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Estimating the crustal power spectrum from vector magsat data: crustal power spectrum
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Lowe, David A. J. Parker, Robert L. Constable, Catherine G. Purucker, Michael E. |
| Copyright Year | 2000 |
| Description | The Earth's magnetic field can be subdivided into core and crustal components and we seek to characterize the crustal part through its spatial power spectrum (R(sub l)). We process vector Magsat data to isolate the crustal field and then invert power spectral densities of flight-local components along-track for R(sub l) following O'Brien et al. [1999]. Our model (LPPC) is accurate up to approximately degree 45 (lambda=900 km) - this is the resolution limit of our data and suggests that global crustal anomaly maps constructed from vector Magsat data should not contain features with wavelengths less than 900 km. We find continental power spectra to be greater than oceanic ones and attribute this to the relative thicknesses of continental and oceanic crust. |
| File Size | 1084126 |
| File Format | |
| Language | English |
| Publisher Date | 2000-01-01 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Geomagnetism Power Spectra Earth Crust Estimating Data Processing Magnetic Fields Magsat Satellites Crusts Anomalies Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
