Combined seismic methods for 3D modeling of quarternary deposits: Application to Skopje sedimentary basin

Znanstveni rad - Izvorni znanstveni rad

• Autor: Irena Gjorgjeska
• Autor: Vlatko Sheshov
• Autor: Kemal Edip
• Autor: Julijana Bojadjieva
• Autorova ustanova: Sveučilište u Zagrebu; Građevinski fakultet
• Znanstveno / umjetničko područje, polje i grana: TEHNIČKE ZNANOSTI; Građevinarstvo

Sažetak (engleski)

The large number of catastrophic earthquakes that have occurred worldwide and their
consequences point out the fact that the seismo-geological structure of the terrain represents
an amplitude-frequency modifier of the seismic effect. The unconsolidated sediments lying upon
the bedrock as well as the variations of the bedrock topography may increase the amplification
potential of the seismic effects depending on their physical properties and thickness. From this
aspect, there arises the need for obtaining as realistic as possible insight into the structure of the
terrain, i.e., definition of the geometry of the sedimentary basins. Particular attention in this study
was paid to definition of thickness variation of alluvial unconsolidated deposits that constitute
the Skopje sedimentary basin, reaching a depth of down to 200 m, as well as the topography of
the Neogene sediments present in the terrain base. For that purpose, preliminary 3D geological
modelling was done by interpolation of a number of boreholes made in the urban area of Skopje
city. Geophysical surveys were performed by application of active and passive seismic methods
as are seismic refraction, seismic reflection, Multichannel Analysis of Surface Waves (MASW),
Refraction Microtremor (REMI) and Horizontal-to-Vertical Spectral Ratio (HVSR) for the purpose
of defining the variation of the shear-wave velocity Vs through different lithological layers as
well as upgrading and improving the accuracy of the 3D model. Of particular importance for this
survey was the implementation of fast, economical and efficient procedure by using the combined
seismic methods approach, which enabled seismo-geological modeling to different scales as well
as comparative analysis of the results and verification of their accuracy

• Ključne riječi (engleski): combined seismic methods, quaternary deposits, 3D model
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Nepoznato
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov zbornika: 1st Croatian Conference on Earthquake Engineering 1CroCEE
• Brojčani podaci: str. 299-306
• p-ISSN: 3043-8071
• DOI: https://doi.org/10.5592/CO/1CroCEE.2021.168
• URN:NBN: urn:nbn:hr:237:538581
• Datum objave publikacije: 2021-03
• Skup: Naziv: st Croatian Conference on Earthquake Engineering; Lokacija: Zagreb, Hrvatska; Datum početka: 2021-03-22; Datum završetka: 2021-03-24; Vrsta izlaganja: Predavanje
• Vrsta resursa: Tekst
• Izdavač: Sveučilište u Zagrebu Građevinski fakultet
• Prava pristupa: Otvoreni pristup
• Datum i vrijeme pohrane: 2024-08-30 09:26:10