Abstract
A joint Discussion Meeting of the Royal Astronomical Society and the Royal Irish Academy, held on January 11th, 1991, commemorated the establishment of some early magnetic observatories, discussed recent research using global geomagnetic data and described the present status of magnetic observatories in the United Kingdom. The observatory and instruments at the Dublin magnetic observatory; the origins of the Greenwich magnetic observatory, and why it eventually had to be resited; and the history of the Munich magnetic observatory formed the historical part of the proceedings. Current research topics discussed were the geomagnetic secular variation and deep Earth structure and dynamics; fluid flow patterns near the top of the core; the origin of the annual variation of the geomagnetic field; results of an analysis of monthly means from some British observatories; a new theory of the geomagnetic daily variation; and the interactions between ionospheric science and geomagnetism. The present-day observatory scene was described in terms of the information that can be derived from the almost 40 year series of data from Hartland magnetic observatory; of the methods used to process data from the three UK magnetic observatories, which nowadays are operated automatically and remotely; and (a look into the future) of a new project, INTERMAGNET, which aims to make available, in near real time, data from the world-wide network of magnetic observatories.
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References
Acheson, D. J. and Hide, R.: 1973, ‘Hydromagnetics of Rotating Fluids’,Rep. Progress Phys. 36, 159–221.
Anon: 1923, ‘The Greenwich Magnetic Observatory. Proposed Removal to Holmbury Hill’,Nature 112, 345–346.
Backus, G. E.: 1968, ‘Kinematics of Geomagnetic Secular Variation in a Perfectly Conducting Core’,Phil. Trans. R. Soc., London A263, 239–266.
Backus, G. E. and Gilbert, J. F.: 1968, ‘The Resolving Power of Gross Earth Data’,Geophys. J. R. Astr. Soc. 16, 169–205.
Banks, R. J.: 1969, ‘Geomagnetic Variations and the Conductivity of the Upper Mantle’,Geophys. J. R. Astr. Soc. 17, 457–487.
Barraclough, D. R. 1985, ‘Halley's Atlantic Magnetic Surveys’ in Schröder, W. (ed.),Historical Events and People in Geosciences, European University Studies, Series 29:Interdepartmental Congress Reports,2, 163–183, Frankfurt am Main: Peter Lang.
Barraclough, D. R.: 1987, ‘International Geomagnetic Reference Field: the Fourth Generation’,Phys. Earth Planet. Inter. 48, 279–292.
Bauer, L. A.: 1902, ‘Notice of Magnetic Disturbance During Eruption of Mont Pelée, Martinique’,Terr. Magn. Atmos. Electr. 7, 57–58.
Beblo, M.: 1990, ‘A Digital Magnetometer System Using Conventional Variometers and Opto-Electronic Converters’,Phys. Earth Planet. Inter. 59, 82–89.
Beblo, M. and Soffel, H. (Eds.): 1991, ‘150 Years Geomagnetic Observatories München-Maisach-Fürstenfeldbruck’,Münchner Geophys. Mitteilungen, Münchner Univers. Schriften, ISSN 0931-2145, 5.
Benton, E. R.: 1981, ‘Inviscid, Frozen-Flux Velocity Components at the Top of Earth's Core from Magnetic Observations at Earth's Surface: Part I. A New Methodology’,Geophys. Astrophys. Fluid Dynamics 18, 157–184.
Benton, E. R. and Whaler, K. A.: 1983, ‘Rapid Diffusion of the Poloidal Geomagnetic Field through the Weakly Conducting Mantle: a Perturbation Solution’,Geophys. J. R. Astr. Soc. 75, 77–100.
Bloxham, J. and Gubbins, D.: 1985, ‘The Secular Variation of the Earth's Magnetic Field’,Nature 317 777–781.
Bloxham, J. and Gubbins, D.: 1986, ‘Geomagnetic Field Analysis IV —Testing the Frozen-Flux Hypothesis’,Geophys. J. R. Astr. Soc. 84, 139–152.
Booker, J. R.: 1969, ‘Geomagnetic Data and Core Motions’,Proc. R. Soc., London A309, 27–40.
Cain, J. C., Hendricks, S. J., Langel, R. A., and Hudson, W. V. 1967, ‘A Proposed Model for the International Geomagnetic Reference Field—1965’,J. Geomagn. Geoelectr. 19, 335–355.
Courtillot, V. and Le Mouël, J. L.: 1976, ‘On the Long Period Variations of the Earth's Magnetic Field from 2 Months to 20 Years’,J. Geophys. Res. 81, 2941–2950.
Currie, R. G.: 1966, ‘The Geomagnetic Spectrum—40 Days to 5.5 Years’,J. Geophys. Res. 71, 4579–4598.
