Takata, Hiroyuki; Chun, Jong-Hwa; Cheong, Daekyo; Khim, Boo-Keun: Occurrences of fossil planktonic foraminifera in cores PC-11 and ND-2 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.973858 (dataset in review)
Abstract:
We investigated fossil planktonic foraminifera from cores ND-02 (Nakdong River delta) and PC-11 (inner shelf off southeast Korea), to assess millennial-scale variations in the surface oceanography. The coiling ratio of Neogloboquadrina pachyderma shows five millennial-scale near-cyclic fluctuations (~8.7–8.3, ~7.5–6.2, ~4.7, ~2.8 and ~0.5 ka) since ~9 ka. These variations are similar to warm-water diatom variations at the Oki Ridge where a cyclicity of ~1.6 kyr is present, possibly associated with a Bond event. By contrast, the near-cyclic variations in our planktonic foraminiferal record were not fully consistent with the intensity variations of the Tsushima Warm Current and Kuroshio current. Our records from southeast Korea seem to reflect the more regional oceanographic variations in the marginal seas of East Asia. We suggest that the coastal upwelling of the subsurface water along the southeast coast of Korea plays an important role in generating near-cyclic variations of warm-water biota, with a possible connection to a Bond event.
Supplement to:
Takata, Hiroyuki; Chun, Jong-Hwa; Cheong, Daekyo; Khim, Boo-Keun (in review): Holocene millennial-scale variations of Neogloboquadrina pachyderma (planktonic foraminifera) in the southeast coastal areas of Korea. Paleoceanography and Paleoclimatology
Coverage:
Median Latitude: 35.194940 * Median Longitude: 129.136324 * South-bound Latitude: 35.056069 * West-bound Longitude: 128.930147 * North-bound Latitude: 35.333810 * East-bound Longitude: 129.342500
Date/Time Start: 2010-07-01T00:00:00 * Date/Time End: 2013-11-01T00:00:00
Minimum DEPTH, sediment/rock: 0.0200 m * Maximum DEPTH, sediment/rock: 5.7400 m
Event(s):
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
943 data points