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Magsat investigation of crustal magnetic anomalies in the eastern indian ocean
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Lazarewicz, A. R. Sailor, R. V. |
| Copyright Year | 1983 |
| Description | Crustal magnetic anomalies in a region of the eastern Indian Ocean were studied using data from NASA's MAGSAT mission. The investigation region (0 deg to 50 deg South, 75 to 125 deg East) contains several important tectonic features, including the Broken Ridge, Java Trench, Ninetyeast Ridge, and Southeast Indian Ridge. A large positive magnetic anomaly is associated with the Broken Ridge and smaller positive anomalies correlate with the Ninetyeast Ridge and western Australia. Individual profiles of scalar data (computed from vector components) were considered to determine the overall data quality and resolution capability. A set of MAGSAT ""Quiet-Time'' data was used to compute an equivalent source crustal magnetic anomaly map of the study region. Maps of crustal magnetization and magnetic susceptibility were computed from the equivalent source dipoles. Gravity data were used to help interpretation, and a map of the ratio of magnetization to density contrasts was computed using Poisson's relation. The results are consistent with the hypothesis of induced magnetization of a crustal layer having varying thickness and composition. |
| File Size | 17211942 |
| Page Count | 89 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19830013175 |
| Archival Resource Key | ark:/13960/t40s4m51h |
| Language | English |
| Publisher Date | 1983-02-22 |
| Access Restriction | Open |
| Subject Keyword | Earth Resources And Remote Sensing Geomagnetism Preprocessing Earth Resources Program Earth Gravitation Indian Ocean Mapping Ocean Bottom Magnetic Surveys Bathymeters Earth Crust Poisson Ratio Magnetic Permeability Spectrum Analysis Magnetic Anomalies Magsat Satellites 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 |
