- 一般社団法人 日本応用地質学会
- 応用地質 (ISSN:02867737)
- vol.1, no.3, pp.19-29, 1960-07-31 (Released:2010-06-04)
Japanese National Railways, famous for its Kammon undersea tunnel, is now carrying out his next marine geological survey in three localities, i. e. Tsugaru, Akashi and Naruto Straits. We can have much more useful methods than in Kammon days, and so the secret of deeper, wider, and rapidswifting sea bottom is revealed step by step by tight combination of all possible survey works.