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 variations (~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 reported intensity variations of the Tsushima Warm Current in the East Asian margin and the warm Kuroshio Current in the Northwest Pacific. 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 cold water along the southeast coast of Korea plays an important role in generating near-cyclic variations of warm-water biota. These variations may have a connection to the Bond event periodicity in the North Atlantic Ocean.
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: 0.02 m * Maximum DEPTH, sediment/rock: 33.05 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Takata, Hiroyuki | |||
| 2 | DEPTH, sediment/rock | Depth sed | m | Takata, Hiroyuki | Geocode | |
| 3 | AGE | Age | ka BP | Takata, Hiroyuki | Geocode | |
| 4 | Gallitellia vivans | G. vivans | # | Takata, Hiroyuki | Counting >125 µm fraction | |
| 5 | Globigerina bulloides | G. bulloides | # | Takata, Hiroyuki | Counting >125 µm fraction | |
| 6 | Globigerina sp. | Globigerina sp. | # | Takata, Hiroyuki | Counting >125 µm fraction | indet. |
| 7 | Globigerinita glutinata | G. glutinata | # | Takata, Hiroyuki | Counting >125 µm fraction | |
| 8 | Globigerinita uvula | G. uvula | # | Takata, Hiroyuki | Counting >125 µm fraction | |
| 9 | Globigerinoides conglobatus | G. conglobatus | # | Takata, Hiroyuki | Counting >125 µm fraction | |
| 10 | Globigerinoides ruber | G. ruber | # | Takata, Hiroyuki | Counting >125 µm fraction | |
| 11 | Globoconella inflata | G. inflata | # | Takata, Hiroyuki | Counting >125 µm fraction | |
| 12 | Globorotalia menardii | G. menardii | # | Takata, Hiroyuki | Counting >125 µm fraction | |
| 13 | Globorotalia sp. | Globorotalia sp. | # | Takata, Hiroyuki | Counting >125 µm fraction | Globorotalia? sp. |
| 14 | Neogloboquadrina dutertrei | N. dutertrei | # | Takata, Hiroyuki | Counting >125 µm fraction | |
| 15 | Neogloboquadrina incompta | N. incompta | # | Takata, Hiroyuki | Counting >125 µm fraction | |
| 16 | Neogloboquadrina pachyderma dextral | N. pachyderma d | # | Takata, Hiroyuki | Counting >125 µm fraction | |
| 17 | Neogloboquadrina pachyderma sinistral | N. pachyderma s | # | Takata, Hiroyuki | Counting >125 µm fraction | |
| 18 | Orbulina universa | O. universa | # | Takata, Hiroyuki | Counting >125 µm fraction | |
| 19 | Pulleniatina obliquiloculata | P. obliquiloculata | # | Takata, Hiroyuki | Counting >125 µm fraction | |
| 20 | Trilobatus sacculifer | T. sacculifer | # | Takata, Hiroyuki | Counting >125 µm fraction | |
| 21 | Turborotalita quinqueloba | T. quinqueloba | # | Takata, Hiroyuki | Counting >125 µm fraction | |
| 22 | Foraminifera, planktic indeterminata | Foram plankt indet | # | Takata, Hiroyuki | Counting >125 µm fraction | Micellaneous |
| 23 | Foraminifera, planktic, total | Foram plankt tot | # | Takata, Hiroyuki | Counting >125 µm fraction | |
| 24 | Split | Split | # | Takata, Hiroyuki | Counting >125 µm fraction | |
| 25 | Foraminifera, planktic | Foram plankt | #/g | Takata, Hiroyuki | Counting >125 µm fraction | |
| 26 | Neogloboquadrina pachyderma dextral/sinistral, coiling ratio | N pachy d/s | % | Takata, Hiroyuki | Counting >125 µm fraction |
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:
1137 data points