| PI of the experiment or contact person | K. Knott |
|---|---|
| Institute of the PI or of the contact person (country) | ESA-ESTEC (ESA) |
| E-mail of the PI or of the contact person | kknott@estec.esa.nl |
| Type of experiment | 2 vitreous carbon spheres mounted on radial booms (42 m tip-to-tip), 2 sets of three-axis search coil magnetometers, one for the ULF/ELF range and one for the VLF range (each is mounted on the locking 3-m booms at a distance of 2 m from the spacecraft), 4 meshed spheres mounted at the end of the 2.5-m axial booms. |
| References about the experiment | Measurements of electric and magnetic wave fields and of cold plasma parameters on-board GEOS-1. Preliminary results (E16.1) |
| Link(s) to Web site(s) | http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=1977-029A&ex=6 |
| Start experiment operation (dd-mm-yyyy) | 28-04-1977 |
| End experiment operation (dd-mm-yyyy) | 23-06-1978 |
| Lifetime of the experiment (month) | 14 |
| Highest data rate | 96 kbps |
| Preliminary results | ULF waves observed with magnetic and electric sensors on GEOS 1 (R16.1) |
| Measured data (k, w, Bo, E(t), B(t), polarisation, Vphase, ...) | DC/AC electric fields (up to 80 kHz), AC magnetic fields (up to 30 kHz), 3 vector components of the electric field |
| Data range | E : DC - 80 kHz B : 0.1 Hz - 30 kHz E : 50 Hz - 80 kHz |
| Sensitivity | E : 1.10-4 V/m (at DC) and 1.10-8 V/m.Hz1/2 (at 10 kHz) B : 2.10-4 nT/Hz1/2 (at 10 Hz) and 3.10-6 nT/Hz1/2 (at 1 kHz) E : 1.10-6 V/m.Hz1/2 (at 10 kHz) |
| Time resolution | ????? |
| Sampling rate | 5.8 samples per second |
| Data formats and supports | 16-mm Microfilm and magnetic tape |
| Location of the data | NSSDC |
| References about the data | http://nssdc.gsfc.nasa.gov/cgi-bin/database/ www-nmc?77-029A&ex=6&ds=* |
| High-resolution data (support, place, contact) | ????? |