2-D Electric Fields from the IMAGE EUV Plasmaspheric Imager D. Gallagher and T. Newman The IMAGE extreme ultraviolet imager (EUV) has proven capable of being used to infer the inner magnetospheric electric field component perpendicular to steep plasmaspheric density gradients, such as the plasmapause boundary. This initial application of EUV images to determining electric fields has already yielded valuable insight into the shielding of solar wind electric fields from the inner magnetosphere and the influence of subauroral polarization streams or SAPS on plasmaspheric erosion. The question remains whether EUV observations can be used to develop a more complete global picture of electric fields, which are needed to advance our understanding of subauroral ionospheric-magnetospheric coupling. A multiple-patch cross-correlation technique is being developed to provide thermal plasma drift velocities throughout the EUV field of view. These velocities can then be used to derive the 2-dimensional electric field driving that plasma motion. The technique and initial results of this new approach to EUV image analysis will be presented. _______________ Global Aspects of Magnetosphere-Ionosphere Coupling, 2006 Yosemite Workshop, Yosemite National Park, CA, USA, 7-10 February 2006