Abstract
Records of the historic eruptions in Japan were compiled by Omori (1918), Musha (1941, 1943a・b, 1951), Kuno (1962), and Japan Meteorological Agency (1975). Detailed information of these eruptions, however, is not always available in older writings. Interpretation and evaluation of the historic records by means of tephrochronology in the field and petrology of the volcanic products are essential to recognize the type, sequence and scale of the historic emptions, the result of which provides us important information for the estimation of future eruptions and mitigation of volcanic hazards. For this purpose, a list of the historic eruptions in northern Japan and that of the chemistry of their essential products are presented here, with some discussions on the estimation of future emptions.
