Abstract:
The Magsat project was a joint NASA/USGS effort to measure near-earth magnetic fields on a global basis. Objectives included obtaining an accurate description of the earth's magnetic field, obtaining data for use in the update and refinement of world and regional magnetic charts, compilation of a global crustal magnetic anomaly map, and interpretation of that map in terms of geologic/geophysical ... models of the earth's crust. The spacecraft was launched into a low, near-polar, orbit by the Scout vehicle.
There are two magnetometers onboard the spacecraft: a scalar magnetometer and a tri-axial fluxgate magnetometer. Both magnetometers have a resolution of less than 1.0 nT.
Data sets archived at NSSDC include digital data in both s/c coordinates and North, East, Vertical Coordinate system. Orbit data are included. Plots for some data and anomaly maps are also available. Some software is also archived, including routines from the Magsat project and a package of routines from Purdue Univ., which were used to study magnetic anomalies.
The following is a detailed list of data sets, please refer to the NSSDC Master Catalog (accessible also from NODIS menu) for more detailed information about each data set.
79-094A-00D Orbit Position Listing, Fiche 1979-11-02 1980-06-08
Scalar Magnetometer 79-094A-01A Chronint(Chronicle Intermed),Tape 1979-11-02 1980-06-10 79-094A-01B Chronsc(Chronicle Spacecraft)Tape 1979-11-02 1980-06-09 79-094A-01C MAGSAT Orbit Ret Subrout, Tape 79-094A-01D Purdue Mag Field Routines, Tape 79-094A-01E User Programs, Tape 79-094A-01F Chronfin (Chronicle Fine), Tape 1979-11-01 1980-05-19 79-094A-01G Inv-B (Investigator-B) Data, Tape 1979-11-02 1980-06-10 79-094A-01H Condensed Orbit/Attitude, Tape 1979-11-02 1980-05-01 79-094A-01I Select Data for Model W/Adj, Tape 1979-11-05 1980-04-20 79-094A-01J Select Data for Field Model, Tape 1979-11-05 1980-04-20 79-094A-01K Investig-B Quiet Time Data, Tape 1979-11-02 1980-05-20 79-094A-01L Latitude Plots-Int Att, Mfilm 1979-11-02 1980-06-09 79-094A-01M Low-Latitude Scalar Anomaly, Tape 1979-11-02 1980-05-16 79-094A-01N Low-Lat Scalar Anomaly Data,Mfilm 79-094A-01O Anomaly Maps, 8x10-in Negatives 79-094A-01P Equiv Source Dipol Sol, Scal,Tape
Vector Magnetometer 79-094A-02A Chronint(Chronicle Intermed),Tape 1979-11-02 1980-06-10 79-094A-02B Chronsc(Chronicle Spacecraft)Tape 1979-11-02 1980-06-09 79-094A-02C MAGSAT Orbit Ret Subrout, Tape 79-094A-02D Purdue Mag Field Routines, Tape 79-094A-02E Latitude Plots-Int Att, Mfilm 1979-11-02 1980-06-09 79-094A-02F Polar Plots South on Microfilm 79-094A-02G Polar Plots North on Microfilm 79-094A-02H User Programs, Tape 79-094A-02I Chronfin (Chronicle Fine), Tape 1979-11-01 1980-05-19 79-094A-02J Inv-B (Investigator-B) Data, Tape 1979-11-02 1980-06-10 79-094A-02K Condensed Orbit/Attitude, Tape 1979-11-02 1980-05-01 79-094A-02L Latitude Plots-Fine Att, Mfilm 1979-11-02 1980-05-19 79-094A-02M Select Data for Model W/Adj, Tape 1979-11-05 1980-04-20 79-094A-02N Select Data for Field Model, Tape 1979-11-05 1980-04-20 79-094A-02O Investig-B Quiet Time Data, Tape 1979-11-02 1980-05-20 79-094A-02P Whole-Orb Plt Delt F,X,Y,Z, Mfilm 1979-11-02 1980-04-15 79-094A-02Q Whole-Orb Plt Delt F,X,Y,Z, Fiche 1979-11-02 1980-03-06 79-094A-02R Anomaly Maps, 8x10-in Color Neg 79-094A-02S 65S-65N Vector Anomaly Plts,Mfilm 79-094A-02T 65S-65N Vector Anomaly Comps, Tp 79-094A-02U Equiv Source Dipol Sol, Vector Tp
Description:
0.5-sec. resolution magnetic field vectors from NASA's MAGSAT spacecraft (300-600 km altitude, 90 deg inclination) taken between November 2, 1979 and May 6,1980.
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