Speaker
Description
This study investigates geomagnetic field variations over the South Atlantic Anomaly (SAA) using three regional models developed with the Revised Spherical Cap Harmonic Analysis (R-SCHA). The combined models cover a broad region from 90°W to 35°E in longitude and from 5°S to 49°S in latitude. To effectively capture spatial variability, the study area is divided into three overlapping spherical caps representing the western (South America), central (South Atlantic Ocean), and eastern (southern Africa) sectors. Each region is modelled using a 35° semi-aperture cap centred respectively at 71°W, 29°W, and 14°E, all along 27°S latitude. Preliminary results will be presented, highlighting regions within the SAA experiencing the most rapid magnetic field changes and providing insight into the ongoing restructuring of the anomaly. The analysis will further quantify the contributions of individual magnetic field components to the observed weakening. Particular attention will be given to the development of a second intensity minimum within the SAA. The study explores whether the anomaly will continue to expand, fragment into multiple minima, reorganize, or eventually stabilize.
| Apply for student award at which level: | PhD |
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| Consent on use of personal information: Abstract Submission | Yes, I ACCEPT |