Inicio  /  Geosciences  /  Vol: 9 Par: 7 (2019)  /  Artículo
ARTÍCULO
TITULO

Assessment of the Seismic Site Amplification in the City of Ivanec (NW Part of Croatia) Using the Microtremor HVSR Method and Equivalent-Linear Site Response Analysis

Davor Stanko    
Snje?ana Marku?ic    
Mario Gazdek    
Vedran Sankovic    
Ivan Slukan and Ines Ivancic    

Resumen

The city of Ivanec is located between valley of the Bednja River and Mt. Ivan?cica and this area can be prone to significant seismic site amplification due to local site characteristics. This study presents the first assessment of seismic site amplification for the city of Ivanec by the microtremor horizontal-to-vertical-spectral-ratio (HVSR) method and the equivalent-linear (EQL) site response analysis. Based on microtremor measurements and HVSR analysis, fundamental soil frequency and HVSR peak amplitude maps indicate potentially seismic danger zones. The 1-D EQL site response analysis was performed using multiple suites of earthquake ground motions scaled to the 95- and 475-year return periods of peak ground accelerations. Site amplification maps at the predominant peak frequency and ground surface indicate two microzones, one with high amplification in the central part of the city due to soft soil characteristics, and the other with small amplification in the transitional zone from alluvial basin towards the foothills of Mt. Ivan?cica. HVSR peak amplitudes and site response peak amplifications showed similar spatial distributions with similar predominant peak frequencies but with different amplitude levels. Site amplification maps provided significant information about potential resonance effects for structures of certain heights that can be correlated with the local ground shaking characteristics.

 Artículos similares

       
 
Claudia Meisina, Roberta Bonì, Massimiliano Bordoni, Carlo Giovanni Lai, Francesca Bozzoni, Renato Maria Cosentini, Doriano Castaldini, Daniela Fontana, Stefano Lugli, Alessandro Ghinoi, Luca Martelli and Paolo Severi    
Liquefaction-induced surface manifestations are the result of a complex geological?geotechnical phenomenon, driven by several controlling factors. We propose a multidisciplinary methodological approach, involving engineering geologists, geomorphologists,... ver más
Revista: Geosciences

 
Marc Peruzzetto, Anne Mangeney, Gilles Grandjean, Clara Levy, Yannick Thiery, Jérémy Rohmer and Antoine Lucas    
A key point of landslide hazard assessment is the estimation of their runout. Empirical relations linking angle of reach to volume can be used relatively easily, but they are generally associated with large uncertainties as they do not consider the topog... ver más
Revista: Geosciences

 
Zorigt Tumurbaatar, Hiroyuki Miura and Tsoggerel Tsamba    
Due to the population growth and urban sprawl in Ulaanbaatar city (UB), Mongolia, hazard and risk analysis for future earthquakes have become an important issue for disaster mitigation planning. Evaluation of a site effect is one of the essential parts o... ver más
Revista: Geosciences

 
Adam L. Atchley, Kay H. Birdsell, Kelly Crowell, Richard S. Middleton and Philip H. Stauffer    
Long-term environmental performance assessments of natural processes, including erosion, are critically important for waste repository site evaluation. However, assessing a site?s ability to continuously function is challenging due to parameter uncertain... ver más
Revista: Geosciences

 
Diego Lo Presti, Stefano Stacul, Claudia Meisina, Massimiliano Bordoni and Marco Bittelli    
A proper assessment of the soil effective stress state is crucial in many cases to identify a potential geological/geotechnical hazard as shallow landslides or failure of levees that may have a significant impact on human activities and development. This... ver más
Revista: Geosciences