@article{oai:nagoya.repo.nii.ac.jp:00011342, author = {鈴木, 康弘 and Suzuki, Yasuhiro and 堀, 正和 and Hori, Masakazu and 松尾, 稔 and Matsuo, Minoru}, journal = {名古屋大学加速器質量分析計業績報告書}, month = {Mar}, note = {Estimation of earthquake recurrence times and characterization of fault behavior provide important data for risk analysis. Inland earthquakes which produced by slip on active faults have recurrence times of more than thousand of years. Historical records of destructive earthquakes is insufficient to characterize the seismicity. Assessment of the seismic potential of an active fault is therefore often difficult. Only geological and geomorphological methods enable to estimate the recurrence times. Analyses of the stratigraphy and Carbon-14 ages of the two boreholes which arranged close to a fault have revealed the last two earthquakes produced by the fault in this study. The last earthquake occurred after 2,500 years before present (yBP), and the penultimate one occurred between 5,300yBP and 4,300yBP. The last one is likely to be correlated with the historical earthquake of 850 A.D.. On this assumption recurrence time is probably estimated to be 3,200〜4,200 years., タンデトロン加速器質量分析計業境報告 Summaries of Researches Using AMS}, pages = {19--25}, title = {ボーリング調査による地震履歴の推定 : 山形県庄内平野東縁活断層調査}, volume = {4}, year = {1993} }