The proposed research project focuses on building a new understanding of the architecture of magma reservoirs from the mantle to the crust with emphasis on clarifying the volume and distribution of melt in volcanic storage regions, and the loading it causes on nearby faults. The ultimate goal of this proposal is to advance the capability of data-driven geophysical models to constrain melt volumes, geometries, magma properties and fault loading, thus linking imaging to the ability to forecast eruption cycles and seismicity by gaining insights into the mass transport and rate changes through the entire system, including the factors that control stalling versus ascent of magmas.