This directory contains a collection of ancillary geophysical 
data for the region.  Data types include: heat flow, sonobuoy, 
navigation, earthquake, and volcano digital data files 
previously published in Marine Geological and Geophysical 
Atlas of the Circum-Antarctic to 30S, edited by D.E. Hayes, 
p.56, Antarctic Research series, v. 54, AGU, Washington, 
DC., 1991.  These data files were contributed by Dennis Hayes 
of Lamont-Doherty Earth Observatory.