A COMPREHENSIVE STUDY OF TITAN'S MAGNETIC ENVIRONMENTWE PLAN TO DEVELOP A COMPREHENSIVE PICTURE OF THE AMBIENT MAGNETIC FIELD CONDITIONS ALONG TITAN'S ORBIT AND THE FIELD PERTURBATIONS WITHIN THE MOON'S INDUCED MAGNETOSPHERE BY APPLYING A COMBINATION OF CASSINI MAGNETIC FIELD (MAG) DATA ANALYSIS AND HYBRID (KINETIC IONS FLUID ELECTRONS) PLASMA SIMULATIONS. IN THE FIRST PART OF THE PROJECT WE WILL APPLY THE CLASSIFICATION TECHNIQUE OF SIMON ET AL. (2010) TO ALL AVAILABLE CROSSINGS OF TITAN'S ORBIT AND DETERMINE WHETHER THESE CROSSINGS TOOK PLACE IN A CURRENT SHEET OR A LOBE-TYPE MAGNETOSPHERIC ENVIRONMENT. THESE RESULTS WILL THEN BE COMBINED TO AN EMPIRICAL MODEL OF TITAN'S MAGNETIC ENVIRONMENT PROVIDING THE PROBABILITY FOR THE OCCURRENCE OF EACH ENVIRONMENT CATEGORY AS A FUNCTION OF SATURNIAN LOCAL TIME AND SEASON IN THE SATURNIAN YEAR. THIS MODEL WILL BE COMPARED TO AN ANALOGOUS SURVEY OF THE MAGNETOSPHERIC ELECTRON POPULATIONS ALONG TITAN'S ORBIT (SMITH AND RYMER 2014). THE SECOND PART OF THE PROJECT DEALS WITH A SYSTEMATIC CHARACTERIZATION OF THE EXTENSIONS AND MAGNITUDES OF THE FIELD PERTURBATIONS IN TITAN'S RAMSIDE MAGNETIC PILE-UP REGION AND WAKESIDE MAGNETOTAIL. BY TRANSFORMING MAG DATA INTO A DRAPING COORDINATE SYSTEM THAT TAKES INTO ACCOUNT THE LOCAL MAGNETIC FIELD ORIENTATION THE DEPENDENCY OF THESE STRUCTURES ON TITAN'S ORBITAL POSITION ON THE DISTANCE TO THE MOON AND ON THE TYPE OF THE MAGNETOSPHERIC ENVIRONMENT (CURRENT SHEET MAGNETODISK LOBE) WILL BE INVESTIGATED. CASSINI MAG DATA FROM ALL TITAN FLYBYS WILL THEN BE SUPERIMPOSED TO GENERATE AVERAGED PROFILES OF THE MOON'S INDUCED MAGNETOSPHERE WHEN EXPOSED TO A CERTAIN TYPE OF PLASMA ENVIRONMENT. IN THE THIRD PART OF THE PROJECT THESE PROFILES OF TITAN'S INDUCED MAGNETOSPHERE WILL BE COMPARED AGAINST THE OUTPUT OF A HYBRID SIMULATION OF TITAN'S PLASMA INTERACTION. IN THIS WAY WE SHALL INFER WHETHER THE SUPERPOSITION OF MAG DATA FROM MULTIPLE FLYBYS ALLOWS TO CONSTRUCT A QUANTITATIVELY CONSISTENT THREE-DIMENSIONAL PICTURE OF THE AVERAGE STATE OF TITAN'S INDUCED MAGNETOSPHERE. STATEMENT OF RELEVANCE: THIS PROJECT WILL SIGNIFICANTLY ENHANCE OUR UNDERSTANDING OF CASSINI MAGNETOMETER DATA FROM ALL AVAILABLE CASSINI CROSSINGS OF TITAN'S ORBIT. DATA FROM MULTIPLE FLYBYS WILL BE COMBINED TO CHARACTERIZE THE AMBIENT MAGNETIC FIELD NEAR TITAN AND THE RESPONSE OF THE MOON'S INDUCED MAGNETOSPHERE TO DIFFERENT AMBIENT FIELD REGIMES. BY COMPARING OUR RESULTS AGAINST THE AVAILABLE CATEGORIZATIONS OF THE ELECTRON POPULATIONS NEAR TITAN THIS PROJECT WILL ALSO FACILITATE THE UNDERSTANDING OF CASSINI ELECTRON DATA FROM THE TITAN FLYBYS. THUS THE DATA ANALYSIS COMPONENT OF THE PROPOSED INVESTIGATION WILL MAKE SIGNIFICANT USE OF/GREATLY ENHANCE THE INTERPRETATION OF DATA FROM CASSINI'S INSTRUMENTS AS REQUIRED IN SECTION 1.1 PAGE C.10-1 OF THE ANNOUNCEMENT TEXT FOR THE CASSINI DATA ANALYSIS (CDAP) PROGRAM. IN ADDITION THE HYBRID MODELLING COMPONENT WILL SIGNIFICANTLY "FACILITATE THE INTERPRETATION OF MISSION DATA" AS REQUIRED IN SECTION 1.1 OF THE ANNOUNCEMENT FOR CDAP (CF. PAGE C.10-1). THUS THIS WORK HAS SIGNIFICANT RELEVANCE TO THE CASSINI DATA ANALYSIS PROGRAM AND IS THEREFORE RELEVANT TO NASA.