Gire, C. and Le Mouël, J. L.: 1990, ‘Tangentially Geostrophic Flow at the Core-Mantle Boundary Compatible with the Observed Geomagnetic Secular Variation: the Large Scale Component of the Flow’,Phys. Earth Planet. Interiors 59, 259–287.
Gire, C., Le Mouël, J. L. and Madden, T.: 1986, ‘Motions at the Core Surface Derived from SV Data’,Geophys. J. R. Astr. Soc. 84, 1–29.
Griffin, R. F., Andrews, P. J., Pooley, G. G., and Smith, R. C.: 1980, ‘In Celebration of Volume 100’,Observatory 100, 125–131.
Gubbins, D., Thomson, C. J., and Whaler, K. A.: 1982, ‘Stable Regions in the Earth's Liquid Core’,Geophys. J. R. Astr. Soc. 68, 241–251.
Hide, R.: 1966, ‘Free Hydromagnetic Oscillations of the Earth's Core and the Theory of the Geomagnetic Secular Variation,’Phil. Trans. R. Soc., London A259, 615–650.
Hide, R.: 1978, ‘How to Locate the Electrically Conducting Fluid Core of a Planet from External Magnetic Observations’,Nature 271, 640–641.
Hide, R.: 1989, ‘Fluctuations in the Earth's Rotation and the Topography of the Core-Mantle Interface’,Phil. Trans. R. Soc., London A328, 351–363.
Hide, R.: 1990, ‘Angular Momentum Transfer at the Core-Mantle Interface,’Surveys in Geophysics 11, 340–343.
Hide, R. and Malin, S. R. C.: 1981, ‘On the Determination of the Size of the Earth's Core from Observations of the Geomagnetic Secular Variation’,Proc. R. Soc., London A374, 15–33.
Hide, R. and Roberts, P. H.: 1979, ‘How Strong is the Magnetic Field in the Earth's Liquid Core?’,Phys. Earth Planet. Interiors 20, 124–126.
Hide, R. and Stewartson, K.: 1972, ‘Hydromagnetic Oscillations of the Earth's Core’,Rev. Geophys. Space Phys. 10, 579–598.
Jackson, A. A.: 1978,London's Local Railways, Newton Abbot: David and Charles, p. 253.
Jones, T. B. and Spracklen, C. T.: 1974, ‘Ionospheric Effects of the Flixborough Explosion’,Nature 250, 719–720.
Kaiser, T. R.: 1962, ‘The First Suggestion of an Ionosphere’,J. Atmos. Terr. Phys. 24, 865.
Kerridge, D. J. and Harris, T. J.: 1988, ‘GIFS: the Geomagnetism Information and Forecast Service’,Brit. Geol. Surv. Tech. Rept. WM/88/16.
Lloyd, H.: 1842,Account of the Magnetical Observatory of Dublin, and of the Instruments and Methods of Observation Employed There, 54 pp. Dublin: University Press.
McConnell, A.: 1986,Geophysics and Geomagnetism, Catalogue of the Science Museum Collection, 45 pp., London: Her Majesty's Stationery Office.
Malin, S. R. C. and Barraclough, D. R.: 1991, ‘Humboldt and the Earth's Magnetic Field’,Quart. J. R. Astr. Soc. 32, 279–293.
Malin, S. R. C. and Işikara, A. M.: 1976, ‘Annual Variation of the Geomagnetic Field’,Geophys. J. R. Astr. Soc. 47, 445–457.
Malin, S. R. C., Hodder, B. M., and Barraclough, D. R.: 1983, ‘Geomagnetic Secular Variation: a Jerk in 1970’, in Cardús, J. O. (ed.),Contribuciones Científicas para Conmemorar et 75 Aniversario del Observatorio del Ebro, Publ. Obs. Ebro, Memoria, No. 14, 239–245.
Matsushita, S. and Campbell, W. H. (eds): 1967,Physics of Geomagnetic Phenomena, Academic Press, New York, 1398 pp. (2 vols.).
Mayaud, P. N.: 1973, ‘A Hundred Year Series of Geomagnetic Data 1868–1967, Indicesaa, Storm Sudden Commencements’,Bull. Int. Assoc. Geomagn. Aeron., No. 33, Paris: IUGG Publications Office 252 pp.
Mayaud, P. N.: 1980,Derivation, Meaning and Use of Geomagnetic Indices, Amer. Geophys. Un., Geophys. Monograph No. 22, American Geophysical Union, Washington D.C., 154 pp.
Mountaine, W. and Dodson, J.: 1758,An Account of the Methods Used to Describe Lines on Dr. Halley's Chart of the Terraqueous Globe Showing the Variation of the Magnetic Needle about the Year 1756, in all the Known Seas; Their Application and use in Correcting the Longitude at Sea; with Some Occasional Observations Relating Thereto, London: T. Page and Son for W. and J. Mount.
