Radiocarbon Levels in the Iceland Sea from 25–53 kyr and their Link to the Earth's Magnetic Field Intensity
Bibliographic Data
| ID | 9245142 |
|---|---|
| Authors | Antje H L Voelker (0000-0001-6465-6023), Pieter M Grootes (0000-0003-4265-3168), Marie-Josée Nadeau, Michael Sarnthein (0000-0002-8106-000X) |
| Year | 2000 |
| Volume | 42 |
| Issue | 3 |
| Pages | 437-452 |
| Publication date | 2000-01-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Radiocarbon (JOURNAL) |
| Journal identifiers | ISSN: 0033-8222 • E-ISSN: 1945-5755 |
| Publisher | Cambridge University Press (CUP) (PUBLISHER) |
| DOI | 10.1017/s0033822200030368 |
| OpenAlex | W163198 |
| Language | EN |
| Citations received | 51 |
| References cited | 58 |
By correlating the climate records and radiocarbon ages of the planktonic foraminifera N. pachyderma (s) of deep-sea core PS2644 from the Iceland Sea with the annual-layer chronology of the GISP2 ice core, we obtained 80 marine 14 C calibration points for the interval 11.4-53.3 ka cal BP. Between 27 and 54 ka cal BP the continuous record of 14 C/cal age differences reveals three intervals of highly increased 14 C concentrations coincident with low values of paleomagnetic field intensity, two of which are attributed to the geomagnetic Mono Lake and Laschamp excursions (33.5-34.5 ka cal BP with maximum 550 marine δ 14 C, and 40.3-41.7 ka cal BP with maximum 1215 marine δ 14 C, respectively). A third maximum (marine δ 14 C: 755) is observed around 38 ka cal BP and attributed to the geomagnetic intensity minimum following the Laschamp excursion. During all three events the A 14 C values increase rapidly with maximum values occurring at the end of the respective geomagnetic intensity minimum. During the Mono Lake Event, however, our A 14 C values seem to underestimate the atmospheric level, if compared to the 36 Cl flux measured in the GRIP ice core (Wagner et al. 2000) and other records. As this excursion coincides with a meltwater event in core PS2644, the underestimation is probably caused by an increased planktonic reservoir age. The same effect also occurs from 38.5 to 40 ka cal BP when the meltwater lid of Heinrich Event 4 affected the planktonic record
Benthic zone · Earth's magnetic field · Excursion · Foraminifera · Glacial period · Ice core · Magnetic field · Meltwater · Paleomagnetism · Physics · Radiocarbon dating · Geology and Paleoclimatology Research · Geomagnetism and Paleomagnetism Studies · Paleontology and Stratigraphy of Fossils · Geology · Oceanography · Paleontology
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| Unique citing works | 51 |
|---|---|
| Citations per year | 2,13 |
| Citation span | 2002 - 2019 (18) |
| Citation velocity | historical |
| Highly cited | No |
| Citation types | Neutral: 46 |