Dynamics Explorer-2 (DE 2) Vector Electric Field Instrument (VEFI) Data

This directory gathers data for the VEFI instrument that flew on the DE 2 spacecraft 
which was launched on 3 August 1981 into an elliptical orbit with an altitude range of 
300 km to 1000 km and re-entered the atmosphere on 19 February 1983. 

/dca_500ms_ascii   (NSSDC ID: 81-070B-02C)

This data set contains the averaged (2 samples per second) DC electric fields in 
spacecraft coordinates and orbit information in ASCII format. The filenames 
yyyymmddThhmm_HHMM_de2_vefi_dca_500ms_DAT.asc provide the starting time (hhmm) and the 
ending time (HHMM) of measurements in the file. Contact potentials were adjusted for the 
_DAT files and files where the contact potentials were NOT adjusted are labeled as _NONADJ. 
A description of the data format can be found in file description_dca_500ms.txt

/ac_500ms_ascii   (NSSDC ID: 81-070B-02E)

This data set contains the averaged AC electric field data (1 or 2 points per second) 
and orbit information in ASCII format. A description of the data format can be found 
in file description_ac_500ms.txt

Merged VEFI-MAGB data set:

VEFI data are also available online in the form of merged VEFI and MAG-B data sets 
(1/2-second and 1/16-second resolution) in directory magnetic_electric_fields_vefi_mag
and the 1/2-second data also for plotting at 
<http://omniweb.gsfc.nasa.gov/ftpbrowser/ftphelper.html>

Please acknowledge the NASA Space Physics Data Facility and the instrument's
Principal Investigator for data usage.

Keywords: Sun-Earth Connections, space physics, magnetosphere, ionosphere

Data contact: Dieter.Bilitza-1@nasa.gov>
NASA Official: Dr. Robert McGuire <robert.e.mcguire@nasa.gov>