Large magma reservoir discovered beneath Long Valley supervolcano

The Long Valley supervolcano erupted 760,000 years ago, forming a massive caldera. Since 1978, uplift in the caldera center suggests magma inflow. Seismic tomography by USGS researchers revealed a detailed view of the subsurface, showing a reservoir with 240 cubic miles of semi-molten magma, 27% of which is liquid.

What has been observed in the caldera center since 1978?

How much semi-molten magma is contained beneath the supervolcano?