Decipherment of historical earthquake stone markers using 3D shape restoration method: Application for historical Nankai earthquake research and education for disaster prevention

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K12487
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Natural disaster / Disaster prevention science
• Research Institution: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: TANIKAWA Wataru 国立研究開発法人海洋研究開発機構, 高知コア研究所, 主任研究員 (70435840)
• Research Collaborator: OKAMOTO Keisuke 高知県立歴史民俗資料館, 副館長
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 南海トラフ地震 / 地震津波碑 / SfM / 文化財 / デジタルアーカイブ

Outline of Final Research Achievements

44 stone markers that describe the disastrous records and instructive message about historical earthquake from the Hoei Earthquake to the Showa Nankai Earthquake are observed in the coastal area of Kochi Prefecture. We took photo of stone monuments on digital camera and measured the rock magnetic properties. 31 3D digital models were constructed using multi-view structure from Motion (SfM) method with digital photo images. We succeeded in making precise models that the characters on monuments can be clearly read. We confirmed that the 3D objects can be edited and introduced by web-based 3D viewer and 3 D pdf files, and used to make a reproduction using a 3D printer. The 3D models were exhibited to introduce the local cultural properties at a museum of history.

Free Research Field

海底下掘削コア試料の岩石物性測定を用いた巨大地震断層プロセスを理解する研究