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- Seidenkrantz, Marit-Solveig, et al.
(författare)
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Two-step deglaciation at the oxygen isotope stage 6/5e transition: the Zeifen-Kattegat climatic oscillation
- 1996
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Ingår i: Quaternary Science Reviews. - 0277-3791 .- 1873-457X. ; 15:1, s. 63-75
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Tidskriftsartikel (refereegranskat)abstract
- Comparison of marine, lacustrine, and terrestrial records from twenty-four sites suggests the existence of a 'Younger Dryas'-type climate oscillation just prior to the Oxygen Isotope Stage 6/5e boundary. These records include results from biostratigraphic, pedostratigraphic, and speleothem studies, as well as analyses of stable isotope compositions of marine records and ice cores. The climate oscillation is named after the warm Zeifen Interstadial and the cold Kattegat Stadial. The Zeifen Interstadial may be related to a major meltwater pulse in the Baffin Bay-Labrador Sea-Norwegian Sea region. The climate oscillation is presumably in part a result of a variation in ocean circulation, especially in the strength of the North Atlantic Drift, but changes in the atmospheric circulation also played an important role. The geographically widespread distribution of the oscillation suggests that the two-step deglaciation influenced both the northern and southern hemispheres.
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- Björck, S., et al.
(författare)
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An event stratigraphy for the Last Termination in the North Atlantic region based on the Greenland Ice-core record: a proposal by the INTIMATE group.
- 1998
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Ingår i: Journal of Quaternary Science. - 0267-8179 .- 1099-1417. ; 13:4, s. 283-292
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Tidskriftsartikel (refereegranskat)abstract
- It is suggested that the GRIP Greenland ice-core should constitute the stratotype for the Last Termination. Based on the oxygen isotope signal in that core, a new event stratigraphy spanning the time interval from ca. 22.0 to 11.5 k GRIP yr BP (ca. 19.0-10.0 k C-14 yr BP) is proposed for the North Atlantic region. This covers the period from the Last Glacial Maximum, through Termination 1 of the deep-ocean record, to the Pleistocene-Holocene boundary, and encompasses the Last Glacial Late-glacial of the traditional northwest European stratigraphy. The isotopic record for this period is divided into two stadial episodes, Greenland Stadials 1 (GS-1) and 2 (GS-2), and two interstadial events, Greenland Interstadials 1 (GI-1) and 2 (GI-2). In addition, GI-1 and GS-2 are further subdivided into shorter episodes. The event stratigraphy is equally applicable to ice-core, marine and terrestrial records and is considered to be a more appropriate classificatory scheme than the terrestrially based radiocarbon-dated chronostratigraphy that has been used hitherto.
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- Mareev, EA, et al.
(författare)
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Studies of an artificially generated electrode effect at ground level
- 1996
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Ingår i: ANNALES GEOPHYSICAE-ATMOSPHERES HYDROSPHERES AND SPACE SCIENCES. - : SPRINGER VERLAG. - 0992-7689. ; 14:10, s. 1095-1101
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Tidskriftsartikel (refereegranskat)abstract
- The outdoor experiments, using a metallic grid above the ground surface, have yielded well-defined vertical profiles of the space-charge density. The profiles showed strong evidence for the existence of an electrode effect, which could be named the artif
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