DURING THE FIRST YEAR THE PI WILL GO THROUGH THE DATA FOR ALL THEMIS SPACECRAFT RADIAL CONJUNCTION ORBITS AND SELECT THE BEST ASIS CONJUNCTIONS BY USING THE EMPIRICAL MAGNETIC FIELD MAPPING TECHNIQUE. THE AURORAL IMAGES WILL BE EXAMINED CAREFULLY REGARDING THE STRUCTURE AND AZIMUTHAL WAVELENGTH ESTIMATION. THE CO-I WILL SELECT THE SUBSTORM/PSEUDO-BREAKUP EVENTS AND COLLECT PLASMA AND FIELDS DATA INCLUDING PRESSURES PLASMA DENSITY DIFFERENTIAL FLUX MAGNETIC FIELD AND ELECTRIC FIELD. DURING THE SECOND YEAR THE COLLECTED PLASMA AND FIELDS DATA WILL BE ANALYZED AND THE PLASMA SHEET AND ITS CONJUNCTION AURORAL DEVELOPMENT WILL BE EXAMINED FOR ALL THE EVENTS. THESE WORK WILL BE PERFORMED BY PI AND CO-I TOGETHER. DURING THE THIRD YEAR PI WILL ANALYZE THE BALLOONING INSTABILITY CRITERION TOGETHER WITH THE MIDDLE-TAIL SPACECRAFT TO DETERMINE WHETHER THE INSTABILITY IS LIKELY OCCUR AND THE RELATION BETWEEN THE EARTHWARD PENETRATING FLOW CHANNELS AND THE INSTABILITY INITIATION. THE ELECTRIC FIELD AND ELECTRON OSCILLATIONS WILL ALSO BE EXAMINED AS A TEST TO VALIDATE INSTABILITY DEVELOPMENT. IN THE MEANTIME PI WILL ASSIST CO-I TO PUT MORE EFFORT IN EXAMINING THE MAGNETIC OSCILLATIONS AND ANALYZE THE WAVE PROPERTIES IN THE NEAR- EARTH REGION FOR THE CONJUNCTION EVENTS. THE RELATION BETWEEN THE PI2 BAND DISTURBANCE FLOW CHANNELS AND INSTABILITIES WILL BE DETERMINED. BOTH PART OF THE WORKS WILL BE PUT TOGETHER FOR A MORE COMPREHENSIVE UNDERSTANDING OF THE BALLOONING INSTABILITY AND PLASMA SHEET PROPERTIES DURING DISTURBED TIMES. DURING THIS LAST YEAR WE WILL ALSO IMPROVE THE MAGNETIC FITTING MODEL AS DESCRIBED EARLIER FOR SOME TEST EVENTS AND ACCOMPLISH THE RECONSTRUCTION OF THE MAGNETIC FIELD CONFIGURATION. OUR RESULTS WILL BE PUBLISHED ON PEER REVIEWED JOURNALS JGR OR GRL AND PRESENTED ON DOMESTIC CONFERENCES GEM SUMMER WORKSHOP AGU MEETING AND INTERNATIONAL CONFERENCES COSPAR IAGA AND EGU.