大島の地球物理学的研究の綜括

抄録

The results of geophysical researches on Volcano O-sima by pioneers and active investigaters are reviewed in the general discussion from the standpoint of the following items: §1. Earthquakes and volcanic tremors. §2. Geomagnetism. §3. Gravity. §4. Physical properties of rocks. §5. Topography and geothermotics. In the special discussion, the reviewer describes energetics in Volcano Mihara during 1950-54 summarizing the results of various observations and the internal constitution of the central part of that volcano which has a caldera of Glen Coe type: §6. Energetics. §7. Caldera formation.