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  • 1
    Monograph available for loan
    Monograph available for loan
    Oxford : Pergamon Pr.
    Associated volumes
    Call number: MOP Per 416(41)
    In: Annals of the International Geophysical Year
    Type of Medium: Monograph available for loan
    Pages: 239 S.
    Series Statement: Annals of the International Geophysical Year 41
    Location: MOP - must be ordered
    Branch Library: GFZ Library
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  • 2
    Monograph available for loan
    Monograph available for loan
    Oxford [England] ; New York : Pergamon Press
    Call number: AWI G7-81-0857
    Type of Medium: Monograph available for loan
    Pages: IX, 239 S. : graph. Darst. ; 24,5 cm
    Series Statement: Annals of the International Geophysical Year XLI
    Branch Library: AWI Library
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  • 3
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    Norsk Polarinstitutt
    In:  Glaciology, Oslo, Norsk Polarinstitutt, vol. III, no. 5, pp. 563-572, pp. L11604, (ISSN: 1340-4202)
    Publication Date: 1958
    Keywords: Refraction seismics ; Reflection seismics ; Antarctica ; name ; okay
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 169-170 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN my research-student days, a colleague with literary ambitions threw his draft thesis on nuclear physics out of the window and settled down to write real fiction instead, although without much success. Fred Hoyle, in contrast, has succeeded in producing outstanding work in both astrophysics and ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 215 (1967), S. 1029-1032 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The idea of predicting the thickness of an ice sheet directly from surface slope can be misleading. The slope of the surface now appears to be related not only to the thickness of the ice but also to changes of longitudinal stress resulting from movement of ice over varying bottom ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 381 (1996), S. 684-686 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The satellite ERS-1, launched in 1991, was the first to be specifically programmed for altimetric surveys of large polar ice sheets. An analysis of the initial fast delivery data gave mean surface elevations every 6.7km along the satellite track2. These defined areas of level ice, which roughly ...
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 177 (1956), S. 584-586 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Reports which have appeared to date do not give a satisfactory interpretation of the detailed recordings. The reasons for rejecting Poulter's earlier interpretation1, which assumed that sea water percolates through ice shelves to sea-level, have already been outlined2. My preliminary report2 used ...
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-1432
    Keywords: Key words:Drosophila— Gene duplications — Carboxyl/cholinesterases — Phylogeny — Tertiary structure — Evolutionary rates
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract. A cluster composed of 10 active α-esterase genes and a pseudogene is distributed over 60 kb in the Drosophila melanogaster genome. This paper describes the corresponding cluster in Drosophila buzzatii, whose lineage diverged from that of D. melanogaster when the subgenera Drosophila and Sophophora diverged about 50 Mya. With three exceptions we find that the composition of the cluster is conserved in the two lineages. The location of αE1 in D. melanogaster differs from that of its nearest relative in D. buzzatii, and αE4 has duplicated independently in the two lineages. The nature of these differences indicates that a mechanism exists whereby copies of genes can be placed in opposite orientation and nonadjacent positions within a gene cluster, although this does not seem to be a feature of earlier events in the cluster's evolution. The rates of amino acid change are not significantly different between orthologs, but the rates differ sevenfold among paralogs, indicating that very different selective forces are acting on the genes of the cluster. Mapping of sequence differences onto a model of the tertiary structure of the enzymes indicates that motifs contributing to substrate binding and catalysis have changed radically in the αE4s and suggest that this subgroup of α-esterases may be evolving into a substantially different functional niche.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    International journal of earth sciences 70 (1981), S. 648-663 
    ISSN: 1437-3262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Abstract Wegener's expeditions pioneered many measurements that are now essential for computer modelling of ice sheets. Advances in knowledge of accumulation, thickness, temperature, crystal fabric and surface mapping of ice sheets and of impurities, gas content and isotopic ratios of ice cores from these ice sheets are outlined before computer modelling work is discussed. The value of such studies in providing large scale tests of geophysical concepts is emphasized. The paper concludes by suggesting that the drag of continental ice sheets on the top of continental blocks might be of comparable magnitude and tend to balance forces on the base of these blocks by motion of the asthenosphere. Apart from providing a possible reason for the aseismic nature of the Antarctic and Greenland land masses, the hypothesis provides a suitable link for this volume between Wegener's interest in continental ice sheets and continental drift.
    Abstract: Résumé Les expéditions de Wegener ont suscité de nombreuses mesures qui ont fourni des données aujourd'hui mûres pour établir des modèles de couvertures glaciaires par la voie de calculatrices. Mais avant de discuter ce procédé, mention est faite des progrès accomplis dans la connaissance de l'accumulation, de l'épaisseur, de la température, de la structure cristalline et de la cartographie des couvertures glaciaires ainsi que de leurs impuretés, leur teneur en gas et les rapports d'isotopes dans les carottes qui y ont été prélevées, études dont il convient de souligner la valeur par les données à grande échelles qu'elles ont fourni à l'appui de concepts géophysiques. Le mémoire conclut sur la suggestion que les forces d'entrainement des couvertures glaciaires continentales sur la surface des blocs continentaux doit être d'un ordre comparable aux forces agissant à la base de ces blocs dans leur mouvement sur l'asthénosphère et qu'ils tendent à égaler. Outre qu'elle donne une raison possible de la nature asismique du continent antactique et du Groenland, cette hypothèse, dans ce volume, forme un trait d'union dans les intérêts que Wegener a portés aux couvertures glaciaires continentales et à la dérive des continents.
    Notes: Zusammenfassung Wegeners Expeditionen haben viele Messungen angeregt, die zu Ergebnissen geführt haben, die nunmehr reif sind für Computer-Modelle von Eisdecken. Es werden die Fortschritte in der Kenntnis von Akkumulationsraten, Mächtigkeit, Temperatur, Kristallstruktur, Oberflächenkartierung von Eisdecken und Verunreinigungen umrissen. Danach wird die Arbeit mit dem Computer-Modell diskutiert. Der Wert solcher Untersuchungen für großmaßstäbliche Tests geophysikalischer Konzepte wird betont. Die Ergebnisse lassen erwarten, daß die Schubkräfte der kontinentalen Eisdecken auf dem Top der kontinentalen Blöcke in derselben Größenordnung liegen könnten wie die aus der Bewegung der Asthenosphäre an der Basis dieser Blöcke. Letztere könnten damit kompensiert werden. Unabhängig davon, daß die aufgestellte Hypothese mögliche Argumente für die aseismische Natur der Antarktischen und Grönland-Massen aufzeigt, verbindet sie im Rahmen dieses Bandes Wegeners Interesse an kontinentalen Eisdecken mit der Kontinentaldrift.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 314 (1985), S. 648-648 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Ice Sheet and Climate Modelling would have been a better title for this work, which aims to help graduate students bridge a gap between glaciology and climatology. The authors' views and research contributions are presented concisely in relation to brief outlines of our knowledge of the climate ...
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