During the second Leg a gravimeter was installed very close to center of gravity of R/V Universitatis . A pattern of runlines displaced half way between first leg's magnetometric lines were run, thus increasing the resolution of magnetic data. Table 5 shows the data taken on shore stations for drift measurements. Tie lines were also run for control. System was operating also during transits and sampling stations, positioning data being taken on separate files by a second acquisition computer.
figure
