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  • 1
    Online Resource
    Online Resource
    Induction Soundings of the Earth's Mantle. (2017)
    Cham :Springer International Publishing AG,
    Details
    Keywords: Earth (Planet)--Mantle. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (114 pages)
    Edition: 1st ed.
    ISBN: 9783319537955
    Series Statement: GeoPlanet: Earth and Planetary Sciences Series
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=4926741
    DDC: 550
    Language: English
    Note: Intro -- Series Editors -- Managing Editor -- Advisory Board -- Foreword -- Contents -- Introduction -- References -- 1 Impedances, Sources and Environments -- Abstract -- 1.1 Magnetotelluric Impedances in the XIX-XXI Centuries -- 1.2 Magnetovariation Impedances in the XX Century -- 1.3 Impedance Matrix for a Laterally Anisotropic Medium -- 1.4 3D Impedance Matrix -- 1.5 Impedances for Laterally Inhomogeneous Media -- 1.6 Modern Impedances for Soundings -- 1.7 Influence of Non-linear Ohm's Law -- 1.8 Conclusion -- References -- 2 Several Impedances from One Equation -- Abstract -- 2.1 Introduction -- 2.2 Modeling of Fields by Stochastic Processes -- 2.2.1 Random Process Definition -- 2.2.2 The Distribution Function and Its Moments -- 2.2.3 Stationary and Ergodic Hypothesis -- 2.2.4 The Spectrum of a Random Process -- 2.2.5 Properties of the Spectral Density -- 2.3 Impedances as the Transfer Functions -- 2.3.1 Two-Component Analysis. Coherency -- 2.3.2 Signals with Uncorrelated Noise. Shift Error -- 2.4 Data Processing of Dst Field Components -- 2.5 Principal and Selected Directions in Magnetotelluric -- 2.6 Confidence Limits -- 2.7 Mean and Robust Estimations -- 2.8 Conclusions -- References -- 3 Modeling of Deep Soundings -- Abstract -- 3.1 Introduction -- 3.2 Numerical Simulations of Induction Soundings -- 3.3 Modeling Results -- 3.4 Conclusions and Discussion -- References -- 4 Results of Deep Soundings in Europe -- Abstract -- 4.1 Introduction -- 4.2 Soundings of 1D Layered Earth -- 4.3 Methods and Sources -- 4.4 Results of Deep Soundings -- 4.5 Conclusions and Discussion -- References -- 5 Electromagnetic Monitoring -- Abstract -- 5.1 Introduction -- 5.2 Data Processing Peculiarities -- 5.3 Variability of the Symmetry Axis of Magnetosphere Ring Current -- 5.4 Relation to the Sun -- 5.5 Relation to Seismicity. , 5.6 Relation to Geomagnetic Jerks -- 5.7 Conclusion -- References.
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  • 2
    Online Resource
    Online Resource
    The annual peak in the SST anomaly spectrum (2008)
    Associated volumes
    Details Availability
    In: Journal of climate, Boston, Mass. [u.a.] : AMS, 1988, 21(2008), 12, Seite 2810-2823, 1520-0442
    In: volume:21
    In: year:2008
    In: number:12
    In: pages:2810-2823
    Description / Table of Contents: The manner in which monthly mean sea surface temperature anomalies (SSTAs) show enhanced variance at the annual period in the extratropics (an annual peak in the variance spectrum) is illustrated by observations and model simulations. A mechanism, related to the reemergence of winter SST anomalies, is proposed to explain the annual peak in SST spectrum. The idea is supported by the analysis of a hierarchy of models, including Intergovernmental Panel on Climate Change model simulations. The results of the model experiments further suggest that the annual peak is either weak or absent if decadal SST variability is forced by local airsea interaction. However, if ocean subsurface temperature variability forces decadal SST variability, the annual peak is much stronger. Strong annual peaks may therefore be seen as an indication of ocean-forced decadal SST variability in the extratropics.
