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Interplanetary Monitoring Platform (IMP-8) Goddard Medium Energy (GME) Experiment Data Entry ID: IMP8_GSFC |
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Summary
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Abstract:
IMP-8 (IMP-J) was launched by NASA on October 26, 1973 to measure the magnetic fields, plasmas, and energetic charged particles (e.g., cosmic rays) of the Earth's magnetotail and magnetosheath and of the near-Earth solar wind. IMP-8 continues to operate. Energetic particle data from the IMP-8 Goddard Medium Energy (GME) Experiment provide a comprehensive basis for modulation and acceleration studies at 1 AU and a critical and unique baseline at 1 AU for ongoing studies of cosmic ray modulation and propagation in the outer heliosphere for Pioneer and Voyager investigations. These include work at New Mexico State University, the University of New Hampshire, the University of Maryland, the University of Iowa, Nagoya University, the University of Tasmania and NASA/Goddard Space Flight Center. The GME instrument has provided continuous observations extending over almost a complete heliospheric cycle from launch in October 1973 and continues to operate with few problems. When combined with the data from essentially identical Goddard experiments on IMP 6 and 7, these cosmic ray and energetic interplanetary particle observations span a period of 26 years. Data from the GME instrument span an energy range of 0.5-450 MeV Hydrogen, 2-450 MeV/nuc Helium, ions from Carbon through the Iron group from several to >100 MeV/nuc and relativistic electrons. The quality of the IMP 8 GME data in terms of particle and energy resolution, and sensitivity, for galactic cosmic ray Hydrogen (2-230 MeV) and Helium (2-450 MeV/nuc) remains comparable to that of any other cosmic ray experiment flown since 1971. Some data are available through NSSDC CDAWeb and at the GMER site at the SPDF. Data at SPDF include: - Selected instrument rates at 1 hour resolution on (pre-generated ONLY) 10-day GIF plots - Selected instrument rates at 1 hour resolution. In 90-day files with 1 file for each rate (typical length 0.1 MByte) - H and He Fluxes, plus Electrons and Rates at 30 minute resolution - H, He and Ion Fluxes, plus Electrons and Rates at 6-hour resolution - Full telemetry resolution data Data at NSSDC CDAWeb consists of: - Hourly Averaged High Energy Protons (20- 40 MeV) Data - PHAS Data: Pulse Height Data from the LED & MED - MATR Data: Pulse Height Analysis Summary - Hourly-Averaged High Energy Protons 40-80 MeV Data - CNTS Data: Count Rates from the VLET, LED, & MED Detectors See also: http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=1973-078A&ex=9 and http://spdf.gsfc.nasa.gov/imp8_GME/GME_home.html |
Related URL
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Link:
GET DATA
Description: IMP-8 GME data products at SPDF Link: GET DATA Description: IMP-8 GME data via CDAWeb Link: VIEW PROJECT HOME PAGE Description: IMP-8 GME data and information Link: VIEW RELATED INFORMATION Description: Additional information from NSSDC on IMP-8 GME data |
Data Set Citation
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Dataset Originator/Creator:
IMP-8 GME (GSFC) Team
Dataset Title: IMP-8 CME Dataset Release Date: 1973 Dataset Release Place: Greenbelt, MD Dataset Publisher: NASA/GSFC Online Resource: http://spdf.gsfc.nasa.gov/imp8_GME/GME_home.html |
Temporal Coverage
| Start Date: 1973-10-30 |
Location Keywords
Data Resolution
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Temporal Resolution:
daily, 6-hour, 30-min
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Science Keywords
| SUN-EARTH INTERACTIONS >SOLAR ENERGETIC PARTICLE FLUX >ALPHA PARTICLE FLUX [Definition] |
| SUN-EARTH INTERACTIONS >SOLAR ENERGETIC PARTICLE FLUX >ELECTRON FLUX [Definition] |
| SUN-EARTH INTERACTIONS >SOLAR ENERGETIC PARTICLE FLUX >ION FLUX [Definition] |
| SUN-EARTH INTERACTIONS >SOLAR ENERGETIC PARTICLE PROPERTIES >PARTICLE COMPOSITION [Definition] |
| SUN-EARTH INTERACTIONS >SOLAR ENERGETIC PARTICLE PROPERTIES >PARTICLE DENSITY [Definition] |
| SUN-EARTH INTERACTIONS >SOLAR ENERGETIC PARTICLE PROPERTIES >PARTICLE SPEED [Definition] |
| SUN-EARTH INTERACTIONS >SOLAR ENERGETIC PARTICLE FLUX >PROTON FLUX [Definition] |
ISO Topic Category
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GEOSCIENTIFIC INFORMATION
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Platform
| IMP-8 >Interplanetary Monitoring Platform-8 [Information] |
Instrument
| GME >Goddard Medium Energy Experiment (IMP-8) [Information] |
Project
| ISTP >International Solar Terrestrial Physics Program [Information] |
Keywords
| magnetotail |
| magnetosheath |
| magnetopause |
| bow shock |
| solar cosmic rays |
| solar protons |
| solar electrons |
| solar ions |
| IMP-J |
| Explorer 50 |
Data Set Progress
| IN WORK |
Originating Center
| NSSDC |
Data Center
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National Space Science Data Center, Space Science Data Operation Office, Goddard Space Flight Center, NASA
[Information]
Data Center URL: http://nssdc.gsfc.nasa.gov/
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Space Physics Data Facility, Heliospheric Physics Lab, Heliospheric Science Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA
[Information]
Data Center URL: http://spdf.gsfc.nasa.gov/
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Distribution
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Distribution_Media:
online ftp, www
Fees: none |
Personnel
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ROBERT
MCGUIRE Role: INVESTIGATOR Phone: 301-286-7794 Email: robert.e.mcguire at nasa.gov Contact Address: NASA Goddard Space Flight Center Mailstop 672.0 City: Greenbelt Province or State: MD Postal Code: 20771 Country: USA |
Creation and Review Dates
DIF Creation Date:
2005-01-28
Last DIF Revision Date:
2005-07-29
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