Abstract:Direct measurements of the geomagnetic field are available through ground observatories and navigators' data for the last 400 years (Jonkers et al., 2003) and satellite measurements for the last decades. For earlier periods, the data are obtained through the archeomagnetic study of archeological baked materials and volcanic rocks that acquire, during their last cooling, a thermoremanent magnetization (TRM) whose direction is parallel, and intensity is proportional to the intensity of the local geomagnetic fiel… Show more
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.