    Type of Medium: Online Resource
    Pages: graph. Darst
    ISSN: 1520-0442
    DOI: 10.1175/2007JCLI2025.1
    Language: English
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  • 3
    Book
    Book
    Modes of the wintertime Arctic temperature variability (2002)
    Hamburg : Max-Planck-Inst. für Meteorologie
    Details Availability
    Keywords: temperature ; Arctic
    Type of Medium: Book
    Pages: 18 S , graph. Darst., Kt
    Series Statement: Report / Max-Planck-Institut für Meteorologie 343
    Language: English
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  • 4
    Book
    Book
    The early century warming in the Arctic : a possible mechanism (2003)
    Hamburg : Max-Planck-Inst. für Meteorologie
    Details Availability
    Keywords: climate change ; 20th century ; Forschungsbericht ; Arctic region
    Type of Medium: Book
    Pages: 31, 4 S , graph. Darst., Kt , 30 cm
    Series Statement: Report / Max-Planck-Institut für Meteorologie 345
    Language: English
    Note: Literaturverz. S. 17 - 22
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  • 5
    Online Resource
    Online Resource
    Induction Soundings of the Earth's Mantle (2018)
    Cham : Springer
    Details Availability
    Keywords: Earth sciences ; Earth Sciences ; Structural geology ; Geophysics ; Mathematical physics ; Erdmantel ; Geophysik ; Elektromagnetisches Verfahren ; Elektromagnetische Messung ; Säkularvariation ; Erdmagnetisches Feld ; Erdmantel ; Elektrische Leitfähigkeit ; Geoelektrischer Widerstand ; Magnetotellurik ; Erdmagnetische Pulsation ; Erdmagnetismus
    Description / Table of Contents: At the heart of this book is the generalized theoretical approach that is applied to investigate the geoelectrical structure of the Earth’s mantle. It also analyzes the results of regional and global induction sounding of the Earth’s mantle and compares them with the results obtained by other geophysical methods. The generalized theoretical approach employs the Induction Law as a basis for identifying extended relations between magnetic field components, including their plane divergence, impedances and spatial derivatives. The estimations of impedance values and spatial derivatives are performed using the theory of stochastic processes. The book also considers the external sources of magnetic fields used for sounding the Earths mantle from the modern theory perspective, as well as the problem of coincidence of magneto-variation and magnetotelluric methods. Further, it discusses secular variations in the Earth’s resistance caused by non-induction sources, factors that are correlated with the number of earthquakes in the region and shifted in time with global indexes. It is a valuable resource for scientists applying deep induction soundings or interested in the structures of and processes in the Earth’s interior
    Type of Medium: Online Resource
    Pages: Online-Ressource (XVI, 100 p. 39 illus., 12 illus. in color, online resource)
    ISBN: 9783319537955
    Series Statement: GeoPlanet: Earth and Planetary Sciences
    URL: https://doi.org/10.1007/978-3-319-53795-5
    URL: https://swbplus.bsz-bw.de/bsz491755147cov.jpg
    DOI: 10.1007/978-3-319-53795-5
    Language: English
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  • 6
    Online Resource
    Online Resource
    Die Bedeutung der Ozean-Atmosphäre-Wechselwirkung für die natürliche Klimavariabilität in der Arktis (2010)
    Kiel
    Details Availability
    Keywords: Hochschulschrift
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (PDF-Datei: 41 Seiten = 2,5 MB)
    URL: http://oceanrep.geomar.de/11440/
    Language: German
    Note: Zusammenfassung in deutscher und englischer Sprache
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  • 7
    Book
    Book
    Secular trends in daily precipitation characteristics : greenhouse gas simulation with a coupled AOGCM (2000)
    Hamburg : Max-Planck-Inst. für Meteorologie
    Details Availability
    Keywords: Forschungsbericht
    Type of Medium: Book
    Pages: 47 S , graph. Darst., Kt
    Series Statement: Report / Max-Planck-Institut für Meteorologie No. 313
    Language: English
    Note: AOGCM = Atmosphere-Ocean General Circulation Model
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  • 8
    Online Resource
    Online Resource
    Perspectives of Northern Sea Route and Northwest Passage in the twenty-first century (2009)
    Associated volumes
    Details Availability
    In: Climatic change, Dordrecht [u.a.] : Springer Science + Business Media B.V, 1977, (2009), 1573-1480
    In: year:2009
    In: extent:12
    Description / Table of Contents: The ability of modern climate models to simulate ice season length in the Arctic, its recent changes and navigation season on Arctic marine routes along the Eurasian and the North American coastlines is evaluated using satellite ice cover observations for 19792007. Simulated mean sea ice season duration fits remarkably well to satellite observations and so do the simulated 20th century changes using historical forcing. This provides confidence to extend the analysis to projections for the twenty-first century. The navigation season for the Northern Sea Route (NSR) and Northwest Passage (NWP), alternative sea routes from the North Atlantic to Asia, will considerably increase during this century. The models predict prolongation of the season with a free passage from 3 to 6 months for the NSR and from 2 to 4 months for the NWP by the end of twenty-first century according to A1B scenario of the IPCC. This suggests that transit through the NSR from Western Europe to the Far East may be up to 15% more profitable in comparison to Suez Canal transit by the end of the twenty-first century.
    Type of Medium: Online Resource
    Pages: 12 , graph. Darst
    ISSN: 1573-1480
    DOI: 10.1007/s10584-009-9683-2
    Language: English
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  • 9
    Online Resource
    Online Resource
    Das arktische Meereis in Klimamodellen : Variabilitäten und anthropogener Klimawandel (2012)
    Kiel
    Details Availability
    Keywords: Hochschulschrift
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (179 Blatt = 12 MB)
    URL: https://oceanrep.geomar.de/14324
    Language: German
    Note: Zusammenfassung in deutscher und englischer Sprache
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  • 10
    Online Resource
    Online Resource
    Is the observed NAO variability during the instrumental record unusual? (2008)
    Associated volumes
    Details Availability
    In: Geophysical research letters, Hoboken, NJ : Wiley, 1974, 35(2008), 1944-8007
    In: volume:35
    In: year:2008
    In: extent:5
    Description / Table of Contents: Observed multidecadal variability (30 yr running means, trends, and moving standard deviations) of the North Atlantic Oscillation (NAO) during the instrumental record is compared to that simulated by two different coupled general circulation models in extended-range control experiments. Simulated NAO exhibits strong low frequency fluctuations, even on multi-centennial time scale. Observed multi-decadal NAO variations agree well with the model variability. Trend probability distribution functions, observed and simulated, were not found to be different with statistical significance. Thus, multi-decadal NAO changes similar to those observed during the instrumental record, including the recent increase in 1965-1995, may be internally generated within the coupled atmosphere-ocean system without considering external forcing.
    Type of Medium: Online Resource
    Pages: 5 , graph. Darst
    ISSN: 1944-8007
    DOI: 10.1029/2008GL033273
    Language: English
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