SES-04. Magnetic Maps and Models for Alternative Navigation

Abstract
Maps and models of the geomagnetic field are increasingly applied in advanced applications including directional drilling control, magnetic anomaly navigation, and other advanced applications. Holistic geomagnetic models include multiple components: the core field from satellite data; the crustal anomaly field from survey measurements; and the disturbance field from measurements and/or models. Directional drilling operations use magnetic models for subsurface azimuth determination. Magnetic anomaly navigation (MagNav) relies on understanding, characterizing, and quantifying geomagnetic fields and anomalies. Predictive analysis, whether by physical-based, machine learning or statistical methods, may use magnetic maps/models as input data for the estimation of geologic or environmental parameters. A key requirement for the effective use of geomagnetic models in advanced applications is the quantification of model uncertainty. This poster will explore how core field modeling, magnetic anomaly mapping techniques, and field disturbance models can provide useful and trustworthy components of holistic geomagnetic models for advanced applications.