IN ORDER TO BETTER UNDERSTAND THE RELATIONSHIP BETWEEN SEISMIC AND ASEISMIC FAULT SLIP ON BOTH THE PLATE INTERFACE AND THE FAULTS OVERLYING IT THIS PROJECT WILL INVESTIGATE THESE INTERACTIONS WITH BOTH INTERFEROMETRIC SYNTHETIC APERTURE RADAR (INSAR) AND GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS) GEODETIC DATA TO CONSTRAIN THE PHYSICAL PROCESSES THAT CONTROL THE INTERPLAY BETWEEN SLOW SLIP AND OVERLYING CRUSTAL FAULTS. THE LARGE MAGNITUDE OF DEEP HIKURANGI SLOW SLIP EVENTS (PRODUCING UP TO 4~CM OF HORIZONTAL AND VERTICAL SURFACE DISPLACEMENTS) AND THEIR POSITION DIRECTLY BENEATH THE LAND PROVIDE AN OPPORTUNITY TO USE INSAR TO IMAGE SLOW SLIP AT A MUCH GREATER SPATIAL RESOLUTION THAN GNSS DATA ALONE.