GIS based approach to analyze soil liquefaction and amplification: A case study in Eskisehir, Turkey

• Main Author: Okur Volkan
• Format: Article
• Language: English
• Published: De Gruyter 2018-12-01
• Series: Open Geosciences
• Subjects: earthquake hazard mitigation; voxel analyst; geographic information system; liquefaction; soil amplification
• Online Access: https://doi.org/10.1515/geo-2018-0067

This study involves gathering the geological and geotechnical data and processing them in 3D structural model for the assessment of the likelihood of liquefaction hazard. A total of 467 borehole logs up to 30 m of depth were analyzed. Based on engineering characteristics of the soil formation, Geographical Information System based subsurface model maps and liquefaction hazard maps were prepared. Also microtremor measurements have been taken on different locations to assess the amplification of the alluvial formation. By obtaining amplification spectrum between the soil layers and response spectra at the top of the bedrock and at ground surface, a thematic map on amplification factor is produced. It is believed such kind of visual models will help engineers and designers on all aspects of future development of the cities especially transportation, infrastructure, and land uses against possible earthquake hazards.