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  • 1
    facet.materialart.
    Unknown
    Reflexionsseismik unter Tage (1979)
    In:  Glückauf, Kobe, Dec. 6-11, 1993, The Local Organizing Committee for the CRCM '93, vol. 115, no. 13, pp. 818-820, pp. 1517, (ISSN: 1340-4202)
    Details
    Publication Date: 1979
    Keywords: Seismics (controlled source seismology) ; Mining geophysics ; Channel waves ; Ruter
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Unknown
    An introduction to the problems of the Ruhr area (1978)
    Soc. Explorat. Geophys.
    In:  Paper presented at the 48th SEG Meeting, San Francisco, Soc. Explorat. Geophys., vol. 1034, no. 2-90/91, pp. I44-I60, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: Mining geophysics ; Review article ; Ruter
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
    Electronic Resource
    Electronic Resource
    INVESTIGATION OF THE SEISMIC RESPONSE OF CYCLICALLY LAYERED CARBONIFEROUS ROCK BY MEANS OF SYNTHETIC SEISMOGRAMS (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 26 (1978), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Seismic exploration for coal as well as basic scientific research indicate the existence of unsolved problems. These problems arise partly because the requirements are different from those in exploration for gas and oil and are partly due to the geological situation. The medium to be investigated is composed of cyclically changing layers with extremely high velocity and density contrast. Furthermore, the structure of the carboniferous rock is highly fractured and folded. This leads to difficulties in interpreting the seismic response of carboniferous rock. To overcome these difficulties synthetic seismograms are a useful tool.Calculating synthetic seismograms the carboniferous rock has been modelled as a sequence of seams and rock. The following results have been obtained〈list xml:id="l1" style="custom"〉(i)A single seam gives rise to a distinct reflection signal even for a thickness of 1/50 of the wavelenght.(ii)Individual reflections are not visible from a sequence of layers containing a great number of seams and interfaces. Due to constructive interference only a few high amplitudes appear. These high amplitudes are labelled “interference reflections”.(iii)With increasing travel time the interference reflections are mainly composed of short lag multiples such that the primary reflections have no significant influence.(iv)The sequence of seams acts on the reflected seismic signal as a high pass filter and on the transmitted signal as a low pass filter. The cut-off frequencies are determined by the average seam thickness, and the steepness of the slopes increases with increasing number of seams.(v)The interference reflections can be used for determining the geological structure at least for the upper part of the sequence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1978.tb01576.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Nuclear orientation of106Rh in iron (1977)
    Springer
    Hyperfine interactions 3 (1977), S. 479-485 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The anisotropy of γ-rays from the decay of oriented106Rh nuclei was studied at temperatures between 14 and 100 mK. The ground state magnetic moment was determined to be |μ(1+)|=3.07(9) n.m. Incomplete orientation was observed which is assumed to result from relaxation during the 43 s lifetime of the decaying nucleus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01021578
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  • 5
    Electronic Resource
    Electronic Resource
    Nuclear orientation of178Ta(1+, 9.3m) in iron (1978)
    Springer
    Hyperfine interactions 4 (1978), S. 206-210 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01021826
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  • 6
    Electronic Resource
    Electronic Resource
    Nuclear orientation of105Rh and95Tc in iron (1977)
    Springer
    Hyperfine interactions 3 (1977), S. 157-169 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The temperature-dependent anisotropy of γ-rays following the decay of oriented95Tc and105Rh nuclei was studied with a Ge(Li) detector. Mixing coefficients of some γ-and preceding β-transitions, the spins of two intermediate levels, and the magnetic hyperfine splitting of the95Tc and105Rh ground states in an Fe host were measured. From the known hyperfine fields the following magnetic moments were deduced: $$\begin{gathered} \mu \left( {^{105} Rh,\tfrac{{7 + }}{2}} \right) = 4.34\left( {12} \right) n.m.; \hfill \\ \mu \left( {^{95} Tc,\tfrac{{9 + }}{2}} \right) = 5.82\left( {12} \right)n.m. \hfill \\ \end{gathered}$$
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01021547
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