The Japanese researches participated in the Dry Valley Drilling Project (DVDP) in the McMurdo Sound region during the 1973-1974 summer season. This project was jointly organized by New Zealand. the United States of America and Japan. and started in the austral summer of 1971-1972 with preliminary investigations-the first phase-such as seismic soundings and aeromagnetic survey. https://pipingrockers.shop/product-category/ojibwa-esiak/