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  • 1
    Electronic Resource
    Electronic Resource
    Some isotopic and hydrological changes associated with the 1999 Chi-Chi earthquake, Taiwan (2005)
    Melbourne, Australia : Blackwell Science Pty
    The @island arc 14 (2005), S. 0 
    Details
    ISSN: 1440-1738
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Abstract  The changes in the isotopic composition of, and the groundwater level in, the Choshui River alluvial fan near the ruptured Chelungpu Fault during and following the 1999 (Mw = 7.5) Chi-Chi earthquake in Taiwan are reported. Three aspects of the hydrological changes are noticed. First, following the Chi-Chi earthquake, the lower aquifers beneath the Choshui River fan showed a significant shift in isotopic composition towards that of the surface water in the Choshui River, suggesting enhanced exchanges of water between the river and the groundwater. Second, in some wells, water levels and isotopic compositions in different aquifers converged to the same respective values during the Chi-Chi earthquake, suggesting coseismic exchanges of water between the different aquifers, which implies enhanced permeability due perhaps to the fracturing and breaching of aquitards between the aquifers. Third, the pattern of the coseismic water-level response is distinctly different from that of the shift in the isotopic composition, suggesting that they were produced by different mechanisms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1440-1738.2004.00456.x
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  • 2
    Electronic Resource
    Electronic Resource
    Dynamic uplift of the Himalaya (1982)
    [s.l.] : Nature Publishing Group
    Nature 298 (1982), S. 553-556 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Gravity surveys along a 1,200 km highway across central and eastern Tibet, from Yadong (27.88 N, 88.56E) to Golmud(36.22 N, 94.55E), were carried out in 1975-77. Figure 1 shows the topography and the Bouguer gravity anomaly along this route. North of the Zangbo River, Tibet is characterized by a ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/298553a0
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  • 3
    Electronic Resource
    Electronic Resource
    Phase Change in the Upper Mantle above 350 km (1970)
    [s.l.] : Nature Publishing Group
    Nature 227 (1970), S. 938-940 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A number of empirical equations which relate densities of common rocks and minerals with velocities of com-pressional waves4-6 show that velocity is linearly proportional to density Vp=A+B (1) where B has a value of about 3 (km/s)/(g/cm3). This relation has been applied to the calculation of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/227938a0
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  • 4
    Electronic Resource
    Electronic Resource
    Equation of State of Periclase and Birch's Relationship between Velocity and Density (1968)
    [s.l.] : Nature Publishing Group
    Nature 218 (1968), S. 74-76 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Birch's postulate may be tested by comparing (1) with the equation of state of periclase (in terms of C and ) for which both shock-wave data to 126 mbar and precise ultrasonic data to 4 kbar have become available5,6. The experimental Hugoniot of periclase, in terms of shock velocity Us and particle ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/218074a0
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  • 5
    Electronic Resource
    Electronic Resource
    “Westward Drift” of the Satellite Geoid (1966)
    [s.l.] : Nature Publishing Group
    Nature 211 (1966), S. 504-504 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The longitudinal positions of the maxima and minima of satellite geoids determined by various authors are not consistent among themselves. For purposes of comparison, a few of the available results are listed in Table 1. Approximate locations Gulf of Calif, (min) Andes (max) Guinea Basin (min) ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/211504b0
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  • 6
    Electronic Resource
    Electronic Resource
    Sensitivity of earthquake cycles on the San Andreas fault to small changes in regional compression (1997)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 388 (1997), S. 158-161 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The current pattern of slip, within the San Andreas fault system in the San Francisco Bay area is distinctly different from the long-term slip pattern inferred from the geological record,. This difference is not surprising because geological data record the accumulated displacements over many ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/388158a0
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  • 7
    Electronic Resource
    Electronic Resource
    Thermal structure of the Barbados accretionary complex (1988)
    Springer
    Pure and applied geophysics 128 (1988), S. 749-766 
    Details
    ISSN: 1420-9136
    Keywords: Accretionary complex ; thermal structure ; Barbados
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Finite element modeling of the thermal structure within the Barbados subduction complex is carried out. Kinematics of the sediments inside the complex are computed from a viscous model with inhomogeneous viscosity and the effect of gravity. The model yields an uplift rate compatible with observational data. Advective heat transfer affects the heat flow across the complex. Imbricated thrust faulting further reduces the heat flow across the slope. These mechanisms predict an arcward decrease of heat flow on the lower slope, followed by an increase of heat flow approaching the ridge, little change in heat flow at the forearc basin, and a significant increase of heat flow near the volcanic are, in agreement with the existing observations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00874555
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  • 8
    Electronic Resource
    Electronic Resource
    Velocity ratios for rocks with oriented microcracks (1974)
    [s.l.] : Nature Publishing Group
    Nature 248 (1974), S. 579-580 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We analysed the data provided by Johnson and Wenk and found that, at 95% confidence interval, the mean values of the ratios between the velocities of the compressional waves and shear waves are: along the a direction, an//3ab = 1.42 ± 0.02 and aa/jBac = 1.65 ± 0.03; along the b ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/248579a0
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  • 9
    Electronic Resource
    Electronic Resource
    Earthquake prediction and oriented microcracks in rocks (1974)
    [s.l.] : Nature Publishing Group
    Nature 251 (1974), S. 405-406 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Aggarwal et al.3 have found, however, instances in which there are no observable variations in travel times before earthquakes. They have also observed cases in which there was a clear decrease in velocity. McEvilly and Johnson4 found no variations in velocities before earthquakes in central ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/251405a0
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  • 10
    Electronic Resource
    Electronic Resource
    Shear Elastic Constant C 44 and Phase Transformation of KCl (1973)
    [s.l.] : Nature Publishing Group
    Nature 243 (1973), S. 284-285 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The high pressure apparatus is of the Bridgman type6,7, capable of generating hydrostatic pressure up to 30 kbar. The pressure-transmitting medium was 2-methylbutane. Pressures up to 4 kbar were measured by a Heise gauge calibrated against a free piston gauge. Above 4 kbar, a manganin resistance ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/243284a0
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