About SAKOI HISAYUKI
About 弘前大 大学院理学研究科
About KOSUGA MASAHIRO
About 弘前大 理工 地震火山観測所
About WATANABE KAZUTOSHI
About 弘前大 理工 地震火山観測所
About Hokkaido
About Physical properties of earthquake
About Seismic activity
About Geothermics,physical volcanology
About 恐山
About 周辺
About 深部低周波地震
About 波形