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  • Articles  (604)
  • Springer  (549)
  • Society of Petroleum Engineers
  • 1970-1974
  • 1955-1959  (604)
  • 1956  (604)
  • Geosciences  (604)
  • Architecture, Civil Engineering, Surveying  (41)
Collection
  • Articles  (604)
Years
  • 1970-1974
  • 1955-1959  (604)
Year
Journal
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 34 (1956), S. 260-267 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Summary Average logarithmic profiles of velocity as a function of the velocity on the surface of the Rhine are deduced and also values of the roughness length and the friction velocity («Schubspannungsgeschwindigkeit»). From that the flow of the Rhine can be considered as a turbulent flow over a rough ground. The differences between the different sets of measurements and the average profile of velocity are discussed.
    Abstract: Résumé Des profils logarithmiques verticaux de la vitesse sont déduits en fonction de la vitesse superficielle du Rhin. En outre des valeurs sont données pour le paramètre de grossièreté et pour la vitesse de friction («Schubspannungsgeschwindigkeit»). A cause de ces dates le courant du Rhin peut Être interprété comme un courant se déroulant sur une couche bosselée. Les variations des séries diverses de mesures (comparées au profil moyen) sont discutées.
    Notes: Zusammenfassung Aus Geschwindigkeitsmessungen im Rhein werden mittlere vertikale logarithmische Geschwindigkeitsprofile für verschiedene Oberflächengeschwindigkeiten hergeleitet und daraus Werte für den Rauhigkeitsparameter und die Schubspannungsgeschwindigkeit bestimmt. Danach kann die Strömung im Rhein als turbulente Strömung über einer rauhen Unterlage angesehen werden. Die Abweichungen einzelner Me\reihen von der mittleren Geschwindigkeitsverteilung in der Vertikalen werden diskutiert.
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 35 (1956), S. 8-13 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Summary Taking into account some recent results showing that the observations carried out with Worden gravimeters are influenced by temperature, a method of calibration has been followed which aims to neutralize both the effect of drift and to affort complete symmetry to every value observed.
    Abstract: Résumé En tenant compte de récents resultats qui montrent comme les lectures faites avec les gravimètres Worden soient influencées par la température, on a suivi pour l'étalonnage de ces gravimètres une méthode qui a le but outre que de neutralizer l'effet de la derive, d'assurer la complète symétrie aux valeurs observées.
    Notes: Riassunto Tenendo conto dei risultati di alcune recenti ricerche che mostrano come le letture fatte ai gravimetri Worden siano influenzate dalla temperatura, si è seguito un metodo di taratura che ha il duplice scopo di neutralizzare l'effetto della deriva e di trattare con la massima simmetria ogni singolo valore osservato.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 35 (1956), S. 25-32 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary Disturbances generated by pressure on the surface of a spherical cavity inside (i) a dispersive medium, (ii) a medium having transverse isotropy about the radius vector have been considered. Finally, a brief discussion of the propagation of waves in visco-elastic media has been added.
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  • 4
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Summary Basing himself on the principle that a system of observations of different precision may be reduced to a system of observations of the same precision, the Author proposes a new formula for a valuation of the standard error of the weight unit. Such formula is not nullified in case of measurements which, though of different weights, are equal. — In the second part the Author puts forward the hypothesis that a geometric aspect of the compensation of different kinds of measures, is of transforming a figure, wich satisfies given conditions, into another by the least deformation. He believes that such least deformation may be obtained without making a linear combination of linear and angular squared errors.
    Notes: Riassunto L'A., partendo dal principio che un sistema di osservazioni di diversa precisione è riducibile a un sistema di osservazioni di uguale precisione, propone una nuova formula per la valutazione dell'errore medio dell'unità di peso. Tale formula non si annulla nel caso di misure che, pur essendo di peso diverso, sono uguali fra loro. — Nella seconda parte l'A. avanza l'ipotesi che un aspetto geometrico della compensazione di misure miste sia quello di trasformare una figura in un'altra, soddisfacente prefissate condizioni, con un minimo di deformazione; ritiene che tale minimo possa anche non essere dato da una combinazione lineare dei quadrati degli errori lineari e angolari.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 35 (1956), S. 14-24 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Summary In connection with my last paper (7) the interpretation of seismic travel-time surfaces ψ(r) for refracted rays is given under the assumption that ψ(r) is a power serie with a finite number of terms. With the results two typical examples are treated. Finally theHerglotz solution is given in a new form.
