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  • 1
    Electronic Resource
    Electronic Resource
    Geomorphology (Communication arising) Age of long sediment cores from Lake Baikal (2002)
    [s.l.] : Nature Publishing Group
    Nature 415 (2002), S. 976-976 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The new BDP-98 drill core of the Baikal Drilling Project is a key palaeoclimate record in continental Asia because globally sensitive sedimentary records of such length and continuity are very rare. Kashiwaya et al. have attempted signal processing of the BDP-98 average grain-size record, but ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/415976a
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  • 2
    Electronic Resource
    Electronic Resource
    Muted climate variations in continental Siberia during the mid-Pleistocene epoch (2002)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 418 (2002), S. 65-68 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The large difference in carbon and oxygen isotope data from the marine record between marine oxygen isotope stage 12 (MIS 12) and MIS 11, spanning the interval between about 480 and 380 kyr ago, has been interpreted as a transition between an extremely cold glacial period and an ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature00886
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  • 3
    Electronic Resource
    Electronic Resource
    Biogenic silica from the BDP93 drill site and adjacent areas of the Selenga Delta, Lake Baikal, Siberia (1999)
    Springer
    Journal of paleolimnology 21 (1999), S. 9-17 
    Details
    ISSN: 1573-0417
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract Biogenic silica contents of sediments on the lower Selenga Delta and Buguldeika saddle in Lake Baikal show distinct fluctuations that reflect changes in diatom productivity, and ultimately, climate. The pattern of the upper 50 m of the section, dating from about 334 ka, is similar to that of the marine oxygen-isotope record, increasingly so as the younger sediments become progressively finer grained and less locally derived with time. The last two interglaciations are marked by biogenic silica abundances similar to those of the Holocene. The equivalent of marine oxygen-isotope stage 3 is distinctly intermediate in character between full glacial and full interglacial biogenic silica values. Following near-zero values during the last glacial maximum, biogenic silica began to increase at about 13 ka. The rise in biogenic silica to Holocene values was interrupted by an abrupt decrease during Younger Dryas time, about 11 to 10 14C ka.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008064705030
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  • 4
    Electronic Resource
    Electronic Resource
    Evidence for mid-Eemian cooling in continental climatic record from Lake Baikal (2000)
    Springer
    Journal of paleolimnology 23 (2000), S. 365-371 
    Details
    ISSN: 1573-0417
    Keywords: Lake Baikal ; diatoms ; biogenic silica ; Eemian ; climate change ; Siberia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract The discussion on climatic instability observed in Greenland ice cores during the Eemian period (substage 5e) resulted in discovery of a pronounced mid-Eemian cooling event. We report that the mid-Eemian cooling is found for the first time in the biogenic silica climatic record and microfossil abundance record of Lake Baikal. Timing of this event in Lake Baikal correlates well with timing of the European pollen records and marine sedimentary records. The presence of the mid-Eemian cooling signal in the Lake Baikal record suggests a much closer link between Asian climate influenced by strong pressure fields over the vast land masses and the climate-controlling processes in the North Atlantic during interglacial periods, than what was generally believed. Furthermore, the Lake Baikal record suggests that after the mid-Eemian cooling, the climatic conditions returned close to the warmth of the 5e optimum and thus argues that the warm conditions of the last interglacial persisted in Siberia throughout 5e, and did not end with the mid-Eemian cooling as suggested by several published marine records.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008188100542
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  • 5
    Electronic Resource
    Electronic Resource
    A computer-assisted thin-section study of Lake Baikal sediments: a tool for understanding sedimentary processes and deciphering their climatic signal (2000)
    Springer
    International journal of earth sciences 89 (2000), S. 260-267 
    Details
    ISSN: 1437-3262
    Keywords: Key words Image analysis ; Sedimentary structures ; Thin-sections ; Lake Baikal ; Laminations ; Diatoms ; Paleoclimate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract A freeze-drying technique for cutting thin-sections of soft sediments without disturbance is used to study several Lake Baikal sedimentary microstructures. Image analysis methodology is applied to selected thin-sections. This new technique provides quantification of the size, shape, orientation and packing of the objects forming the sedimentary structures. Sedimentary processes, which were previously poorly documented, have been identified, and others are better understood. Spheroidal lens-like pure aggregates of the diatom genus Synedra are found in hemipelagic sediments, providing a new insight into their traditional paleoecological interpretation. They are possibly related to a transportation mechanism from the littoral zone or to lacustrine snow. Laminae of Aulacoseira have also been recorded. Evidence of rapid sedimentation suggests they are due to massive algal blooms. The depositional mechanism that was suggested by other studies for explaining the laminations at the Buguldeika uplift is confirmed: the hemipelagic sedimentation is interrupted by terrigenous pulses due to discharge events. The sedimentation rate appears to be increasing during these pulses. Preliminary results from the Academician Ridge show stronger microbioturbation during cold periods. This observation strengthens the hypothesis of intense water circulation during colder times. Thin-section image analysis provides crucial information for deciphering lacustrine records and their regional and palaeoclimatic significance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005319900064
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