INTEGRATED SEISMIC MICROZONATION FOR URBAN RESILIENCE: THE CASE OF ESKISEHIR CITY CENTER

Sunay Mutlu; Yücel Güney; Muammer Tün

doi:10.18038/estubtda.1746850

TR EN

INTEGRATED SEISMIC MICROZONATION FOR URBAN RESILIENCE: THE CASE OF ESKISEHIR CITY CENTER

Abstract

Enhancing urban resilience in seismically active regions is essential for reducing disaster risks and ensuring sustainable development. This study characterizes the dynamic engineering parameters of soils in Eskisehir’s city center, a region situated in Central Anatolia that faces high seismic risk due to its young alluvial deposits and proximity to active faults. To achieve this, detailed geophysical surveys were conducted using seismic refraction and microtremor (HVSR) methods at selected locations, and the resulting data were analyzed using Geographic Information Systems (GIS). The findings reveal significant spatial heterogeneity in soil behavior within the upper 30 meters. Specifically, Vs₃₀ values across the study area were found to range from 145 to 990 m/s, with low-velocity zones (145–315 m/s) heavily concentrated in densely populated districts. Consequently, the GIS-based Site Amplification (Fa) maps exhibited values ranging from 0.92 to 1.70, pinpointing specific zones with high seismic amplification potential. Furthermore, while fundamental site periods varied between 0.09–2.86 s, a critical concentration of periods in the 0.43–0.85 s range was identified. This range directly corresponds to the natural vibration periods of 4-8 story reinforced concrete buildings, indicating a high potential for destructive soil-structure resonance. These quantitative results provide an operational basis for multi-level planning processes specifically for defining priority zones in urban transformation and enforcing height restrictions in land-use decision-making thereby demonstrating the strategic role of geophysical methods in multidisciplinary disaster management.

Keywords

Urban Resilience, Seismic Microzonation, Vs30, Site Amplification, GIS

Project Number

1105F095

INTEGRATED SEISMIC MICROZONATION FOR URBAN RESILIENCE: THE CASE OF ESKISEHIR CITY CENTER

Abstract

IEnhancing urban resilience in seismically active regions is essential for reducing disaster risks and ensuring sustainable development. This study characterizes the dynamic engineering parameters of soils in Eskisehir’s city center, a region situated in Central Anatolia that faces high seismic risk due to its young alluvial deposits and proximity to active faults. To achieve this, detailed geophysical surveys were conducted using seismic refraction and microtremor (HVSR) methods at selected locations, and the resulting data were analyzed using Geographic Information Systems (GIS). The findings reveal significant spatial heterogeneity in soil behavior within the upper 30 meters. Specifically, Vs₃₀ values across the study area were found to range from 145 to 990 m/s, with low-velocity zones (145–315 m/s) heavily concentrated in densely populated districts. Consequently, the GIS-based Site Amplification (Fa) maps exhibited values ranging from 0.92 to 1.70, pinpointing specific zones with high seismic amplification potential. Furthermore, while fundamental site periods varied between 0.09–2.86 s, a critical concentration of periods in the 0.43–0.85 s range was identified. This range directly corresponds to the natural vibration periods of 4-8 story reinforced concrete buildings, indicating a high potential for destructive soil-structure resonance. These quantitative results provide an operational basis for multi-level planning processes specifically for defining priority zones in urban transformation and enforcing height restrictions in land-use decision-making thereby demonstrating the strategic role of geophysical methods in multidisciplinary disaster management.