Nowozynsky, K., Ernst, T., and Jankowski, J.: 1991, ‘Adaptive Smoothing Method for Computer Derivation of K Indices’,Geophys. J. Int. 104, 85–93.
Parkinson, W. D. and Hutton, V. R. S.: 1989, ‘The Electrical Conductivity of the Earth’, in Jacobs, J. A. (ed.),Geomagnetism, Vol. 3, Academic Press, New York.
Pond, J.: 1820,Astronomical Observations Made at the Royal Observatory at Greenwich,3, (last few pages).
Pond, J.: 1824,Astronomical Observations Made at the Royal Observatory at Greenwich,4, 124.
Riddick, J. C., Greenwood, A. C., and Stuart, W. F.: 1990, ‘The Automatic Remote Geomagnetic Observatory System (ARGOS) Operated in the UK by the British Geological Survey’,Phys. Earth. Planet. Interiors 59, 29–44.
Rishbeth, H.: 1985, ‘The Quadrupole Ionosphere’,Ann. Geophys. 3, 293–298.
Rishbeth, H., Jones, T. B., and Cowley, S. W. H.: 1989, ‘Future of Solar-Terrestrial Monitoring’,EOS Trans. Amer. Geophys. Union 70, 611–612.
Roberts, P. H. and Scott, S.: 1965, ‘On the Analysis of the Secular Variation, 1. A Hydromagnetic Constraint: Theory’,J. Geomagn. Geoelectr. 17, 137–151.
Robinson, P. R.: 1982, ‘Geomagnetic Observatories in the British Isles’,Vistas in Astronomy 26, 347–367.
Shure, L., Whaler, K. A., Gubbins, D. and Hobbs, B. A.: 1983, ‘Physical Constraints for the Analysis of the Geomagnetic Secular Variation’,Phys. Earth Planet. Interiors 32, 114–131.
Stacey, F. D.: 1977,Physics of the Earth, John Wiley and Sons, New York, 413 pp.
Stewart, B.: 1882, Article ‘Terrestrial magnetism’, inEncyclopaedia Britannica, 9th Edition, 36 pp.
Stuart, W. F.: 1984, ‘Introduction to Geomagnetic Observatory and Survey Practice’,Geophys. Surveys 6, 217–221.
Stuart, W. F.: 1990, ‘Magnetic Observatories at the Turn of the Century: a Forward Look’,Phys. Earth Planet. Inferiors 59, 3–12.
Thrower, N. J. W.: 1981,The Three Voyages of Edmond Halley in the “Paramore” 1698–1701, Hakluyt Society (Second Series, Vols. 156, 157), London.
Voorhies, C. V. and Backus, G. E.: 1985, ‘Steady Flows at the Top of the Core from Geomagnetic Field Models: the Steady Motions Theorem’,Geophys Astrophys. Fluid Dynamics 32, 163–173.
Voorhies, C. V. and Benton, E. R.: 1982, ‘Pole Strength of the Earth from MAGSAT and Magnetic Determination of the Core Radius’,Geophys. Res. Lett. 9, 258–261.
Wienert, K.: 1966, ‘125 Jahre erdmagnetische Beobachtungen in München, Maisach und Fürstenfeldbruck’, inZum 125-jährigen Bestehen der Observatorien München-Maisach-Fürstenfeldbruck, München.
Whaler, K. A.: 1980, ‘Does the Whole of the Earth's Core Convect?’,Nature 287, 528–530.
Whaler, K. A.: 1982, ‘Geomagnetic Secular Variation and Fluid Motions at the Core Surface’,Phil. Trans. R. Soc. London A306, 235–246.
Whaler, K. A.: 1984, ‘Fluid Upwelling at the Core-Mantle Boundary—Resolvability from Surface Geomagnetic Data’,Geophys. J. R. Astr. Soc. 78, 453–473.
Whaler, K. A.: 1986, ‘Geomagnetic Evidence for Fluid Upwelling at the Core-Mantle Boundary’,Geophys. J. R. Astr. Soc. 86, 563–588.
Whaler, K. A.: 1990, ‘A Steady Velocity Field at the Top of the Earth's Core in the Frozen-Flux Approximation—Errata and Further Comments’,Geophys. J. Int. 102, 507–509.
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Barraclough, D.R., Clark, T.D.G., Cowley, S.W.H. et al. 150 years of magnetic observatories: Recent researches on world data. Surv Geophys 13, 47–88 (1992). https://doi.org/10.1007/BF01901951
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DOI: https://doi.org/10.1007/BF01901951