Traces of the earthquakes and the flood events at archaeological ruins investigated by magnetic study.

2015 Fiscal Year Final Research Report

• Project/Area Number: 25560135
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Cultural assets study and museology
• Research Institution: University of Toyama
• Principal Investigator: SAKAI Hideo 富山大学, 大学院理工学研究部(理学), 教授 (30134993)
• Co-Investigator(Kenkyū-buntansha): HORIKAWA Keiji 富山大学, 大学院理工学研究部(理学), 准教授 (40467858) ; KAWASAKI Kazuo 富山大学, 大学院理工学研究部(理学), 助教 (60624806)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 磁化 / 噴砂 / 洪水 / 年代

Outline of Final Research Achievements

Magnetic study was conducted on the traces of earthquakes and flood events at the archaeological ruins of Niigata and Toyama Prefectures. The archaeomagnetic dating method was useful to investigate the age of sand boiling which the 14C dating method could not apply. The magnetic method was also effective to date the traces of flood sediment. Further, using the magnetic properties of the sediments, we successfully cleared the earthquake-induced deformation of the sediment structure. The study of archaeological sites for evidence of paleo-earthquakes and flood events is important in relation to the disaster-prevention science and the further progress is expected in magnetic studies at these sites.

Free Research Field

考古地磁気