Kiefer, T; Sarnthein, Michael; Erlenkeuser, Helmut; Grootes, Pieter Meiert; Roberts, Andrew P (2001): (Table 1) Age determination of ODP Site 145-883 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.847771, Supplement to: Kiefer, T et al. (2001): North Pacific response to millennial-scale changes in ocean circulation over the last 60 kyr. Paleoceanography, 16(2), 179-189, https://doi.org/10.1029/2000PA000545
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Abstract:
Foraminifera-based sea surface temperature estimates in the northwest Pacific (Ocean Drilling Program Site 883; 51°N) varied by 4°C on millennial timescales over the last 60,000 calendar (cal) years, with the most prominent amplitudes during marine isotope stage 3. Age control is based on benthic d18O records, 14C ages, and on geomagnetic intensity variations at Site 883 tuned to the North Atlantic paleointensity stack since 75 ka (NAPIS-75), in turn, tied to the Greenland Ice Sheet Project 2 (GISP2) ice core chronology. On the basis of this tuning, northwest Pacific warm phases parallel Greenland cold stadials and viceversa. This contrasts with atmospheric heat transfer, expected to produce quasi-coeval signals across the Northern Hemisphere. The antiphasing may instead stem from variations in global thermohaline circulation. At its North Pacific terminus in the subarctic gyre, any slowdown or shutoff of North Atlantic Deep Water formation during Dansgaard-Oeschger stadials led to a turnoff or reduction of the upwelling of cold Pacific deepwater and thus, to striking, instantaneous, short-term warmings of surface water.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 51.198500 * Longitude: 167.768567
Date/Time Start: 1992-08-09T00:00:00 * Date/Time End: 1992-08-20T00:00:00
Minimum DEPTH, sediment/rock: 0.030 m * Maximum DEPTH, sediment/rock: 7.490 m
Event(s):
145-883 * Latitude: 51.198500 * Longitude: 167.768567 * Date/Time Start: 1992-08-09T00:00:00 * Date/Time End: 1992-08-20T00:00:00 * Elevation: -2398.3 m * Penetration: 2956.6 m * Recovery: 1225.7 m * Location: North Pacific Ocean * Campaign: Leg145 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 158 cores; 1506.1 m cored; 0 m drilled; 81.4% recovery
Comment:
Two site-specific apparent background ages were determined from a sample from termination II
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Laboratory code/label | Lab label | Kiefer, T | KIA = Leibniz Laboratory in Kiel, LLNL = Lawrence Livermore National Laboratory | ||
| 2 | DEPTH, sediment/rock | Depth sed | m | Kiefer, T | Geocode – mbsf | |
| 3 | Age, dated material | Dated material | Kiefer, T | |||
| 4 | Sample mass | Samp m | mg | Kiefer, T | ||
| 5 | Age, dated | Age dated | ka | Kiefer, T | Age, 14C AMS | |
| 6 | Reservoir age | Res age | ka | Kiefer, T | Age, 14C AMS | |
| 7 | Age, dated | Age dated | ka | Kiefer, T | Age, 14C milieu/reservoir corrected | |
| 8 | Age, dated, error to older | Age e + | ka + | Kiefer, T | Age, 14C milieu/reservoir corrected | |
| 9 | Age, dated, error to younger | Age e - | ka - | Kiefer, T | Age, 14C milieu/reservoir corrected | |
| 10 | Calendar age | Cal age | ka BP | Kiefer, T | ||
| 11 | Comment | Comment | Kiefer, T |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
199 data points