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  • 1
    Electronic Resource
    Electronic Resource
    Records of lead deposition in Lake Michigan sediments since 1880. Comments (1979)
    s.l. : American Chemical Society
    Environmental science & technology 13 (1979), S. 478-480 
    Details
    ISSN: 1520-5851
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/es60152a011
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  • 2
    Electronic Resource
    Electronic Resource
    210 Pb dating of annually laminated lake sediments from Finland (1979)
    [s.l.] : Nature Publishing Group
    Nature 280 (1979), S. 53-55 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Most workers using 210Pb dating have assumed the initial unsupported 210Pb concentration to be constant throughout a dated profile, or at least in large sections of the profile. This assumption can be satisfied in theory by a direct association between sedimentation and unsupported 210Pb supply5, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/280053a0
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  • 3
    Electronic Resource
    Electronic Resource
    Alternative 210 Pb dating: results from the New Guinea Highlands and Lough Erne (1978)
    [s.l.] : Nature Publishing Group
    Nature 271 (1978), S. 339-342 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1 Unsupported 210Pb concentration against depth in cores from Lough Erne, Northern Ireland, and Lake Ipea, Papua New Guinea. a, Lower Lough Erne, profile SMI; b, Lower Lough Erne profile FM1; c, Upper Lough Erne profile FM2; d, Lake Ipea, Core 1. Fig. 2 Alternative 210Pb based age against ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/271339a0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The characterisation of spin in Euclidean space-time (1983)
    Springer
    Archive for rational mechanics and analysis 84 (1983), S. 171-188 
    Details
    ISSN: 1432-0673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00252131
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  • 5
    Electronic Resource
    Electronic Resource
    A frame-independent description of the principles of classical mechanics (1986)
    Springer
    Archive for rational mechanics and analysis 95 (1986), S. 1-22 
    Details
    ISSN: 1432-0673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00280786
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  • 6
    Electronic Resource
    Electronic Resource
    Inertial frames in classical space-time (1978)
    Springer
    Archive for rational mechanics and analysis 67 (1978), S. 337-350 
    Details
    ISSN: 1432-0673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00247663
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  • 7
    Electronic Resource
    Electronic Resource
    A record of accelerated erosion in the recent sediments of Blelham Tarn in the English Lake district (1997)
    Springer
    Journal of paleolimnology 18 (1997), S. 103-120 
    Details
    ISSN: 1573-0417
    Keywords: magnetism ; diatoms ; radioisotopes ; erosion ; laminae ; chronology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract Two frozen cores from Blelham Tarn were subsampled and measured using mineral magnetic, loss-on-ignition (LOI), radiometric, granulometric and diatom analyses. A detailed chronology was established using varves, radioisotopes and diatoms. This has enabled an accurately dated reconstruction of sedimentation over the past forty years. Despite a large increase in lake productivity, evidence suggests that the observed exponential increase in sedimentation rates can be attributed to erosion within the catchment. The predominant sediment source has been identified as surface soil. A comparison between the trend of accelerated sedimentation and the record of increased sheep stocking density for the area within which the most of the catchment lies, as well as observations of contemporary surface processes within the catchment, both suggest that much of the recent erosion is a direct response to increased pressure from sheep grazing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007922129794
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  • 8
    Electronic Resource
    Electronic Resource
    Paleolimnological evidence for the recent acidification of Llyn Hir, Dyfed, Wales (1989)
    Springer
    Journal of paleolimnology 2 (1989), S. 245-262 
    Details
    ISSN: 1573-0417
    Keywords: acidification ; diatoms ; sediment chemistry ; magnetic stratigraphy ; soot ; paleolimnology ; Wales
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract A variety of paleolimnological techniques, coupled with historical data on land-use and fisheries, are used to evaluate the magnitude, timing, and causes of acidification of Llyn Hir, a moorland lake in central Wales. pH reconstruction based on diatom analysis suggests a gradual decline in lakewater pH beginning ca. 1870 and intensifying in the mid-1930's, with a total decline of 1.1 pH units between 1870 and 1984. This pH decline correlates with increased sedimentary concentrations of carbonaceous particles, trace metals, and magnetic minerals, which indicate the local deposition of atmospherically transported products of fossil-fuel combustion. Pollen data and the historical record show no significant alterations in land-use or catchment vegetation, indicating that acidification of Llyn Hir is a result of the increased deposition of atmospheric pollutants, not of land-use and vegetation change.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00195475
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  • 9
    Electronic Resource
    Electronic Resource
    Catchment disturbance inferred from paleolimnological studies of three contrasted sub-humid environments in Morocco (1988)
    Springer
    Journal of paleolimnology 1 (1988), S. 293-322 
    Details
    ISSN: 1573-0417
    Keywords: catchment disturbance ; sediment cores ; magnetic minerals ; geochemistry ; pollen ; diatoms ; Morocco
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract Paleolimnological techniques for assessing recent drainage basin disturbance are evaluated in three Moroccan lakes with catchments contrasted in terms of land-use and vegetation. Rates of sediment accumulation in the two lakes with agricultural catchments were relatively high (〉1.6 cm yr-1) in the most recent past. Dilution effects prevented core dating by the 210Pb method alone and post-1953 chronologies were constructed by combining 210Pb and 137Cs data. The recent sediment accumulation rate at the currently least disturbed site, where natural Cedrus forest is still abundant, was relatively low (〈0.4 cm yr-1) but has increased since the mid-19th century. Magnetic, geochemical, pollen, and diatom studies of all three lake sediment cores linked with modern field survey data show that soil erosion in the most vegetationally disturbed catchment (Dayat-er-Roumi) has been high throughout the recent past and that intensity peaks are probably associated with wetland drainage operations beginning in the 1940's. At the partially forested site (Dayat Affougah), pre-1950's woodland clearance and other land-use changes are the likely cause of past major soil erosion episodes. The site currently dominated by natural Cedrus forest (Lac Azigza) shows only minor disturbance during the past c. 150 years although a major soil erosion episode occrred in the 17th century. Paleolimnological analysis has clearly demonstrated that major landscape change has occurred at all three sites. However, only at the two sites with catchment cultivation do previously accelerated soil erosion and lake sediment accumulation rates persist to the present. Information essential for formulation of appropriate management plans is presented and the importance of paleolimnology in assessing man-induced lake-catchment disturbance is stressed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00184003
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Radiometric dating of lake sediments from Signy Island (maritime Antarctic): evidence of recent climatic change (1995)
    Springer
    Journal of paleolimnology 13 (1995), S. 179-191 
    Details
    ISSN: 1573-0417
    Keywords: maritime Antarctic ; Signy Island ; lakes ; sediments ; Pb-210 ; Cs-137 ; radionuclide fluxes ; climate change
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract Sediment cores from three lakes (Moss, Sombre and Heywood) in the maritime Antarctic (Signy Island, South Orkney Islands) have been successfully dated radiometrically by210Pb and137Cs. The core inventories of both fallout radionuclides are an order of magnitude higher than that which can be supported by the direct atmospheric flux at this latitude. The elevated values may be explained by fallout onto the catchment during the winter being delivered directly to the lakes during the annual thaw. Two of the lakes (Sombre and Heywood) show marked increases in sediment accumulation afterc. 1950. This appears to be associated with a documented rise in temperature in the South Orkney Islands, which has caused extensive deglaciation at Signy Island.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00678106
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