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Assessment Of Seismic Crosshole Tomography And Testing Surveys In Site Characterization Of High-Rise Building Along Shore LineNormal access

Authors: M. Sharafeldin, T. Fechner, N. Sayıl and H. Karslı
Event name: 9th Congress of the Balkan Geophysical Society
Session: 3.01 Site Investigation
Publication date: 05 November 2017
DOI: 10.3997/2214-4609.201702505
Organisations: BGS, EAGE
Language: English
Info: Extended abstract, PDF ( 1.14Mb )
Price: € 20

Summary:
Seismic tomography, cross-hole, and downhole tests conducted to characterize a site of high-rise building of 448 m and 308 m height along shore line. An excellent high quality seismic data were obtained for the most of the source and receiver configurations. Results obtained from all different seismic testing methods showed highly reciprocal agreement and support each other excellent. Resulting S- and P-wave velocity profiles and vertical sections towards Sea Coast, indicated comparatively low seismic velocities coincide with soft rocks and sediments. On the opposite side of the site, a remarkable high velocity observed indicating hard rock below 60 m until the end of the boreholes. The sudden velocity increase observed in the eastern borehole triple might indicate a geological structure of unknown striking somewhere between the two sets which need more investigations.


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