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SPACE WEATHER

SPACE WEATHER. 1. Causes of space weather. Space weather is caused mainly by storms and eruptions in our volatile Sun sending potentially dangerous radiation towards Earth. 2. 3. Effects of Space weather.

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SPACE WEATHER

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  1. SPACE WEATHER 1

  2. Causes of space weather Space weather is caused mainly by storms and eruptions in our volatile Sun sending potentially dangerous radiation towards Earth. 2

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  4. Effects of Space weather • It also causes the spectacular “aurora” light displays that have awed so many in the polar regions — a beautiful show of radiation hitting Earth’s magnetic field 4

  5. CME OR SOLAR FLARES • The Sun randomly and suddenly ejects bursts of its component plasma or magnetic matter in events called coronal mass ejections (CME), and is subject to equally arbitrary bursts of radiation called solar flares. 5

  6. RADIATIONS RADIATIONS BRING ALONG WITH THEM PARTICLES LIKE NEUTRINOS THAT RIDE ON SOLAR WIND AND CAN BE HARMFUL 6

  7. HARMFULL AFFECTS • Sudden flares or outbursts can cause geomagnetic storms that affect Manmade systems in space and on Earth, though the magnetosphere protects us humans from the worst effects on the ground. • CME, for example, can trigger magnetic current surges on long terrestrial lines like electric power lines. • The magnetic disturbances can also throw out radar, radio signals and satellites 7

  8. SOLAR FLARE EFFECTS • Solar flares boost the level of radiation that reaches Earth and its atmosphere, which expands and becomes more dense for satellites to move through, causing drag that reduces their lifetime. • Satellites can also fall victim to sudden magnetic charge changes damaging their electronics. 8

  9. Astronauts, too may be in danger, hence extra-protective shields against radiation bursts that are provided in parts of the orbiting International Space Station. Extra shield for astronauts 9

  10. Effect on Humans • There is a small risk for humans, as they are protected by the magnetosphere. But: • Some research says aircrew flying frequently at high altitude on long-haul flights may receive a radiation dose equivalent to several chest x-rays from exposure to solar flare radiation.. 10

  11. VIEW • http://www.youtube.com/watch?v=ju1GD9xqw3g&feature=share&list=PL2FD9DF93D1CFD00E 11

  12. Monitoring the weather • Space weather is monitored by looking at the Sun with satellites and telescopes and measuring changes in the Earth’s magnetic field and radio noise. • Even the aurora are monitored — changes in their shape can indicate solar storm events. • (Data obtained from the European Space Agency) 12

  13. Bibliography http://www.youtube.com/watch?v=ju1GD9xqw3g&feature=share&list=PL2FD9DF93D1CFD00E • Nasa @ space center • http://www.windows2universe.org/space_weather/sw_in_depth/images/space_weather_effects_society_big_gif_image.html Data obtained from the European Space Agency 13

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