Terrestrial Magnetism: Magnetic Dip and Intensity Observations, January, 1897, to June 30, 1902 (Classic Reprint) - Softcover

Hazard, Daniel Lyman

Softcover

ISBN 10: 0243914830 ISBN 13: 9780243914838

Verlag: Forgotten Books, 2017

Inhaltsangabe

Excerpt from Terrestrial Magnetism: Magnetic Dip and Intensity Observations, January, 1897, to June 30, 1902

In Appendix 6 of the Report of the Superintendent for the year 1885 were published the results of all magnetic dip and intensity observations in the United. States and adjacent territory made by the Coast and Geodetic Survey up to that time, together with similar data obtained by other observers collected from all available sources. The publication also contained a discussion of the secular change of dip and horizontal intensity, by means of which the results were reduced to a common epoch, January 1, 188 5. And isoclinic and isodynamic charts were constructed. The intensity results were published in British units.

In the Report of the Superintendent for 1897, Appendix 1, this collection of results was brought up to date by the addition of observations made in the interval and the conversion of intensity results to C. G. S. Units. The results were reduced to January 1, 1900. By means of the secular change data discussed in Appendix 1 for 1895, and isoclinic and isodynamic charts for that epoch were constructed and published.

Since 1896, and especially since the inception by the Coast and Geodetic Survey in 1899 of a detailed magnetic survey of the United States, a great many results have accumulated, and a rediscussion of the secular change of dip and horizontal intensity and the publication of new isoclinic and isodynamic charts will soon be warranted and demanded. It is the purpose of the present appendix to present the results of observa tions of dip and intensity made by the Coast and Geodetic Survey between January 1, 1897, and June 30, 1902, so that they may be available for reference, leaving their discussion for a future paper. The publication of magnetic declination results was brought up to the same date in the Magnetic Declination Tables,* just issued, and it is proposed hereafter to publish each year in the Report of the Superintendent the results of all magnetic observations made by the Coast and Geodetic Survey during the fiscal year covered by the report.

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Details zur Ausgabe

• Verlag: Forgotten Books
• Erscheinungsdatum: 2017
• Sprache: Englisch
• ISBN 10: 0243914830
• ISBN 13: 9780243914838
• Einband: Taschenbuch
• Anzahl der Seiten: 38
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