Interplanetary Monitoring Platform (IMP-8) Magnetometer Experiment Data
Entry ID: IMP8_MAG

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Summary
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.

The magnetic field experiment on the IMP-8 spacecraft utilizes a
tri-axial fluxgate (saturable inductor) magnetometer. The instrument
originally had three, automatically determined, ranges, +/- 12 nT,
+/-36 nT, and +/- 108 nT, full scale. Because of a range-change
circuit failure occurring in early July 1975, the experiment was
commanded into a fixed +/-36 nT range on July 11, 1975 at 12:55:09 UT
and has been in that range ever since. The measurements are A-to-D
converted onboard, to an 8-bit resolution, yielding +/-0.14 nT
quantization sensitivity, which is larger than the intrinsic sensor
noise level of 0.025 nT RMS.

Data consists of 15.36 sec magnetic field data, hourly magnetic field
averages, and daily 1 minute magnetic field data. The parameters given
are: spacecraft position in GSE and GSM coordinates; magnetic field
vector, in GSE and GSM; the average magnetic field magnitude, and the
variances of the magnetic field components.
Other data include:
- 1-Hour averaged magnetic field data for solar wind only
- 1-Hour averaged magnetic field data for all orbit phases
- 15.36 Sec Averaged Vector Magnetic Field Data Plots on Microfilm
- 24-Hr Magnetic Field Summary Plots on Microfiche
- 0.32 s GSE Magnetic Field Data
- Hourly Averaged IMP Magnetic Field Data
- 20-s CPME + EPE Particle, 15-s Magnetic Field and 1-min Plasma
Merged Data Set
- 5 Minute Field and Plasma Data from UCLA
- 15 Sec Magnetic Field Plots on Microfilm For IMS Special Periods
- 5-Min Averaged Interplanetary Field and Plasma, Select Parameters
From 73-078A-0
- 5-Minute Averaged Interplanetary Magnetic Field and Plasma Data
- 1-Minute Averaged Magnetic Vectors Data
- 15-s Averaged Magnetic Vectors, CDF I8_H0_MAG, Version 2
- 15-s Averaged Magnetic Vectors, ASCII, Version 2
- 15 Second Averaged Magnetic Field Data, IEEE Binary, Version 2

Data are available from the NSSDC anonymous ftp site, OMNIWeb and
CDAweb as well as from the PI web site:
http://wind.nasa.gov/imp8/
See also:
http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=1973-078A&ex=1&ds=*

Related URL
Link: GET DATA
Description: IMP-8 magnetometer data at NSSDC anonymous ftp


Link: GET DATA
Description: 15 sec IMP-8 magnetometer data from NSSDC's FTPWeb Browser


Link: GET DATA
Description: IMP-8 magnetometer data from the OMNI Near-Earth Heliosphere Data server


Link: GET DATA
Description: IMP-8 magnetometer data from the Coordinated Data Analysis Web (CDAWeb)


Link: GET DATA
Description: Magenetometer and solar wind IMP-8 data from UCLA


Link: VIEW PROJECT HOME PAGE
Description: IMP-8 Magnetometer Experiment web site


Data Set Citation
Dataset Originator/Creator: IMP-8 Magnetometer Team
Dataset Title: IMP-8 Magnetometer Experiment Data
Dataset Release Date: 1973
Dataset Release Place: Greenbelt, MD
Dataset Publisher: NASA/GSFC/NSSDC
Online Resource: http://wind.nasa.gov/imp8/


Temporal Coverage
Start Date: 1973-10-30


Location Keywords
SPACE > EARTH MAGNETIC FIELD > HIGH LATITUDE MAGNETOSPHERE
SPACE > EARTH MAGNETIC FIELD > INNER MAGNETOSPHERE
SPACE > EARTH MAGNETIC FIELD > MAGNETOSPHERE (OTHER)
SPACE > SOLAR REGION > PHOTOSPHERE


Data Resolution
Temporal Resolution: 15 sec, 1 min, 1 hour


Science Keywords
SUN-EARTH INTERACTIONS >IONOSPHERE/MAGNETOSPHERE DYNAMICS >MAGNETIC FIELDS/MAGNETIC CURRENTS    [Definition]
SUN-EARTH INTERACTIONS >IONOSPHERE/MAGNETOSPHERE DYNAMICS >PLASMA WAVES    [Definition]
SUN-EARTH INTERACTIONS >IONOSPHERE/MAGNETOSPHERE DYNAMICS >SOLAR WIND    [Definition]


ISO Topic Category
GEOSCIENTIFIC INFORMATION


Platform
IMP-8 >Interplanetary Monitoring Platform-8    [Information]


Instrument
FLUXGATE MAGNETOMETERS    [Information]
IME >IMP-8 Magnetometer Experiment    [Information]


Project
ISTP >International Solar Terrestrial Physics Program    [Information]


Keywords
magnetic field
magnetometer
magnetotail
magnetosheath
ISTP
solar wind
IMP-J
Explorer 50


Data Set Progress
IN WORK


Originating Center
NSSDC


Data Center
National Space Science Data Center, Space Science Data Operation Office, Goddard Space Flight Center, NASA    [Information]
Data Center URL: http://nssdc.gsfc.nasa.gov/

Data Center Personnel
Name: NSSDC USER SUPPORT OFFICE
Email: nssdc-request at lists.nasa.gov
Contact Address:
National Space Science Data Center
NSSDC/Code 633.4
NASA/Goddard Space Flight Center
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA



Distribution
Distribution_Media: online ftp, www
Fees: none


Personnel
RONALD P. LEPPING
Role: INVESTIGATOR
Email: ronald.p.lepping at nasa.gov
Contact Address:
NASA
Goddard Space Flight Center
Code 674
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA


ADAM SZABO
Role: INVESTIGATOR
Phone: (301) 286-5726
Fax: (301) 286-1648
Email: Adam.Szabo at nasa.gov
Contact Address:
NASA/GSFC, Code 696
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA


Publications/References
IMP-8 Magnetometer Team (1973), For a selected list of IMP-8 Magnetometer Team publications., http://wind.nasa.gov/imp8/

Creation and Review Dates
DIF Creation Date: 2005-01-19
Last DIF Revision Date: 2011-03-01

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