Damage and management of geoheritage due to earthquake disaster

2023 Fiscal Year Final Research Report

• Project/Area Number: 19K23134
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0104:Geography, cultural anthropology, folklore, and related fields
• Research Institution: Tohoku Gakuin University
• Principal Investigator: MOKUDAI Kuniyasu 東北学院大学, 地域総合学部, 准教授 (80396605)
• Project Period (FY): 2019-08-30 – 2024-03-31
• Keywords: 地形遺産 / ジオモルフォサイト / 地すべり地形 / 震災遺構 / ジオパーク / ジオサイト

Outline of Final Research Achievements

The geomorphological heritage, including the Aratozawa landslide, which is preserved as a Geosite in Mt. Kurikoma Area Geopark, Miyagi Prefecture, appeared during the Iwate-Miyagi Nairiku Earthquake in 2008. The Aratozawa landslide did not undergo any major landform change at the time of the 2011 off the Pacific coast of Tohoku Earthquake because the head of the landslide had been cleared in advance as part of a landslide control project. On the other hand, landslide landforms are composed of surface sediments and soft rocks, and their morphology is continuously changing. When preserving landslide landforms as geomorphological heritage, the landform changes after their emergence should be included.

Free Research Field

自然地理学

Academic Significance and Societal Importance of the Research Achievements

生物に関する保護・保全の方法論は，多くの実践があり，その方法論についても多くの議論がある．一方で，地形の保存に関しては，その実践が少ない．また，保護すべき地形は，地質露頭といった地質遺産と保護の方法論が異なるものであるが，その議論も十分ではない．本研究によって，状態が変化しやすい地形についての保護の方法についての議論がすすんだ．