Spatial variation model of seismic ground motion for Istanbul

Ebru HARMANDAR; Eser ÇAKTI; Mustafa ERDİK

doi:https://doi.org/10.24012/dumf.701211

Article Details

Spatial variation model of seismic ground motion for Istanbul

Authors:

Ebru HARMANDAR | Eser ÇAKTI | Mustafa ERDİK

Publisher:

Dicle University

Main Topics:

Engineering and applied operations

Journal:

Dicle Üniversitesi Mühendislik Fakültesi Mühendislik Dergisi 2021 Vol.12 Issue 1, pp.111-131

Document Type:

Article

Publication Date:

1/2021

Document Language:

English

Document ID (Org No.):

2000949935

Frequency:

Quarterly

eISSN:

2146-4391

pISSN:

1309-8640

DOI:

https://doi.org/10.24012/dumf.701211

Keywords:

Abstract:

 

Earthquake induced base motions of elongated structures will not be uniform. This variation of ground motion has a nonnegligible effect on the dynamic response of lifelines that has led to investigations of characterization and modelling of the spatially varying earthquake ground motion within the last decade. In this context, spatial variation of seismic ground motion in Istanbul is analysed. After the introduction of the concept of coherency function and its conventional estimation procedure, estimation of coherency from recorded data and its interpretation are presented. The lagged coherency is calculated by the conventional coherency estimation scheme applied to six earthquakes registered by the Istanbul Earthquake Rapid Response System. A coherency model for Istanbul is derived that will enable to simulate spatially variable ground motion needed as input in the design of extended structures. Simulation of ground motion at pairs of closely spaced locations is presented that consider the derived coherencies in their scheme. The results are compared with actual recordings from the same locations. Simulation of spatially variable ground motion consistent with a coherency function is stated.

 

Earthquake induced base motions of elongated structures will not be uniform. This variation of ground motion has a nonnegligible effect on the dynamic response of lifelines that has led to investigations of characterization and modelling of the spatially varying earthquake ground motion within the last decade. In this context, spatial variation of seismic ground motion in Istanbul is analysed. After the introduction of the concept of coherency function and its conventional estimation procedure, estimation of coherency from recorded data and its interpretation are presented. The lagged coherency is calculated by the conventional coherency estimation scheme applied to six earthquakes registered by the Istanbul Earthquake Rapid Response System. A coherency model for Istanbul is derived that will enable to simulate spatially variable ground motion needed as input in the design of extended structures. Simulation of ground motion at pairs of closely spaced locations is presented that consider the derived coherencies in their scheme. The results are compared with actual recordings from the same locations. Simulation of spatially variable ground motion consistent with a coherency function is stated.

Article Details

Spatial variation model of seismic ground motion for Istanbul

Authors:

Ebru HARMANDAR | Eser ÇAKTI | Mustafa ERDİK

Publisher:

Dicle University

Main Topics:

Engineering and applied operations

Journal:

Dicle Üniversitesi Mühendislik Fakültesi Mühendislik Dergisi 2021 Vol.12 Issue 1, pp.111-131

Document Type:

Article

Publication Date:

1/2021

Document Language:

English

Document ID (Org No.):

2000949935

Frequency:

Quarterly

eISSN:

2146-4391

pISSN:

1309-8640

DOI:

https://doi.org/10.24012/dumf.701211

Istanbul Earthquake Rapid Response System

Coherency Model

Target Spectrum

Spectral Matching

Spatially Variable Simulated Earthquake Data

Issues

Article Details

Spatial variation model of seismic ground motion for Istanbul

Authors: Ebru HARMANDAR | Eser ÇAKTI | Mustafa ERDİK

Publisher: Dicle University

Main Topics: Engineering and applied operations

Journal: Dicle Üniversitesi Mühendislik Fakültesi Mühendislik Dergisi 2021 Vol.12 Issue 1, pp.111-131

Document Type: Article

Publication Date: 1/2021

Document Language: English

Document ID (Org No.): 2000949935

Frequency: Quarterly

eISSN: 2146-4391

pISSN: 1309-8640

DOI: https://doi.org/10.24012/dumf.701211

Istanbul Earthquake Rapid Response System

Coherency Model

Target Spectrum

Spectral Matching

Spatially Variable Simulated Earthquake Data

Issues

Authors:

Ebru HARMANDAR | Eser ÇAKTI | Mustafa ERDİK

Publisher:

Dicle University

Main Topics:

Engineering and applied operations

Journal:

Dicle Üniversitesi Mühendislik Fakültesi Mühendislik Dergisi 2021 Vol.12 Issue 1, pp.111-131

Document Type:

Article

Publication Date:

1/2021

Document Language:

English

Document ID (Org No.):

2000949935

Frequency:

Quarterly

eISSN:

2146-4391

pISSN:

1309-8640

DOI:

https://doi.org/10.24012/dumf.701211