of sediment core TAN0803/9. https://doi.org/10.1594/PANGAEA.846168
  4. Bostock, HC; Hayward, BW; Neil, HL et al. (2019): Age model of sediment core TAN0803-09. https://doi.org/10.1594/PANGAEA.899509
  5. Bostock, HC; Hayward, BW; Neil, HL et al. (2019): Age model of sediment core TAN1106/28. https://doi.org/10.1594/PANGAEA.899510
  6. Bostock, HC; Hayward, BW; Neil, HL et al. (2015): Planktonic foraminiferal assemblages and SST calculation of sediment core TAN1106/28. https://doi.org/10.1594/PANGAEA.846169
  7. Bostock, HC; Hayward, BW; Neil, HL et al. (2019): Age model of sediment core TAN1106/34. https://doi.org/10.1594/PANGAEA.899511
  8. Bostock, HC; Hayward, BW; Neil, HL et al. (2015): Planktonic foraminiferal assemblages and SST calculation of sediment core TAN1106/34. https://doi.org/10.1594/PANGAEA.846170
  9. Bostock, HC; Hayward, BW; Neil, HL et al. (2019): Age model of sediment core TAN1106/43. https://doi.org/10.1594/PANGAEA.899512
  10. Bostock, HC; Hayward, BW; Neil, HL et al. (2015): Planktonic foraminiferal assemblages and SST calculation of sediment core TAN1106/43. https://doi.org/10.1594/PANGAEA.846171
  11. Bostock, HC; Hayward, BW; Neil, HL et al. (2019): Age model of sediment core TAN1106/89. https://doi.org/10.1594/PANGAEA.899513
  12. Bostock, HC; Hayward, BW; Neil, HL et al. (2015): Planktonic foraminiferal assemblages and SST calculation of sediment core TAN1106/89. https://doi.org/10.1594/PANGAEA.846172