Yamamoto, Masanobu; Yamamuro, Masumi; Tanaka, Yuichiro (2007): Age determination of sediment cores of the California Current System [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.742754, Supplement to: Yamamoto, M et al. (2007): The California current system during the last 136,000 years: response of the North Pacific High to precessional forcing. Quaternary Science Reviews, 26(3-4), 405-414, https://doi.org/10.1016/j.quascirev.2006.07.014
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Abstract:
Alkenone sea surface temperature (SST) records were generated from the Ocean Drilling Program's (ODP) Sites 1014 and 1016 to examine the response of the California Current System to global climate change during the last 136 ka. The temperature differences between these sites (Delta SST(NEP)=SST(ODP1014)-SST(ODP1016)) reflected the intensity of the California Current and varied between 0.4 and 6.1 °C. A high Delta SST(NEP) (weaker California Current) was found for late marine isotope stage (MIS) 2 and early MIS 5e, while a low Delta SST(NEP) (stronger California Current) was detected for mid-MIS 5e and MIS 1. Spectral analysis indicated that this variation pattern dominated 23- (precession) and 30-ka periods. Comparison of the Delta SST(NEP) and SST based on data from core MD01-2421 at the Japan margin revealed anti-phase variation; the high Delta SST(NEP) (weakening of the California Current) corresponded to the low SST at the Japan margin (the southward displacement of the NW Pacific subarctic boundary), and vice versa. This variation was synchronous with a model prediction of the tropical El Niño-Southern Oscillation behavior. These findings suggest that the intensity of the North Pacific High varied in response to precessional forcing, and also that the response has been linked with the changes of tropical ocean-atmosphere interactions.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 33.686375 * Median Longitude: -121.128500 * South-bound Latitude: 32.833867 * West-bound Longitude: -122.276000 * North-bound Latitude: 34.538883 * East-bound Longitude: -119.981000
Date/Time Start: 1996-05-14T00:00:00 * Date/Time End: 1996-05-26T00:00:00
Event(s):
167-1014 * Latitude: 32.833867 * Longitude: -119.981000 * Date/Time Start: 1996-05-14T00:00:00 * Date/Time End: 1996-05-18T00:00:00 * Elevation: -1165.8 m * Penetration: 833.9 m * Recovery: 767.5 m * Location: North Pacific Ocean * Campaign: Leg167 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 92 cores; 833.9 m cored; 0 m drilled; 92% recovery
167-1016 * Latitude: 34.538883 * Longitude: -122.276000 * Date/Time Start: 1996-05-20T00:00:00 * Date/Time End: 1996-05-26T00:00:00 * Elevation: -3835.0 m * Penetration: 696.5 m * Recovery: 694.7 m * Location: North Pacific Ocean * Campaign: Leg167 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 77 cores; 696.5 m cored; 0 m drilled; 99.7% recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
Download Data
Datasets listed in this publication series
- Yamamoto, M; Yamamuro, M; Tanaka, Y (2007): (Table 1) Age-depth model of ODP Site 167-1014. https://doi.org/10.1594/PANGAEA.742750
- Yamamoto, M; Yamamuro, M; Tanaka, Y (2007): (Table 2) Age-depth model of ODP Site 167-1016. https://doi.org/10.1594/PANGAEA.742752