lecture5 - ECE2984 Lecture5:...

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ECE 2984 Lecture 5: SPACE ENVIRONMENT: THE MAGNETOSPHERE Joseph Baker (ECE Dept) Lecture 5: The Magnetosphere ECE 2984:Exploration of Space
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Last Lecture The Solar Corona Coronal Mass Ejections (CMEs) and Interplanetary Shocks The Solar Wind arly redictions olar “ ind” rsus lar “ reeze”) Early Predictions (Solar Wind versus Solar Breeze ) Early Observations (Implied and in situ) “Fast” solar wind versus “slow” solar wind Plasma Beta The Interplanetary Magnetic Field (IMF) he arker iral d allerina irt The Parker Spiral and Ballerina Skirt Co rotating Interaction Regions The Heliosphere Joseph Baker (ECE Dept) Lecture 5: The Magnetosphere ECE 2984:Exploration of Space Solar Wind Spacecraft
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This (and Next) Lecture Charged Particle Motion in a Magnetic Field The Geomagnetic Field The Magnetosphere t h i f i t i Magnetospheric Configurration Magnetospheric Current Systems he owshock nd agnetosheath The Bowshock and Magnetosheath The Magnetopause and Boundary Layers The Magnetotail: Lobes and Plasma Sheet The Plasmasphere (trapped “cold” plasma) The Radiation Belts (trapped “hot” plasma) Joseph Baker (ECE Dept) Lecture 5: The Magnetosphere ECE 2984:Exploration of Space
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The Geomagnetic Field Joseph Baker (ECE Dept) Lecture 5: The Magnetosphere ECE 2984:Exploration of Space
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History of Geomagnetism ~1000 AD: The Chinese start using lodestone for navigation 17187: Alexander Neckham describes the principles of a magnetic compass 1269: Petrus Peregerinus describes the properties of magnets 1581: Robert Norman introduces the conceptof “geomagnetic dip angle” 1600: William Gilbert hypothesizes that the Earth is a giant magnet 1741: George Graham and Anders Celsius observe that auroral activity is sociated ith erturbations e omagnetic eld associated with perturbations in the geomagnetic field 1777: Augustin Coulomb shows magnetic forces obey an inverse square law 1820: Hans Christian Oersted and Andre Marie Ampere separately discover that agnetism roduced y lectric rrents magnetism is produced by electric currents 1831: Michael Faraday discovers that electric fields can be produced by changing magnetic fields Joseph Baker (ECE Dept) Lecture 5: The Magnetosphere ECE 2984:Exploration of Space
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History of Geomagnetism 1836: Carl Friedrich Gauss maps the geomagnetic field using spherical harmonics 852 dward bine bserves eomagnetic isturbances e lated nspots 1852: Edward Sabine observes geomagnetic disturbances are related to sunspots 1859: Richard Carrington observes a solar flare preceding a large magnetic storm 1861: James Clerk Maxwell consolidates electromagnetic theory into four concise q ations d o s at ht n e nsidered n lectromagnetic ae equations and shows that light can be considered an electromagnetic wave.
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lecture5 - ECE2984 Lecture5:...

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