    Notes: Zusammenfassung Es wird im Anschluss an meine letzte Arbeit (7) dargelegt, wie man seismische Refraktionsmessungen in einem einachsig inhomogenen Körper mit abgebrochenen Potenzreihen als Laufzeitflächen auswerten kann. Das Verfahren wird an zwei Beispielen aus der Praxis erprobt und gleichzeitig ergänzend erläutert. Abschliessend wird durch einen Vergleich mit der neuen Theorie dieHerglotz'sche Lösung in einer neuen Form dargestellt.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 35 (1956), S. 33-39 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The reflection segments determined by computations based on the method of images, as is well known, are lying to high for greater dips (not taking into account refraktion effects). For the case of the top layers being horizontal, the true dip of a deeper reflection segment is determined and subsequently a graphical method given enabling quick locating of the true position. For the case that, from a certain depth downward, the velocity will be constant, the angular correction can be read from a nomogram. Finally, the question is discussed when corrections will be allowed to be neglected.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 35 (1956), S. 54-60 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Summary The continuous measurements of ozone concentration near ground level when compared with the daily values of total atmospheric ozone did not show any correlation what so ever. The quantity of ozone near the ground, however seems to have a negative correlation with the number of cases of temperature inversion in the lower atmosphere. The annual variations in the two cases are comparable but the ground level ozone shows another minimum in the month of june when the air at the recording station usually comes from Paris and so, is strongly polluted.
    Notes: Résumé L'enregistrement continu de la concentration de l'ozone au sol, comparé jour par jour aux valeurs de l'épaisseur réduite de l'ozone total n'a montré aucune corrélation significative entre les deux grandeurs. Une corrélation négative a été constatée entre la quantité d'ozone au sol et le nÒmbre des cas d'inversion dans les couches basses de l'atmosphère. Les variations saisonnières sont cependant analogues, mais l'ozone au sol montre un autre minimum très net au mois de juin, lorsque l'air vient en direction de l'agglomération parisienne.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 35 (1956), S. 49-53 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary Numerical results are given which show the way in which thc Curie temperature moves inwards from the margin during the cooling of a thick intrusive sheet. The time taken to move from the margin to the centre varies as the square of the thickness of the sheet, being about 6500 years for a sheet 1000 m thick on reasonable assumptions as to the thermal properties of the material. This implies that the secular variation of the Earth's magnetic field over periods of time of 1000 years or more may be studied by measuring the directions of magnetisation at a series of points across the thickness of such a sheet. Some measurements on a Tasmanian sill about 430 m thick of Jurassic or Cretaceous age suggest a change from maximum to minimum inclination in a time of about 200 years. Since the margins of the sill are not available this figure may be considerably in error but the results suggest the general practicability of the method.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 35 (1956), S. 40-48 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Summary This report covers four geomagnetic campaigns in the region of the Antarctic Peninsula, the adjacent islands and the Weddell Sea during the summer seasons of the years 1951 to 1956. The instrumental equipment was slightly modified to meet antarctic conditions in general, specially for transport to stations distant from the bases. In most antarctic points observations were made with both magnetometers QHM and BMZ which were compared at observatory and base stations by means of theodolite and earth inductor. The field measurements show the presence of many anomalies, some of which quite strong. The values observed in the southernmost area of the Weddell Sea differ appreciably from the figures given on world magnetic charts, which for some regions seem to be based on extrapolation or potencial computations. The secular change in declination is small but those in intensities are rapid, especially in the vertical component, confirming some previous indications. The results are tabulated and the position of the observation stations is shown on a map.
    Notes: Resumen Se exponen los resultados de cuatro campañas geomagnéticas llevadas a cabo entre 1951 y 1956 en la mencionada región del Antártico señalando el éxito obtenido mediante el uso del equipo instrumental compuesto por bien contrastados magnetómetros de QHM y BMZ en lugares de difícil acceso y condiciones severas. El campo medido se presenta con la existencia de muchas anomalías, a veces bastante fuertes, que se observan generalmente en las componentes de la intensidad. Es además notable el hecho de que los datos medidos directamente en la parte meridional extrema del Mar de Weddell, difieren de los que dan las cartas magnéticas mundiales extrapolados o calculados parcialmente en base a la teoría del potencial. Se confirma el rápido cambio secular en las intensidades, especialmente en la componente vertical, siendo en vez lento el cambio en la declinación. La situación de los puntos de observación y los resultados numéricos se dan en un mapa y una tabla de valores respectivamente.
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 35 (1956), S. 61-72 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary Treating the ionosphere as a sharply bounded ionized medium, sky wave field intensities are calculated by geometrical-optical methods for very low radio frequencies. The reflection coefficients are discussed in some detail and the numerical data are compared with experiment.
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