爆破地震動観測による東北日本を横断する測線上の地殻構造

第1部 気仙沼沖, 男鹿半島沖および土畑爆破による地震動の観測

抄録

In the middle of March 1965, more than fifty shots were fired at sea Off Kesennuma in the northeastern part of Honshu for sixteen temporary observation sites on land and a receiving vessel. The amount of explosives is relatively small, 450kg in maximum, in comparison with the land shots. In early March 1966, an explosion at Tutihata Mine and twenty-one shots at the Off Oga Peninsula were fired for almost the same temporary stations with those in the Off Kesennuma explosions. In these experiments, good records were obtained through the profile. These experiments in the northeastern part of Honshu are described and the observational results are presented.