In our flights, because of the difference in gravitational attraction
associated with the presence of water instead of rock beneath the
ice tongue, our airborne gravimeter was sufficiently sensitive to duplicate the Autosub measurements and to determine the shape of the cavity beyond the ridge.
In discussing their findings, Fountain et al. report that «no significant spatial or temporal patterns of terminus position, flow speed, or calving emerged, implying that the conditions
associated with
ice tongue stability are unchanged,» at least over the past six decades.