Keywords

Urban Resilience, Seismic Microzonation, Vs30, Site Amplification, GIS

Project Number

1105F095

References

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Details

Primary Language

English

Subjects

Earthquake Engineering, Geographical Information Systems (GIS) in Planning, Geological Sciences and Engineering (Other)

Journal Section

Research Article

Authors

Sunay Mutlu ^*
0000-0002-3350-696X
Türkiye

Yücel Güney
0000-0001-9246-706X
Türkiye

Muammer Tün
0000-0002-7118-9977
Türkiye

Publication Date

March 27, 2026

Submission Date

July 20, 2025

Acceptance Date

March 3, 2026

Published in Issue

Year 2026 Volume: 27 Number: 1

DOI

https://doi.org/10.18038/estubtda.1746850

IZ

https://izlik.org/JA79ZK85YA

APA

Mutlu, S., Güney, Y., & Tün, M. (2026). INTEGRATED SEISMIC MICROZONATION FOR URBAN RESILIENCE: THE CASE OF ESKISEHIR CITY CENTER. Eskişehir Technical University Journal of Science and Technology A - Applied Sciences and Engineering, 27(1), 79-98. https://doi.org/10.18038/estubtda.1746850

AMA

1.Mutlu S, Güney Y, Tün M. INTEGRATED SEISMIC MICROZONATION FOR URBAN RESILIENCE: THE CASE OF ESKISEHIR CITY CENTER. Estuscience - Se. 2026;27(1):79-98. doi:10.18038/estubtda.1746850

Chicago

Mutlu, Sunay, Yücel Güney, and Muammer Tün. 2026. “INTEGRATED SEISMIC MICROZONATION FOR URBAN RESILIENCE: THE CASE OF ESKISEHIR CITY CENTER”. Eskişehir Technical University Journal of Science and Technology A - Applied Sciences and Engineering 27 (1): 79-98. https://doi.org/10.18038/estubtda.1746850.

EndNote

Mutlu S, Güney Y, Tün M (March 1, 2026) INTEGRATED SEISMIC MICROZONATION FOR URBAN RESILIENCE: THE CASE OF ESKISEHIR CITY CENTER. Eskişehir Technical University Journal of Science and Technology A - Applied Sciences and Engineering 27 1 79–98.

IEEE

[1]S. Mutlu, Y. Güney, and M. Tün, “INTEGRATED SEISMIC MICROZONATION FOR URBAN RESILIENCE: THE CASE OF ESKISEHIR CITY CENTER”, Estuscience - Se, vol. 27, no. 1, pp. 79–98, Mar. 2026, doi: 10.18038/estubtda.1746850.

ISNAD

Mutlu, Sunay - Güney, Yücel - Tün, Muammer. “INTEGRATED SEISMIC MICROZONATION FOR URBAN RESILIENCE: THE CASE OF ESKISEHIR CITY CENTER”. Eskişehir Technical University Journal of Science and Technology A - Applied Sciences and Engineering 27/1 (March 1, 2026): 79-98. https://doi.org/10.18038/estubtda.1746850.

JAMA

1.Mutlu S, Güney Y, Tün M. INTEGRATED SEISMIC MICROZONATION FOR URBAN RESILIENCE: THE CASE OF ESKISEHIR CITY CENTER. Estuscience - Se. 2026;27:79–98.

MLA

Mutlu, Sunay, et al. “INTEGRATED SEISMIC MICROZONATION FOR URBAN RESILIENCE: THE CASE OF ESKISEHIR CITY CENTER”. Eskişehir Technical University Journal of Science and Technology A - Applied Sciences and Engineering, vol. 27, no. 1, Mar. 2026, pp. 79-98, doi:10.18038/estubtda.1746850.

Vancouver

1.Sunay Mutlu, Yücel Güney, Muammer Tün. INTEGRATED SEISMIC MICROZONATION FOR URBAN RESILIENCE: THE CASE OF ESKISEHIR CITY CENTER. Estuscience - Se. 2026 Mar. 1;27(1):79-98. doi:10.18038/estubtda.1746850

INTEGRATED SEISMIC MICROZONATION FOR URBAN RESILIENCE: THE CASE OF ESKISEHIR CITY CENTER

Abstract

Keywords

Project Number

INTEGRATED SEISMIC MICROZONATION FOR URBAN RESILIENCE: THE CASE OF ESKISEHIR CITY CENTER

Abstract

Keywords

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