SCIENCE OBJECTIVES. THE VOYAGER MISSION PROVIDES US WITH EXCITING INFORMATION ABOUT PHYSICAL PROCESSES OCCURRING IN THE OUTER HELIOSPHERE WHICH IS ESPECIALLY COMPLICATED BEYOND THE HELIOSPHERIC TERMINATION SHOCK (TS) AND IN THE LOCAL INTERSTELLAR MEDIUM (LISM). OBSERVATIONS PERFORMED BY VOYAGER 1 (V1) AND VOYAGER 2 (V2) AT THE SAME DISTANCE FROM THE SUN ARE SOMETIMES MARKEDLY DIFFERENT. SIMULATIONS OF OUR TEAM DEMONSTRATE THAT MAGNETIC FIELD OBSERVATIONS IN THE INNER HELIOSHEATH (IHS) BETWEEN THE TS AND THE HELIOPAUSE ARE CONSISTENT WITH MAGNETIC FIELD DETERIORATION. OUR MODELING OF A THOUGHT EXPERIMENT WHERE THE HELIOSPHERIC MAGNETIC FIELD (HMF) IS ASSUMED TO BE UNIPOLAR SHOWS THAT THIS ASSUMPTION RESULTS IN AN HMF STRENGTH 5-7 TIMES GREATER THAN THAT OBSERVED BY V1 AND V2 I.E. THE HELIOSPHERIC CURRENT SHEET (HCS) PLAYS AN IMPORTANT ROLE IN THE DETERIORATION PROCESS. MHD SIMULATIONS IN THE HCS PRESENCE SHOW A TRANSITION TO STOCHASTIC BEHAVIOR OF THE HMF IN THE REGIONS OF SPATIALLY COMPRESSED HCS. SUCH SIMULATIONS ARE IN AGREEMENT WITH THE LOCAL PARTICLE-IN-CELL SIMULATIONS. THE GOAL OF THIS PROPOSAL IS TO USE DATA FOR IDENTIFICATION OF MECHANISMS RESPONSIBLE FOR MAGNETIC FIELD DECREASE IN THE IHS AND RECIPIENTS OF THE RELEASED ENERGY. THIS WILL BE DONE BY PURSUING THE FOLLOWING OBJECTIVES: 1. ANALYSIS OF V1 AND V2 DATA WITH RESPECT TO THE NUMBER OF HCS CROSSINGS AND COMPARISON OF THOSE NUMBERS WITH TIME-DEPENDENT (KINEMATIC) NUMERICAL PREDICTIONS; 2. ANALYSIS OF MAGNETIC FIELD VELOCITY AND DENSITY FLUCTUATIONS AT VOYAGERS AND COMPARISON OF OBTAINED TURBULENCE SPECTRA (A) INSIDE AND OUTSIDE THE REGION SWEPT BY THE HCS (B) IN THE PRESENCE OF GLOBAL MERGED INTERACTION REGIONS (GMIRS) AND WITHOUT THEM (C) IN FRONT OF AND BEHIND THE TS AND (D) IN THE LISM; 3. SEARCH DATA FOR SIGNATURES OF MAGNETIC RECONNECTION IN THE IHS. 4. ANALYZE TURBULENCE INTERMITTENCY. DATA ANALYSIS METHODOLOGY AND SIMULATIONS. THE TEAM HAS RECORD OF VOYAGER DATA ANALYSIS AND SIMULATIONS OF THE SW AND ITS INTERACTION WITH THE INTERSTELLAR MEDIUM. USING A SIMPLIFIED MODEL OF THE SW CO-I RICHARDSON HAS PERFORMED A PILOT ANALYSIS OF THE RELATIONSHIP BETWEEN THE NUMBERS OF OBSERVED AND PREDICTED HCS CROSSINGS USING THE DAILY AVERAGES ARCHIVED AT HTTP:// SPDF.GSFC.NASA.GOV. OUR TEAM ANALYZED THE SW VELOCITY DENSITY AND MAGNETIC FIELD FLUCTUATIONS AT 5 AU USING FIVE DATA TREATMENT TECHNIQUES: AVERAGES OF LINEARLY INTERPOLATED SUBSETS CORRELATION WITHOUT DATA INTERPOLATION CORRELATION OF LINEARLY INTERPOLATED DATA MAXIMUM LIKELIHOOD DATA RECONSTRUCTION AND COMPRESSED SENSING SPECTRAL ESTIMATION. SIMILAR ANALYSIS IS EXTENDED TO THE IHS AND LISM WHEREAS THE TIME INTERVALS WILL BE CHOSEN TO REFLECT THE POSITIONS OF VOYAGERS WITH RESPECT TO THE SECTORED HMF REGIONS THE TS AND GMIRS. SUCH ANALYSIS REQUIRES 48 S DATA WHICH ARE ALSO AVAILABLE. TO INVESTIGATE MAGNETIC RECONNECTION AS A REASON FOR HMF BEHAVIOR WE WILL ANALYZE THE CORRELATION BETWEEN MAGNETIC FIELD AND DENSITY FLUCTUATIONS. MISSION DATA TO BE USED. WE WILL USE THE PLS AND MAG DATA FROM V2 AND MAG AND PWS DATA FROM V1. WE WILL ALSO USE SUPPLEMENTARY VELOCITY RECONSTRUCTIONS DERIVED FROM THE LECP DATA. RELEVANCE TO THE GOALS OF THE VOYAGER MISSION. THE PROPOSED WORK FITS THE MAIN OBJECTIVE OF THE VOYAGER MISSION TO EXTEND THE NASA EXPLORATION OF THE SOLAR SYSTEM BEYOND THE NEIGHBORHOOD OF THE OUTER PLANETS TO THE OUTER LIMITS OF THE SUN'S SPHERE OF INFLUENCE AND BEYOND. THIS WORK ALSO ADDRESSES TWO SCIENCE GOALS FROM THE MOST RECENT HELIOPHYSICS DECADAL SURVEY: (I) DETERMINE THE INTERACTION OF THE SUN WITH THE SOLAR SYSTEM AND THE INTERSTELLAR MEDIUM AND (II) DISCOVER AND CHARACTERIZE FUNDAMENTAL PROCESSES THAT OCCUR BOTH WITHIN THE HELIOSPHERE AND THROUGHOUT THE UNIVERSE.