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Flow Type Deformations of Onshore Soils in Adiyaman-Golbasi During February 06, 2023 Kahramanmaras Earthquakes

On February 06, 2023 two consecutive earthquakes took place in Kahramanmaras Province causing extensive ground surface deformations in Golbasi, Adiyaman. Golbasi is located on the south and north bank of Golbasi Lake, a pull-apart tectonic depression basin. Flow type deformations occasionally observed along the coastline of Golbasi took attention of researchers following the earthquake. Although there is evidence of flows on the north bank, the most spectacular example was seen on the south coast of the lake. A large portion of an recreational area including buildings sank into the water posing flow type deformations. Since the mechanism (sliding of softened cohesive or liquefaction of sandy soils) causing such large deformations has not yet been understood yet, a preliminary site investigation study including acquisition of images using unmanned aerial vehicles, microtremor measurements to obtain V_s30 and V_s100 profile and boreholes was realized. Preliminary results involve elevation map of the study area after the earthquake, 2D and 3D illustrations of the site and the soil profile. The study concludes with two dimensional slope stability analyses.

Session: February 2023 Mw 7.8 Earthquake Sequence in Turkey [Poster]

Type: Poster

Room: Ballroom

Date: 4/19/2023

Presentation Time: 08:00 AM (local time)

Presenting Author: Okan Tatar

Student Presenter: Yes

Additional Authors