Magnetic fields are intrinsic properties of planets. They are – in general – detected by the force they exert on magnetic materials and electrical charges. This principle is used in magnetometers onboard spacecraft with which magnetic fields around planets are detected and measured. Intrinsic magnetic fields are generated deep inside planets by dynamo action. Because this requires regions of electrically conducting material and energy sources to maintain the dynamo, we can learn about the deep interiors of planets by investigating their magnetic fields. In this talk, we’ll explore some of the interesting questions and possible answers about planetary interiors that have come from studies of planetary magnetism.
Sabine Stanley is the Morton K. Blaustein Chair and Bloomberg Distinguished Professor in the Department of Earth & Planetary Sciences at the Johns Hopkins University in Baltimore, Md. Dr. Stanley’s research aims to understand planetary interior processes and planetary evolution. Her focus is on modeling – using numerical methods – to simulate how planetary magnetic fields are created as a means of studying the deep interior of planets. Sabine covers dynamo theory of the terrestrial planets but also of the giant planets of the outer solar system. In addition, she studies small bodies and extends her research to extra- solar objects. She is involved in planetary missions such as InSight and uses her models to explain their observations.
This webinar was recorded on October 21, 2021