Chau Chong Shing, Jorge LuisWoodman Pollitt, Ronald FranciscoScipión, Danny2016-10-142017-12-212016-10-142017-12-212004-06-27http://hdl.handle.net/20.500.12816/662Doppler velocities of 150-km echoes represents the vertical ExB drift velocities at F region altitudes. 150-km observations represent and excelent mean of monitoring the electric fields at equatorial latitudes. Low power observations of 150-km echoes using the JULIA system have been carried out almost continuosly since August 2001 at Jicamarca [e.g., Anderson et al., 2004]. Most of the observations have been done pointing perpendiculat to the magnetic fiel (B) in the magnetic meridian, allowing the measurement of the vertical component of the ExB drift.application/pdfenginfo:eu-repo/semantics/openAccessRadarHigh atmosphereAtmospheric dispersionMagnetic fieldinfo:eu-repo/semantics/conferenceObjecthttp://purl.org/pe-repo/ocde/ford#1.05.01http://purl.org/pe-repo/ocde/ford#1.05.00