geomagnetic secular variation

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• geomagnetic field — Magnetic field associated with the Earth. It is essentially dipolar (i.e., it has two poles, the northern and southern magnetic poles) on the Earth s surface. Away from the surface, the field becomes distorted. Most geomagnetists explain the… …   Universalium

• Geomagnetic reversal — Magnetic reversal redirects here. For switching of a magnet, see Magnetization reversal. Geomagnetic polarity during the late Cenozoic Era. Dark areas denote periods where the polarity matches today s polarity, light areas denote periods where… …   Wikipedia

• Solar variation — Solar variations are changes in the amount of solar radiation emitted by the Sun. There are periodic components to these variations, the principal one being the 11 year solar cycle (or sunspot cycle), as well as aperiodic fluctuations. Solar… …   Wikipedia

• Earth's magnetic field — Computer simulation of the Earth s field in a normal period between reversals.[1] The tubes represent magnetic field lines, blue when the field points towards the center and yellow when away. The rotation axis of the Earth is centered and… …   Wikipedia

• Outline of geophysics — Seismic velocities and boundaries in the interior of the Earth sampled by seismic waves. The following outline is provided as an overview of and topical guide to geophysics: Geophysics – the physics of the Earth and its environment in space; also …   Wikipedia

• Vincent Courtillot — Naissance 6 mars 1948 (1948 03 06) (63 ans) Neuilly sur Seine (France) Champs Géophysique Institution Institut de physique du globe de Paris Diplômé de École des mines …   Wikipédia en Français

• South Magnetic Pole — Locations of South Magnetic Pole from direct observation and model prediction.[1] For additional general information about the Earth s magnetic poles, see North Magnetic Pole. The Earth s South Magnetic Pole is the wandering point on the Eart …   Wikipedia

• Liviu Constantinescu — (26 November 1914 – 29 November 1997) was a Romanian geophysicist, professor of geophysics, member of the Romanian Academy. He was the cofounder, together with Sabba S. Ştefănescu, of the Romanian school of geophysics.BiographyBorn into an old… …   Wikipedia

• Earth — This article is about the planet. For other uses, see Earth (disambiguation). Earth   …   Wikipedia

• Magnetic Surveying in Archaeology (book) — Magnetic Surveying in Archaeology (Wormianum, 2008, ISBN 978 87 89531 29 8) is a book written by Russian archaeologist T. N. Smekalova together with O. Voss and S. L. Smekalov. In the book researches collected information about magnetic… …   Wikipedia

• Columbia River Basalt Group — The Columbia River Basalt Group (including the Steen and Picture Gorge basalts) extends over portions of five states. The Columbia River Basalt Group is a large igneous province that lies across parts of the Western United States . It is found in …   Wikipedia