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  • Seismology
  • Industrial Chemistry
  • Inorganic Chemistry
  • Springer  (10)
  • 2020-2023
  • 1975-1979  (8)
  • 1965-1969
  • 1960-1964
  • 1950-1954  (2)
  • 1
    Digitale Medien
    Digitale Medien
    Eine Verbesserung von Alsops Methode zur Bestimmung der Reflexions- und Transmissionskoeffizienten von Oberflächenwellen (1979)
    Springer
    Pure and applied geophysics 117 (1979), S. 1045-1049 
    Details
    ISSN: 1420-9136
    Schlagwort(e): Seismology ; Surface waves
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Physik
    Beschreibung / Inhaltsverzeichnis: Summary Alsop's method (1966) for the non-normal passage of surface waves through a vertical discontinuity is improved by using a new functional to be made stationary on the plane of discontinuity. The modified functional has the dimension of an energy flux and is characterized by the discontinuous surface wave displacements and stresses on the vertical discontinuity. Model calculations which were carried out for SV-waves and Love waves show that the new version of Alsop's method yields in all respects more consistent results than the old one.
    Notizen: Zusammenfassung Die Methode von Alsop (1966) für den Durchgang von schräg einfallenden Oberflächenwellen durch eine vertikale Diskontinuität wird durch Verwendung eines neuen Funktionals, das auf der Diskontinuitätsfläche stationär sein soll, verbessert Das modifizierte Funktional hat die Dimension eines Energieflusses und wird durch diejenige Spannungs- und Verschiebungsdiskontinuität charakterisiert, die durch das Oberflächenwellenfeld auf der Diskontinuitätsfläche erzeugt wird. Modellrechnungen für SV-Wellen und Lovewellen zeigen, daß die neue Version von Alsoos Verfahren in jeder Hinsicht konsistentere Ergebnisse als die bisherige liefert.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00876084
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 2
    Digitale Medien
    Digitale Medien
    Higher mode dispersion measurement (1978)
    Springer
    Pure and applied geophysics 116 (1978), S. 1274-1283 
    Details
    ISSN: 1420-9136
    Schlagwort(e): Seismology ; Surface-wave dispersion ; Higher mode surface waves ; Italy, phase vel. of surface waves
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Physik
    Notizen: Abstract A new method is presented for the determination of higher mode dispersion over small distances, using two stations. From an intermediate focus earthquake it has been possible to measure the dispersion of the first and second Rayleigh modes in the period range 25–35 sec and 25–70 sec respectively. Using the almost linear array of Italian long-period stations TRI, BLZ, OLB an estimate of the average errors is also made.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00874686
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    An upper mantleP-wave velocity model for eastern and southern Africa (1978)
    Springer
    Pure and applied geophysics 116 (1978), S. 1262-1273 
    Details
    ISSN: 1420-9136
    Schlagwort(e): Seismology ; African Rift ; P-wave velocity beneath Africa ; Upper mantle structure for Africa
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Physik
    Notizen: Abstract AP-wave velocity model for the upper mantle beneath eastern and southern Africa is proposed. The top 250 km of the model is characterized by relatively low velocities similar to those deduced for the upper mantle beneath the western United States of America. At greater depths, the velocities gradually change to normal mantle values.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00874685
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 4
    Digitale Medien
    Digitale Medien
    Transient disturbance produced in an elastic half-space by impulsive shearing traction distributed over a circular region (1978)
    Springer
    Pure and applied geophysics 116 (1978), S. 198-211 
    Details
    ISSN: 1420-9136
    Schlagwort(e): Seismology ; theoretical ; Cagniard's technique ; Elastic waves produced by shearing traction
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Physik
    Notizen: Abstract The displacement produced in a semi-infinite, homogeneous, isotropic elastic medium by the application of shearing traction over a circular portion of the half-space has been evaluated in exact form by Cagniard's Technique (Cagniard, 1962;Gakenheimer andMiklowitz, 1969).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00878993
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 5
    Digitale Medien
    Digitale Medien
    Contribution to phase velocity investigations of Rayleigh-waves in middle Europe (1978)
    Springer
    Pure and applied geophysics 116 (1978), S. 1299-1306 
    Details
    ISSN: 1420-9136
    Schlagwort(e): Seismology ; Rayleigh wave dispersion ; Phase velocity of Rayleigh waves ; German Dem. Rep., Rayleigh waves
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Physik
    Notizen: Summary The phase velocity curve of Rayleigh-waves is determined for a profile crossing the area of GDR from south to north. Two different methods of seismogram processing are used which are discussed in detail. The phase velocities found are checked for compatibility. An inversion of a common phase velocity curve is done by using hedgehog procedure.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00874688
