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MAGNETOSPHERE

MAGNETOSPHERE. What caused the earth’s magnetic field? What does the magnetosphere do? What is a solar storm? What is an aurora?. Earth’s Core is HOT…REALLY HOT 1. Outer Core is molten Iron 2. Earth rotates on its axis. What causes the Earth’s magnetic field?.

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MAGNETOSPHERE

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  1. MAGNETOSPHERE What caused the earth’s magnetic field? What does the magnetosphere do? What is a solar storm? What is an aurora?

  2. Earth’s Core is HOT…REALLY HOT1. Outer Core is molten Iron2. Earth rotates on its axis What causes the Earth’s magnetic field?

  3. MAGNETOSPHEREa computer model

  4. MAGNETOSPHERE

  5. What is a Space Weather? • The Sun creates sunspots, solar flares, coronal mass ejections, coronal holes, and the solar wind. • Over a solar cycle of about 11 years, radiation and particles such as electrons and protons stream toward Earth with varying intensity and interact with the Earth's magnetic field and atmosphere.

  6. What comes from the sun? • Electromagnetic Radiation – some good, some bad • Light and Heat • Sunburn and skin cancer • Ionized Particles – called Plasma • Matter has mass and takes up space • Charged particles react with matter in the atmosphere

  7. What is an Aurora? Northern and Southern Lights • form when solar particles and magnetic fields pump energy into the Earth's magnetic field

  8. What causes an Aurora? • The high-speed particles crash into Earth's upper atmosphere (ionosphere) over the polar regions, causing the atmosphere to emit a ghostly, multicolored glow.

  9. THEMISTime History of Events and Macroscale Interactions during SubstormsTHEMIS will identify the mechanisms that trigger substorms which cause the Auroras.(UCB Space Science Laboratory, NASA, Swales Aerospace) Launch date February 15, 2007 Two year mission 5 space probes 25 scientific instruments 20 ground observations

  10. THEMIS MISSIONWhat sequence of events triggers these auroral eruptions? • Five identical probes carry electric, magnetic and particle detectors • Probes align every 4 days along the Sun – Earth line to measure magnetic field, electrical flows, plasma waves and energized particles

  11. 20 Ground Stationslocated at 11 rural schoolsmonitor electric currents in the Earth’s magnetosphere

  12. CARSON CITY – WNCC The blue dots show the location of 10 magnetometers located in rural schools. The red dots show the location of ground-based observatories which have all-sky cameras and magnetometers.

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