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  • Articles  (39,799)
  • 1950-1954  (24,012)
  • 1945-1949  (15,787)
  • Geosciences  (25,195)
  • Computer Science  (14,604)
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  • Articles  (39,799)
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  • 11
    Electronic Resource
    Electronic Resource
    APPLICATION OF VERTICAL GRADIENTS AND COMPARISON OF DIFFERENT GEOPHYSICAL METHODS IN A DIFFICULT AREA (1953)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 1 (1953), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Seismic reflection, telluric and gravity results are given for the lifted area of Ferrara, in Northern Italy. The agreement is shown between the available shallow seismic data and the gravity evidences. For a portion of the above area where seismic results are particularly poor the vertical gradients method gives a resolution of a gravity anomaly and confirms the telluric information. The residual gravity values, the vertical gradients and the telluric data along a seismic line crossing the zone are compared with seismic results and with evidences from adjacent wells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1953.tb01142.x
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  • 12
    Electronic Resource
    Electronic Resource
    POSSIBILITIES OF CONSTRUCTING TRUE RAY PATHS IN REFLECTION SEISMIC INTERPRETATION (1953)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 1 (1953), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Investigations into reflection seismic on the salt structure of Heide raised the following questions:〈list xml:id="l1" style="custom"〉1) How can the different directions of trend of a series of layers be established?2) How are the contour maps of reflecting horizons to be constructed if there is no general trend of the layers?To answer these questions, the case of the subsoil consisting of a series of layers with plane reflecting beds and constant layer-velocities is treated strictly. The strike lines of the reflecting planes may be at any angle whatever. However, formulas for constructing contour maps of the reflecting planes have been derived. With these formulas, the problem quoted under 1) has also been solved.The construction of contour maps is given.For special cases, formulas are obtained which have already been proved by others.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1953.tb01136.x
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  • 13
    Electronic Resource
    Electronic Resource
    SUR LE CALCUL DE L'INFLUENCE GRAVIMETRIQUE DES STRUCTURES DEFINIES PAR LES ISOBATHES (1953)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 1 (1953), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: The triple integral for the attraction of a mass on a point is transformed in a double sum. This double sum serves to construct a graph for the rapid determination of the gravimetric influence of structures given by depth contours. The influence of topography can also be computed with this graph.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1953.tb01130.x
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  • 14
    Electronic Resource
    Electronic Resource
    EXTENSION TO THREEDIMENSIONAL PROBLEMS CONCERNING AN APPROXIMATE CORRECTION METHOD FOR REFRACTION IN REFLECTION SEISMIC PROSPECTING (1954)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 2 (1954), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: The formulas derived by the author in a preliminary paper for taking into consideration refraction when dealing with the problem of a vertical plane are extended to the three-dimensional case. Vector analysis is extensively applied. Among others it is shown that in the general case the 3 horizontal twodimensional vectors, i.e.〈list xml:id="l1" style="custom"〉1) the gradient of the time of reflection2) the direction of true dip3) the vector from the shot point to the projection of the reflecting point, point into 3 different directions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1954.tb01280.x
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  • 15
    Electronic Resource
    Electronic Resource
    DIE ABHÄNGIGKEIT DES SCHEINBAREN WIDERSTANDES VOM SONDENABSTAND BEI DER VIERPUNKT-METHODE (1954)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 2 (1954), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: The dependence of the apparent resistivity on the distance between the potential electrodes is examined and a numerical method is described permitting quantitative calculations. Such a numerical relation is also established for the transformation of Wenner graphs into Schlumberger graphs.In addition it is shown, in which manner the jumps in observed Schlumberger curves, that result from changing the probe spacing, must be smoothed out.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1954.tb01291.x
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  • 16
    Electronic Resource
    Electronic Resource
    ROLE JOUÉ PAR LA CORRECTION LUNI-SOLAIRE EN PROSPECTION GRAVIMETRIQUE (1954)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 2 (1954), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: The luni-solar corrections are considered under the three following aspects:Quality of results: the application of tidal corrections to all stations is pointless as long as the operations do not substantially exceed two hours.Working conditions: it seems possible to increase the duration of programs without any loss of precision, but operating in such a way requires particular care.Behaviour of gravity meters: the introduction of tidal corrections allows to separate three kinds of instrumental drifts; a good knowledge of the mean operational drift enables to appreciate the quality of a given set of measurements.An example is given to show the possibility in some cases to detect small errors which are close to the limit of precision of the instrument.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1954.tb01295.x
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  • 17
    Electronic Resource
    Electronic Resource
    HYDROLOGICAL SURVEYS IN THE CATANIA AREA BY MEANS OF ELECTRICAL SOUNDINGS (1954)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 2 (1954), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Exploration of the Catania region was carried out for over a year by means of electrical soundings. The thickness of the overburden (lava and alluvium) was thus computed and the contour map of the blue clays basement shows the existence of several buried channels where new wells were drilled, all of them successful.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1954.tb01288.x
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  • 18
    Electronic Resource
    Electronic Resource
    A RESISTIVITY INVESTIGATION INTO A WASHOUT FEATURE IN COAL MEASURE STRATA (1954)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 2 (1954), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: The paper consists of an account of a resistivity investigation into an old river valley in Coal Measure strata. This valley denuded several of the upper coal seams leaving behind unconsolidated material and it was the purpose of the work to be described to investigate how far the extent and nature of this material could be determined by resistivity methods conducted at the surface.As such the survey fits into a wider programme of research instigated by the National Coal Board.The feature, which is quite well known geologically, was surveyed by conventional methods and the results obtained are discussed in relation to the above project.Thus, the investigations succeeded in tracing the approximate centre line of the feature and in yielding some information on the nature and order of thickness of the deposits. Limitations of the method and its future application are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1954.tb01277.x
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  • 19
    Electronic Resource
    Electronic Resource
    THE PREPARATION OF PAPERS FOR “GEOPHYSICAL PROSPECTING” AND THEIR PRESENTATION AT TECHNICAL MEETINGS (1954)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 2 (1954), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: The efficient production of “Geophysical Prospecting” depends upon the co-operation of the individual authors and this paper serves as a guide for them. Some suggestions are also made on the presentation of papers at meetings in the hope of promoting successful discussions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1954.tb01290.x
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  • 20
    Electronic Resource
    Electronic Resource
    WHAT IS OUR CONTRIBUTION? (1954)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 2 (1954), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1954.tb01285.x
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