Development of regional spherical coordinate electromagnetic forward modeling with non-uniform sources

Anna Kelbert1, Gary D Egbert2, Huiqian Zhang2,3 and Qi Han4, (1)USGS Geological Hazards Science Center, Geomagnetism Program, Golden, CO, United States, (2)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, (3)ITAG Institute of Theoretical and Applied Geophysics, Peking University, Institute of Theoretical and Applied Geophysics, Beijing, China, (4)China University of Geosciences Wuhan, Wuhan, China