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Distributed Arrays of Small Instruments for Solar-Terrestrial Research Report of a Workshop (2006) / Chapter Skim
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Appendix D: Acronyms and Glossary
Pages 56-62

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From page 56...
... D Acronyms and Glossary AE index Auroral electrojet indexdesigned to provide a global, quantitative measure of auroral zone magnetic activity produced by enhanced ionospheric currents flowing below and within the auroral oval. Ideally, it is the total range of deviation, at an instant of time, from quiet day values of the horizontal magnetic field around the auroral oval.
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From page 57...
... electromagnetic wave An electric field spreading in wavelike-fashion through space at a speed of about 300,000 km/s. equatorial anomaly A region of high electron concentration in the tropical ionosphere on either side of the equator at magnetic latitudes of about 10 to 20 degrees.
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From page 58...
... IPS Interplanetary scintillationrapid variation in apparent position, brightness, or color of a distant luminous object viewed through the atmosphere or ionosphere. ISR incoherent scatter radar Kp index A 3-hourly planetary index of geomagnetic activity calculated by the Institut für Geophysik der Universität Göttingen, Germany, from the K indices observed at 13 stations primarily in the Northern Hemisphere.
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From page 59...
... magnetic substorm A descriptive term for the changes over typically 1 to 3 hours in the local magnetic field, at high latitudes, as a result of input from the solar wind and current flows in the magnetotail region of Earth's magnetosphere; can cause geomagnetic induced current at high latitudes. magnetometer An instrument for measuring the magnitude and sometimes also the direction of a magnetic field, such as Earth's magnetic field.
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From page 60...
... plasmapause Outer periphery of the plasmasphere. plasmasphere Inside Earth's magnetosphere, a donut-shaped region that is basically an extension of the ionosphere, or the topmost part of Earth's atmosphere.
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From page 61...
... THEMIS Time History of Events and Macroscale Interactions during Substorms. Themis is also the Goddess of Justice, and her blindfolded impartiality is needed in the discussion of substorm theories.
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Key Terms

  • disparate phenomenological
  • double meaning
  • space vehicle
  • substorm onset
  • onset mechanism

  • impartially distinguish
  • themis mission
  • activity levels
  • including instrument
  • earth atmosphere

  • geomagnetic activity
  • limiting value
  • program name
  • instrument readings
  • increases exponentially

  • radioing information
  • value texo
  • electron content
  • temperature increases
  • exospheric temperature

  • substorm theories
  • temperature texo
  • undershielded temporary
  • blindfolded impartiality
  • electric field

  • time history
  • macroscale interactions
  • temporary penetration


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