| 释义 |
geomagnetism|dʒiːəʊˈmægnɪtɪz(ə)m|
[f. geo- + magnetism.]
The study of the magnetic properties of the earth and related phenomena; terrestrial magnetism.
1938S. Chapman in Terrestr. Magn. XLIII. 321 Workers on the science of the Earth's magnetism..should regularly adopt the title geomagnetism, and the corresponding adjective geomagnetic, in place of the more usual terrestrial magnetism and terrestrial magnetic. 1940Chapman & Bartels (title) Geomagnetism. 1956Encycl. Brit. Ann. 354/2 Geomagnetism has broad and basic implications in the study of the ionosphere, radio-wave propagation, [etc.]. 1968W. M. Kaula Introd. Planetary Physics iii. 137 The fields..are..represented as vector spherical harmonics, with spheroidal (in geomagnetism called ‘poloidal’) and toroidal parts.
So geomagˈnetic a., of or pertaining to geomagnetism; geomagˈnetically adv.; geomagneˈtician, geoˈmagnetist, an expert in, or student of, geomagnetism.
1903Sci. Amer. Suppl. 19 Sept. 23177/1 The geomagnetist Paulins..essayed to supply the..organs of the plants with this life and vigor-giving excitement. 1904Nature 21 Apr. 581/1 Everyone who has ever been engaged in geomagnetic investigations. 1938Geogr. Jrnl. XCII. 386 The position of the Earth's magnetic axis when the distorting effects caused by local conditions of the Earth's crust are eliminated..is known as the Geomagnetic Pole. 1955Sci. Amer. Sept. 152/1 As a famous geomagnetician of the early 19th century, Christopher Hansteen, truly said: ‘The earth speaks of its internal movements through the silent voice of the magnetic needle.’ 1956Nature 7 Jan. 29 (heading) Observations of whistling atmospherics at geomagnetically conjugate points. 1970Ibid. 23 May 740/1 The contribution of ionospheric currents should predominate at both stations on days which are not geomagnetically disturbed. |