The 2018 Hokkaido Eastern Iburi earthquake with the JMA seismic intensity of 7 occurred at a central south part of Hokkaido, Japan at 3:08 a.m. on September 6, 2018. Considering the social importance of this historical earthquake-induced geo-disaster, the Japanese Geotechnical Society (JGS) organized a “JGS Survey Team for Geotechnical Disasters in Hokkaido, Japan Induced by the 2018 Hokkaido Eastern Iburi earthquake,” mainly comprised of experts from the industry and academia of the Hokkaido branch of JGS. The aim of the survey team was to investigate the phenomena and factors which contributed to disaster recovery and disaster prevention/mitigation from both short- and mid- to long-term perspectives, and to provide academic advice to related government organizations. Based on the results of the site investigations conducted by the JGS survey team (JGS, 2019), this report provides a summary of the geotechnical damage caused by 2018 Hokkaido Eastern Iburi earthquake by presenting the detail of strong seismic motion and a various types of geo-disasters which occurred due to the earthquake. Furthermore, this report highlights future research issues on disaster prevention/mitigation in Hokkaido considering the features of the geo-disasters attributed to the earthquake.

2018 年 9 月 6 日凌晨 3 点 08 分，日本北海道中南部发生 JMA 烈度为 7 级的 2018 年北海道东部伊布里地震。岩土学会（JGS）组织了“2018年北海道东部伊布里地震诱发日本北海道岩土灾害JGS调查组”，主要由JGS北海道分会的产学界专家组成。调查组的目的是从短期和中期到长期的角度调查有助于灾难恢复和防灾/减灾的现象和因素，并为相关政府组织提供学术建议。本报告根据 JGS 调查小组 (JGS, 2019) 进行的现场调查结果，通过呈现强地震运动的详细信息和各种类型的地质灾害，总结了 2018 年北海道东伊武里地震造成的岩土工程损坏。 - 因地震而发生的灾害。此外，考虑到地震引起的地质灾害的特征，本报告重点介绍了北海道防灾/减灾的未来研究问题。