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PRACTICAL CONSEQUENCES OF SPACE WEATHER
Pages 59-73

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From page 59... ... Single penetrating cosmic rays can change the state in electronics components such as spacecraft memory chips. Newspaper headlines announce the failure of systems aboard the Canadian ANIK E-1 and E-2 communications satellites due to elevated intensity of activity of high-energy electrons in Earth's outer magnetosphere (courtesy of the Solar Data Analysis Center, Goddard Space Flight Center) Read the entire page →
From page 60... ... Electrical transients often occur in the local time period between midnight and dawn following what appears to be an injection of electrons toward Earth from the magnetotail during geomagnetic disturbances. Locations of spacecraft at times when they experienced anomalous discharges, presumably due to enhancements in the radiation environment accompanying magnetic storms and substorms (courtesy of the NOAA National Geophysical Data Center, Boulder, CO) Read the entire page →
From page 61... ... Increased atmospheric densities in low-Earth orbit from solar-cycle enhanced solar ultraviolet emissions and geomagnetic disturbances hasten the decay for this and other satellites (courtesy of Students for the Exploration and Development of Space) Read the entire page →
From page 62... ... If it becomes especially strong due to an increase in the local electron density, it can cause a total communications blackout. Solar flare ultraviolet and x ray bursts, solar energetic particles, or intense aurora can all bring on this condition. Read the entire page →
From page 63... ... However, space weather-related perturbations can create signals in survey data that can be mistaken for signatures of subsurface resources. Survey schedules or operations must be modified, often suddenly and with significant cost impact, to avoid this contamination of the survey data. Read the entire page →
From page 64... ... Although the residual atmosphere above an aircraft provides a measure of protection from cosmic rays and solar energetic particles that enter the magnetosphere, there is still concern for flights on polar routes during major solar particle events. The primary means of reducing this hazard is to modify flight paths as necessary and to limit the flight time of personnel on high-altitude aircraft like the supersonic transport. Read the entire page →
From page 65... ... It is known, for example, that the intensity of galactic cosmic rays that reach the atmosphere is about ten times higher inside the auroral zone than near the equator and that solar particles have increased access to this same region. The likelihood of a frequently disturbed magnetosphere and presence of solar energetic particles is considerable given the phasing of the ISS construction with the next solar maximum. Read the entire page →
From page 66... ... Space Weather: A Research Perspective An astronaut on the lunar surface would be in danger of a lethal dose of radiation from solar energetic particles were a major coronal mass ejection to occur unnoticed (Figure courtesy of NASA Apollo 11 image archives) Read the entire page →
From page 67... ... file:///S\|/SSB/goes.gif file:///S\|/SSB/goes.gif [6/25/2003 4:38:53 PM] Read the entire page →
From page 68... ... file:///S\|/SSB/ps_seu_s.gif file:///S\|/SSB/ps_seu_s.gif [6/25/2003 4:38:56 PM] Read the entire page →
From page 69... ... file:///S\|/SSB/spweasto.jpg file:///S\|/SSB/spweasto.jpg [6/25/2003 4:39:00 PM] Read the entire page →
From page 70... ... file:///S\|/SSB/gic91nov.gif file:///S\|/SSB/gic91nov.gif [6/25/2003 4:39:07 PM] Read the entire page →
From page 71... ... file:///S\|/SSB/ps_pca_e.gif file:///S\|/SSB/ps_pca_e.gif [6/25/2003 4:39:09 PM] Read the entire page →
From page 72... ... file:///S\|/SSB/ssiorb.gif file:///S\|/SSB/ssiorb.gif [6/25/2003 4:39:18 PM] Read the entire page →
From page 73... ... file:///S\|/SSB/ssicon.gif file:///S\|/SSB/ssicon.gif [6/25/2003 4:39:21 PM] Read the entire page →

From page 59...

... Single penetrating cosmic rays can change the state in electronics components such as spacecraft memory chips. Newspaper headlines announce the failure of systems aboard the Canadian ANIK E-1 and E-2 communications satellites due to elevated intensity of activity of high-energy electrons in Earth's outer magnetosphere (courtesy of the Solar Data Analysis Center, Goddard Space Flight Center)

PRACTICAL CONSEQUENCES OF SPACE WEATHER Pages 59-73

PRACTICAL CONSEQUENCES OF SPACE WEATHER
Pages 59-73