Cronin, Thomas M; Gemery, L; Briggs, W M; Jakobsson, Martin; Polyak, Leonid; Brouwers, E M (2010): (Table 2) Radiocarbon ages on Arctic box and multicores [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.808564, Supplement to: Cronin, TM et al. (2010): Quaternary Sea-ice history in the Arctic Ocean based on a new Ostracode sea-ice proxy. Quaternary Science Reviews, 29(25-26), 3415-3429, https://doi.org/10.1016/j.quascirev.2010.05.024
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Abstract:
Paleo-sea-ice history in the Arctic Ocean was reconstructed using the sea-ice dwelling ostracode Acetabulastoma arcticum from late Quaternary sediments from the Mendeleyev, Lomonosov, and Gakkel Ridges, the Morris Jesup Rise and the Yermak Plateau. Results suggest intermittently high levels of perennial sea ice in the central Arctic Ocean during Marine Isotope Stage (MIS) 3 (25-45 ka), minimal sea ice during the last deglacial (16-11 ka) and early Holocene thermal maximum (11-5 ka) and increasing sea ice during the mid-to-late Holocene (5-0 ka). Sediment core records from the Iceland and Rockall Plateaus show that perennial sea ice existed in these regions only during glacial intervals MIS 2, 4, and 6. These results show that sea ice exhibits complex temporal and spatial variability during different climatic regimes and that the development of modern perennial sea ice may be a relatively recent phenomenon.
Project(s):
Coverage:
Median Latitude: 84.772283 * Median Longitude: 161.910906 * South-bound Latitude: 79.988667 * West-bound Longitude: 139.906800 * North-bound Latitude: 88.810000 * East-bound Longitude: -174.288667
Date/Time Start: 1991-09-01T00:00:00 * Date/Time End: 1994-08-19T00:00:00
Minimum DEPTH, sediment/rock: 0.015 m * Maximum DEPTH, sediment/rock: 0.305 m
Event(s):
PI-94-AR_B12A (B12A) * Latitude: 79.988667 * Longitude: -174.288667 * Date/Time: 1994-08-05T00:00:00 * Elevation: -1609.0 m * Recovery: 0.43 m * Location: Mendeleev Ridge, Arctic Ocean * Campaign: PI-94-AR * Basis: Polar Sea * Method/Device: Box corer (BC)
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | Elevation of event | Elevation | m | |||
| 5 | Method/Device of event | Method/Device | ||||
| 6 | Core | Core | Cronin, Thomas M | abbreviation | ||
| 7 | Laboratory | Lab | Cronin, Thomas M | AA, University of Arizona Accelerator Mass Spectrometry (AMS) Laboratory; OS, National Ocean Sciences Accelerator Mass Spectrometry Facility (NOSAMS), Woods Hole | ||
| 8 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 9 | Age, dated | Age dated | ka BP | Cronin, Thomas M | Age, 14C AMS | ka BP |
| 10 | Calendar age | Cal age | ka BP | Cronin, Thomas M | Age, 14C milieu/reservoir corrected (-440 yr) | |
| 11 | Calendar age, standard deviation | Cal age std dev | ± | Cronin, Thomas M | Age, 14C milieu/reservoir corrected (-440 yr) |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
125 data points