A GIS-based study of earthquake hazard as a tool for the microzonation of Bucharest

Kienzle, Alexander; Hannich, D.; Wirth, Wolfgang; Ehret, Dominik; Rohn, Joachim; Ciugudean, Viorica; Czurda, Kurt

doi:10.1016/j.enggeo.2006.05.008

Cited by 32 publications

(15 citation statements)

References 8 publications

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“…Most of these drillings reached a depth between 30 and 70 m below the surface; few were deeper and reached a depth of up to 200 m below the surface. For each geological unit, thickness and depth of its base and of its top were interpolated using ArcGIS to develop a 3D geological model of Bucharest (Kienzle et al, 2006). Consequently, a 3D hydro-geological model was developed and combined with the geological model.…”

Section: Geotechnical Investigationsmentioning

confidence: 99%

Numerical modelling of seismic site effects incorporating non-linearity and groundwater level changes

et al. 2010

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In the past decades, the necessity for detailed earthquake microzonation studies was recognized worldwide. Therefore, different approaches were established and applied. Unfortunately, the majority of these approaches are not based on pre-existing field data but require extensive seismic measurements and investigations. Furthermore, these approaches incorporate non-linearity inadequately and cannot take groundwater level changes into account. For this purpose, notably numerical models are most suitable. These models require a good knowledge of the local geological conditions (especially of the uppermost unconsolidated units), information about the geotechnical parameters of these units, and a hydrogeological model of the investigated area. Most of this information can be obtained from geotechnical investigations and surveys that have already been carried out in most densely populated areas. In a case study for Bucharest City, non-linear analyses were performed using software that is based on the visco-hypoplastic constitutive law. The results indicate that groundwater level changes have an important influence on duration and amplitude of ground response and thus should be considered for seismic microzonation studies. This approach can be used to display site effects and to identify different microzones taking different earthquake magnitudes and groundwater levels into account. KEY WORDS: microzonation, site effect, visco-hypoplasticity, non-linearity,

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Section: Geotechnical Investigationsmentioning

confidence: 99%

Numerical modelling of seismic site effects incorporating non-linearity and groundwater level changes

et al. 2010

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“…whether their modular tool can be used without alterations in any seismic microzonation study. More recently, [19] use GIS interpolating techniques to construct the 3D subsurface profile of the study area by incorporating a rather complex yet automated methodology and then apply linear visco-elastic solutions for estimating the soil amplification. As a whole, their approach is promising yet complicating, and cannot take soil non-linearity into account, a crucial drawback for performing seismic microzonation studies for areas of high seismicity.…”

Section: Introductionmentioning

confidence: 99%

Methodology for automated GIS-aided seismic microzonation studies

Papadimitriou¹,

Antoniou²,

Bouckovalas³

et al. 2008

Computers and Geotechnics

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“…Jimenez et al 2000;Slob et al 2002;Kienzle et al 2006). Note that a seismic microzonation corresponds to the preliminary phase of a seismic risk analysis and mitigation strategy study for an urban area.…”

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confidence: 96%

A geographical information system managing geotechnical data for Athens (Greece) and its use for automated seismic microzonation

2008

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This article presents a geographical information system (GIS) which manages geotechnical data obtained from detailed geotechnical surveys as well as from in situ observations in Athens, Greece. Thoroughly examined data from more than 2,000 exploratory boreholes and trial pits located in the wider area of Athens have been incorporated using a relational database system. From the analysis of these results, thematic maps are compiled to illustrate the distribution of engineering geological information (e.g. the depth of the ''Athens schist'' head). In addition, a methodology for an automated GIS-aided seismic microzonation study is outlined and is being employed taking into account the aforementioned geotechnical and engineering geological information, as well as existing seismological data to estimate the variability of seismic ground motion for the southern part of Athens.

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A GIS-based study of earthquake hazard as a tool for the microzonation of Bucharest

Cited by 32 publications

References 8 publications

Numerical modelling of seismic site effects incorporating non-linearity and groundwater level changes

Numerical modelling of seismic site effects incorporating non-linearity and groundwater level changes

Methodology for automated GIS-aided seismic microzonation studies

A geographical information system managing geotechnical data for Athens (Greece) and its use for automated seismic microzonation

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