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 6
    Digitale Medien
    Digitale Medien
    Determination of focal coordinates of near earthquakes in an area of unknown crustal parameters (1977)
    Springer
    Pure and applied geophysics 115 (1977), S. 667-673 
    Details
    ISSN: 1420-9136
    Schlagwort(e): Seismology ; Hypocenter determination ; Focal coordinate determination ; Near earthquakes location
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Physik
    Notizen: Summary A new computation method is described which determines the focal coordinates, theP n-andP G-velocity, the focal time and the Moho-depth in the case of near earthquakes. The method is provided especially for areas where the crustal parameters are insufficiently known. It presumes that the standard error ofP n-andP G-arrival times is a minimum. The problem turns out to represent the solution of a set of at least seven equations with seven unknown parameters. Four of these unknowns can be separated in advance. This leads to a considerable simplification. The three remaining unknowns are the focal coordinates. Their best fitting values are found by the gradient method. An example is presented which shows how errors can arise if the initial trial coordinate is chosen at an unfavourable position.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00876131
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 7
    Digitale Medien
    Digitale Medien
    A lithospheric model to interpret focal properties of intermediate and shallow shocks in central greece (1977)
    Springer
    Pure and applied geophysics 115 (1977), S. 655-666 
    Details
    ISSN: 1420-9136
    Schlagwort(e): Seismology ; Greece ; Plate tectonics ; Focal mechanism
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Physik
    Notizen: Summary An attempt has been made to interpret the striking difference, in focal properties, between the intermediate and shallow earthquakes in Central Greece and an observed time sequence of these shocks by a lithospheric model. This model consists of a lithospheric slab descending from the Ionian to the Aegean and a back-arc expanding Aegean lithosphere. Thrust faulting near the top surface of the slab, caused by the sinking of the slab, triggers spreading and normal faulting in the back-arc Aegean region.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00876130
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 8
    Digitale Medien
    Digitale Medien
    Systematic variations of mean travel-time residuals in space and time (1977)
    Springer
    Pure and applied geophysics 115 (1977), S. 675-692 
    Details
    ISSN: 1420-9136
    Schlagwort(e): Seismology ; P wave residuals ; Travel-time anomalies ; Earthquake prediction
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Physik
    Notizen: Summary Mean travel-time residuals of P waves for the period 1964–1970 at stations in North America and Europe are well separated into large domains of positive and negative values. The spatial distribution of residuals in North America is in good agreement with the structure of the upper mantle obtained from Rayleigh wave dispersion and is in accord with magnitude anomalies and heat flow data. A systematic variation of residuals in time is found to be sensitive to major changes in the nature of the earthquake source distribution, as for example aftershocks, as well as to changes in methods of detection of first arrivals. Residuals at neighboring stations are correlated up to distances of the order of 2°. Half year mean residuals at stations within 2° distance from the epicenters of strong earthquakes have a sudden jump 1.5 years before the occurrence of an earthquake. A formal algorithm based on this pattern permits prediction of the times of all 16 earthquakes with magnitudeM≥7.5 occurring during the interval 1966–1972. Although the average duration of the alarm periods is about half the total time interval of the catalog, so that the algorithm has no practical importance, these results are statistically significant on a 99% level of confidence.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00876132
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 9
    facet.materialart.
    Unbekannt
    Seismizität der Erde (1952)
    Springer
    In:  Professional Paper, Landolt Börnstein (6. Edition) III. Band: Astronomie und Geophysik, Berlin, Springer, vol. 7, no. XVI:, pp. 369-375, (ISBN: 3-540-23712-7)
    Details
    Publikationsdatum: 1952
    Schlagwort(e): Seismology ; Seismicity
    Standort Signatur Erwartet Verfügbarkeit
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    BIBLIOGRAFIE SEISMOLOGIE
  • 10
    facet.materialart.
    Unbekannt
    Erdbebenwellen (1952)
    Springer
    In:  Professional Paper, Landolt Börnstein (6. Edition) III. Band: Astronomie und Geophysik, Berlin, Springer, vol. 7, no. XVI:, pp. 375-384, (ISBN: 3-540-23712-7)
    Details
    Publikationsdatum: 1952
    Schlagwort(e): Seismology ; Waves
    Standort Signatur Erwartet Verfügbarkeit
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    BIBLIOGRAFIE SEISMOLOGIE
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