Application of ridge-regression in inversion of low-latitude magnetic anomalies derived from space measurements

Details Application of ridge-regression in inversion of low-latitude magnetic anomalies derived from space measurements Application of ridge-regression in inversion of low-latitude magnetic anomalies derived from space measurements

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987e%26psl..84..277b&link_type=abstract

Earth and Planetary Science Letters (ISSN 0012-821X), vol. 84, no. 2-3, July 1987, p. 277-284.

Computer Science

Sound

7

Earth Crust, Magnetic Anomalies, Magnetic Field Inversions, Regression Analysis, Remote Sensing, Tropical Regions, Magsat Satellites, Satellite Sounding

Scientific paper

Anomalies in total field, horizontal, and vertical components over the Indian region derived from Magsat measurements have been inverted through the ridge-regression method, basically to test: (1) the application of the method in deriving a stable estimate of crustal magnetization, and (2) the relative amount of information on crustal magnetization contained in scalar vis-a-vis vector data. Results show that the instabilities in the magnetization solution that appear when Mayhew's conventional method is applied in low latitudes could be removed through the ridge-regression technique. It was also noticed that magnetization distribution estimated through the inversion of the total field (B) does not relate well with the geological features in the equatorial region. It is concluded that a joint inversion of X- and Z- anomalies provides a magnetization estimate consistent with known geological features both for equatorial and higher latitudes.

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