Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) CHIBA Hajime and TAKEUCHI Akira and MoRII Yasuhiro and Hoshina Souta and TSUTSUI Hideto,Deep Sea Bottom Methane Hydrate Investigations Aboard Fisheries Training Ship II -Investigations of methane plume generation using various ultrasonic instrumentsā€,The Journal of Japan Institute of Navigation,0388-7405,Japan Institute of Navigation,2023,149,0,39-47,https://cir.nii.ac.jp/crid/1390580793828126464,https://doi.org/10.9749/jin.149.39