Geomagnetic secular variation at Addis Ababa over the last four decades: comparison with 1945—2000 igrf models
نویسندگان
چکیده
منابع مشابه
Four centuries of geomagnetic secular variation from historical records
We present a new model of the magnetic eld at the core{mantle boundary for the interval 1590{1990. The model, called gufm1, is based on a massive new compilation of historical observations of the magnetic eld. The greater part of the new dataset originates from unpublished observations taken by mariners engaged in merchant and naval shipping. Considerable attention is given to both correcti...
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1 Earth and Planetary Magnetism Group, Institut für Geophysik, Sonneggstrasse 5, ETH Zürich, CH-8092, Switzerland. 2NOAA/NGDC and CIRES, University of Colorado, U.S.A. 3British Geological Survey, Murchison House, West Mains Road, Edinburgh, EH9 3LA, U.K. 4Helmholtz Centre Potsdam, GFZ German Research centre for Geosciences, Telegrafenberg, 14473, Germany. 5School of Chemistry, University of New...
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ژورنال
عنوان ژورنال: SINET: Ethiopian Journal of Science
سال: 2002
ISSN: 0379-2897
DOI: 10.4314/sinet.v25i1.18075