Analysis of the strong motion data of the 1995 Dinar, Turkey earthquake

Durukal, E.; Erdik, Mustafa; Avci, J; Yüzügüllü, Ö.; Alpay, Y. O.; Avar, Begüm; Zülfikar, Can; Biro, Yesim; Mert, A.

doi:10.1016/s0267-7261(98)00036-0

Cited by 32 publications

(21 citation statements)

References 6 publications

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“…Most of these buildings collapsed or were heavily damaged. Some lower story buildings in the basin suffered similar damage (DURUKAL et al, 1998). The maximum damaged area is shown in Figure 3a.…”

Section: Datamentioning

confidence: 91%

“…This figure shows that the depth of basement rock can reach 200-250 meters. The depth of alluvium increases through the west and reaches a uniform depth of about 100 m beneath the town (DURUKAL et al, 1998;BAKIR et al, 2002).…”

Section: Tectonics and Geologymentioning

confidence: 99%

“…This hypothesis is not valid here, because the vertical component records probably include phase interactions and phase conversions due to local heterogeneities, as we will mention later (e.g., REIPL et al, 1997;YALCINKAYA and ALPTEKIN, 2003b). Although the sediment thickness beneath the stations within the basin is not well known, it is foreseen to be about 100 m thick, from the data of deep water wells opened in the basin (BAKIR et al, 2002;DURUKAL et al, 1998). The highest amplitude peaks observed near 2 Hz and 1.5 Hz on the EW and NS components, respectively, at the stations within the basin cannot be the fundamental soil frequencies, because for a sediment thickness of 100 m of the fundamental soil frequency which is computed by the quarter wavelength rule (f ¼ V S =4 H ) is 0.75 Hz, if the average S-wave velocity of the sediment is taken 300 m/sec.…”

Section: Site Effectsmentioning

confidence: 99%

“…The Dinar earthquake occurred on the Dinar fault which borders the eastern edge of Dinar basin ( Figure 2). While the structures located within the Dinar basin were heavily damaged, the structures located on the relatively strong hard rock were not damaged or very lightly damaged during the earthquake (DURUKAL et al, 1998;ANSAL et al, 2001). In previous studies, a relation between the damaged properties and the site characteristics in Dinar has been sought (KAYABALI, 1997;ANSAL et al, 2001;BAKIR et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

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Contributions of Basin-edge-induced Surface Waves to Site Effect in the Dinar Basin, Southwestern Turkey

Yalçınkaya

Alptekin

2005

Pure appl. geophys.

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Ground motion amplifications in the Dinar basin, and contributions of the surface waves generated from basin edges are investigated in frequency and time domains. Amplification functions are computed from the aftershock data of the October 1, 1995 Dinar earthquake (M W ¼ 6:4) using the Standard Spectral Ratio method which requires a pair of instruments; one located at the site under investigation (generally on alluvium) and the other on a reference site, preferably a nearby rock site. First, a time window covering the whole signal is used to compute the amplification function, and, successively, the noise, P wave, S wave and the surface wave time windows are used in computation to observe their contributions to the amplification function. It is seen that the maximum amplifications observed at about 2.0 Hz on the amplification functions of the stations located in the basin are largely due to basin edge induced surface waves. These waves have significantly increased the duration of signals recorded within the basin. Particularly, on the vertical component records, the amplitudes of surface waves are larger than the S-wave amplitudes. The periods of waves amplified maximally due to the basin structure coincide with the natural periods of 4-6-story buildings which were heavily damaged in Dinar. This indicates that the site effects may have been important regarding the damage which occurred during the Dinar earthquake of October 1995.

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Section: Datamentioning

confidence: 91%

Section: Tectonics and Geologymentioning

confidence: 99%

Section: Site Effectsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Contributions of Basin-edge-induced Surface Waves to Site Effect in the Dinar Basin, Southwestern Turkey

Yalçınkaya

Alptekin

2005

Pure appl. geophys.

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“…1). Despite its moderate size, the impact of the earthquake was large and about 20% of the buildings collapsed or were damaged beyond repair [Durukal et al 1998;Ansal et al, 2001].…”

Section: Introductionmentioning

confidence: 99%

A Systematic Geophysical Approach for Site Response of the Dinar Region, Southwestern Turkey

Kanlı

Kang

Pınar

et al. 2008

Journal of Earthquake Engineering

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On 1 October 1995, the Dinar earthquake (Mw 6.1) devastated the city of Dinar in southwestern Turkey. We investigated the effects of geological conditions on the localized damage patterns using microtremor survey and multichannel analysis of surface waves. The microtremor survey was carried out in and around the Dinar basin to determine the resonance frequencies and depths of the sedimentary layer at 38 different locations using a broadband seismometer. The shear-wave velocity profile of the basin sediments was estimated from the inversion of the microtremor horizontal-to-vertical spectrum based on surface waves from seismic noise at each site using a genetic algorithm. The average shear-wave velocities estimated from the multichannel analysis of surface waves experiments were given as constraints in the inversion. A new relationship between the thickness of basin sediment and the main peak frequency in the horizontal-to-vertical spectral ratios was derived. This relationship allows a zonation of the Dinar region, which is consistent with previous studies and can be importantly used for the seismic hazard evaluation of the region.

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Strong-Motion Data Acquisition, Processing and Utilization with Applications to Istanbul Strong Motion Network

Erdik

Fahjan

Durukal

Nato Science Series: IV: Earth and Environmental Sciences

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Analysis of the strong motion data of the 1995 Dinar, Turkey earthquake

Cited by 32 publications

References 6 publications

Contributions of Basin-edge-induced Surface Waves to Site Effect in the Dinar Basin, Southwestern Turkey

Contributions of Basin-edge-induced Surface Waves to Site Effect in the Dinar Basin, Southwestern Turkey

A Systematic Geophysical Approach for Site Response of the Dinar Region, Southwestern Turkey

Strong-Motion Data Acquisition, Processing and Utilization with Applications to Istanbul Strong Motion Network

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