@article{oai:nipr.repo.nii.ac.jp:00002195, author = {Foppiano, Alberto J.}, journal = {Memoirs of National Institute of Polar Research. Special issue}, month = {Aug}, note = {P(論文), Routine ionospheric vertical-incidence soundings were started on 15 February 1986 at 1615 LT in Marsh using an IPS 42 model ionosonde coupled to Delta antennae. Sample ionograms are shown indicating the range of phenomena that can be observed. Conspicuous traces likely to be related to interference from a nearby ionosonde are discussed.}, pages = {318--322}, title = {Ionosonde measurements at Marsh, King George Island: First results}, volume = {48}, year = {1987} }