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Numerical solution of the geoelectrodynamic problem
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Cain, Joseph C. |
| Copyright Year | 1990 |
| Description | The primary goal is to understand the sources of the near-Earth ambient magnetic field as observed by recent spacecraft surveys and surface variational magnetic observations so as to determine the electrical properties of the crust and upper mantle. Also included is the structure and changes on a short time scale of the core field which must be separated and identified. The Magsat data collection interval provides an opportunity to compare the vector field projections of ionospheric currents computed from surface data above the ionosphere as does the POGO data for scalar projections. The limitation of Magsat is its sun-synchronous orbit, which only sampled low latitudes at dawn and dusk, whereas POGO, though only making observations of the scalar field, sampled all local times. Magsat operated at a lower altitude than POGO (down to 350 km) whereas the orbits of the three POGO spacecraft ranged up to 1500 km and were never lower than about 400 km. |
| File Size | 793802 |
| Page Count | 22 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910004505 |
| Archival Resource Key | ark:/13960/t7cs0qp8k |
| Language | English |
| Publisher Date | 1990-09-06 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Pogo Geomagnetism Astronomical Observatories Earth Crust Magnetic Cores Data Acquisition Earth Mantle Geoelectricity Ionospheric Currents Scalars Magsat Satellites Magnetic Measurement Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
