Sadayuki Koresawa

Low Power Amplifier and Tape Recorder for the Ocean Bottom Seismograph

Junzo Kasahara, Syozaburo Nagumo, Sadayuki Koresawa, 1974 .

41. Improvements of Ocean-Bottom Seismograph : Construction of a Long-Life Magnetic Tape Recorder

Shozaburo Nagumo, Sadayuki Koresawa, Heihachiro Kobayashi, 1968 .

43. Ocean-bottom Seismographic Observation off Sanriku-Aftershock Activity of the 1968 Tokachi-Oki Earthquake and Its Relation to the Ocean-Continent Boundary Fault

Shozaburo Nagumo, Sadayuki Koresawa, Heihachiro Kobayashi, 1970 .

44. Construction of Ocean Bottom Seismograph

Shozaburo Nagumo, Sadayuki Koresawa, Heihachiro Kobayashi, 1966 .