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Geopotential field anomaly continuation with multi-altitude observations
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Rangelova, Elena Taylor, Patrick von Frese, Ralph Kim, Jeong Woo Kim, Hyung Rae |
| Copyright Year | 2012 |
| Description | Conventional gravity and magnetic anomaly continuation invokes the standard Poisson boundary condition of a zero anomaly at an infinite vertical distance from the observation surface. This simple continuation is limited, however, where multiple altitude slices of the anomaly field have been observed. Increasingly, areas are becoming available constrained by multiple boundary conditions from surface, airborne, and satellite surveys. This paper describes the implementation of continuation with multi-altitude boundary conditions in Cartesian and spherical coordinates and investigates the advantages and limitations of these applications. Continuations by EPS (Equivalent Point Source) inversion and the FT (Fourier Transform), as well as by SCHA (Spherical Cap Harmonic Analysis) are considered. These methods were selected because they are especially well suited for analyzing multi-altitude data over finite patches of the earth such as covered by the ADMAP database. In general, continuations constrained by multi-altitude data surfaces are invariably superior to those constrained by a single altitude data surface due to anomaly measurement errors and the non-uniqueness of continuation. |
| File Size | 4730234 |
| Page Count | 39 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20120010508 |
| Archival Resource Key | ark:/13960/t1rg0qx2g |
| Language | English |
| Publisher Date | 2012-01-01 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Spherical Caps Geomagnetism Point Sources Fourier Transformation Continuity Mathematics Boundary Conditions Harmonic Analysis Magnetic Anomalies Spherical Coordinates Anomalies Cartesian Coordinates Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
