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The reduction, verification and interpretation of magsat magnetic data over canada
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Dawson, E. Haines, G. V. Vanbeek, G. J. Walker, J. K. Newitt, L. R. |
| Copyright Year | 1981 |
| Description | Analysis of Investigator B tapes was extended to use a statistical screening of individual data points in each grid cell over the map area. The mean value of data from each cell was computed and all data values more than 4nT from the mean were rejected. The revised mean and standard deviation was computed. The average standard deviation for all map grid cells was 1.4nT for the scalar anomaly map and about 2nT for the vector component anomaly maps. At this stage, the grid cell is larger and spatial resolution lower for the vector maps than for the scalar maps, because the vector components are considerably more disturbed and more data points were rejected. An approach for altitude adjustment is in progress so that corrections can be made and data reduction procede. To evaluate the use of scalar and vector MAGSAT data for the production of regional magnetic charts, charts of the north, east, vertical, and scalar field derived from MAGSAT and from Canadian aeromagnetic data were compared. It appears possible to retrieve crustal signals from the horizontal vector components despite external disturbance fields at high latitude. |
| File Size | 3536247 |
| Page Count | 11 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19820017715 |
| Archival Resource Key | ark:/13960/t8ff8kz5j |
| Language | English |
| Publisher Date | 1981-12-01 |
| Access Restriction | Open |
| Subject Keyword | Earth Resources And Remote Sensing Geomagnetism Statistical Analysis Earth Resources Program Satellite Observation Data Reduction Magsat 1 Satellite Canada Aerial Reconnaissance Earth Crust Scalars Magnetic Anomalies Signature Analysis Spatial Resolution 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 |
