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  • 1
    Electronic Resource
    Electronic Resource
    Geomagnetic spherical harmonic analysis (1969)
    Springer
    Pure and applied geophysics 75 (1969), S. 117-132 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary An attempt is made to determine the optimum representation of the geomagnetic field in terms of spherical harmonics with regard to the number of parameters required for an adequate accuracy of fit, and considering the effect of allowing for the oblateness of the earth. A representative set of geomagnetic data was subjected to a set of analyses with from 8 to 120 coefficients for both spherical and oblate models of the earth. It is concluded that a sixth order analysis (48 coefficients) with no allowance for oblateness is the most compact representation of the field compatible with tolerable accuracy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00875049
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  • 2
    Electronic Resource
    Electronic Resource
    Lunar tidal componentsN 1 andO 2 in the atmospheric pressure (1970)
    Springer
    Pure and applied geophysics 80 (1970), S. 309-318 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The lunar tidal componentsO 1(p) andN 2(p) in the barometric pressure are determined for several observatories for which long series of data are available in machine readable form. AlsoN 2(p) results are derived from some earlier analyses. The results are compared with those predicted by equilibrium tidal theory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00880216
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  • 3
    Electronic Resource
    Electronic Resource
    Changes in geomagnetic multipole parameters 1942.5–1962.5 (1969)
    Springer
    Pure and applied geophysics 74 (1969), S. 16-22 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary From a smooth series of spherical harmonic coefficients for the geomagnetic potential, the corresponding multipole parameters have been calculated for five epochs from 1942.5 until 1962.5, at five year intervals. Changes in multipole parameters are discussed in relation to the secular variation field and to theSchmidt eccentric dipole.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00875181
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  • 4
    Electronic Resource
    Electronic Resource
    Rotation of the geomagnetic field (reply) (1974)
    [s.l.] : Nature Publishing Group
    Nature 248 (1974), S. 403-405 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DRS MALIN AND SAUNDERS REPLY: Lowes questions our conclusion on the grounds that the pole positions are not sufficiently well determined to show significant departures from the geographical pole. In the absence of a satisfactory method for estimating the standard errors of the pole coordinates ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/248403a0
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  • 5
    Electronic Resource
    Electronic Resource
    Recent Changes in the Magnetic Dipole Moment of the Earth (1967)
    [s.l.] : Nature Publishing Group
    Nature 213 (1967), S. 1110-1110 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The same set of observatories was used at each epoch in order to avoid spurious effects due to different conditioning of the equations. Great care was also taken to remove discontinuities at an observatory due to changes of site or standard. In view of these precautions it is considered that the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2131110a0
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  • 6
    Electronic Resource
    Electronic Resource
    Anomalous Luni-solar Daily Variation in the Geomagnetic Field at Watheroo, Western Australia (1968)
    [s.l.] : Nature Publishing Group
    Nature 218 (1968), S. 941-942 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The data consisted of alternate mean hourly values of D, H and Z, the declination, horizontal component and vertically downward component, respectively, of the geomagnetic field, for the IGY (July 1, 1957, to December 30, 1958). For reasons considered earlier1, the five International Disturbed Days ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/218941a0
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  • 7
    Electronic Resource
    Electronic Resource
    Systematic analysis of magnetic observatory data—I. A proposed method (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 126 (1996), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: With a view to encouraging magnetic observatory staff to make fuller use of their own data, a simple but rigorous method is presented for the determination of coherent, periodic variations from long series of observatory data. The method is readily adaptable to the different types of data published by observatories, is able to cope with gaps in data, is tuneable to any desired frequency and can run on a modest PC. As an illustration of the method, it has been applied to data from the Kandilli Observatory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1996.tb04695.x
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  • 8
    Electronic Resource
    Electronic Resource
    Annual variation of the geomagnetic field (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 124 (1996), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The annual variation of the geomagnetic field is a phenomenon resulting from the movement of the mean latitude of the ring current between summer and winter and is of importance for the determination of deep-mantle conductivity. However, if the annual term is determined from data based on all-day means, it is found to include terms arising from the seasonal variation and modulation of Sq. This effect is investigated both theoretically and experimentally, and it is concluded that the annual variation is best determined from night-time data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1996.tb06361.x
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  • 9
    Electronic Resource
    Electronic Resource
    150th anniversary of Gauss's first absolute magnetic measurement (1982)
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 285-285 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ON 26 May 1832, the horizontal component of the Earth's magnetic field at Gottingen was 1.7820 mg^mnv^s-1 (=17,820 nT). Not particularly remarkable, you might think, except that this was the first ever absolute measurement of the geomagnetic field and its attainment had required much of the armoury ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/297285a0
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  • 10
    Electronic Resource
    Electronic Resource
    Correlation between heart attacks and magnetic activity—a retraction (1980)
    [s.l.] : Nature Publishing Group
    Nature 283 (1980), S. 111-111 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WE recently showed a significant correlation between the daily sums of Kp, the planetary index of geomagnetic activity, and the daily admissions of cardiac emergency cases to the two main hospitals in Hyderabad and Secunderabad1. Richard Peto of the Radcliffe Infirmary, Oxford, has re-examined our ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/283111c0
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