Asymmetric Seafloor Spreading south of Australia

SINCE mid-1968, the National Science Foundation research vessel Eltanin has operated south of Australia on a systematic geological, geophysical, and oceanographic reconnaissance. North-south tracks at a spacing of 5° longitude or closer transect the area of interest from 140° E to 105° E. The Eltanin data are supplemented by geophysical data from Lamont-Doherty ships, from Australian, French and Japanese sources, and from aeromagnetic tracks.