Evaluation of Soil Liquefaction Potential by Using Microtremor Measurements in Trabzon, Turkey


CEYLAN S., BABACAN A. E. , AKIN Ö.

New Trends in Geophysics and Engineering 2018, İstanbul, Turkey, 7 - 09 November 2018, pp.1-5

  • Publication Type: Conference Paper / Full Text
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.1-5

Abstract

Single station microtremor recordings are useful for determination of ground characteristics. By using this method predominant period (predominant frequency), H/V ratio, sediment thickness and vulnerability index can be obtained. Also the method has been using to specify building resonance risk during earthquakes in the last decades. In this study the aim is estimate ground parameters  and their relationship with selected buildings at The Karadeniz Technical University (KTU) campus area in order to define how to response against earthquakes. The H/V ratio and predominant frequency values in the campus area have been calculated by Nakamura Method from the microtremor recordings. By using these data vulnerability index have been obtained for the 6 buildings located in the campus area. As result, the predominant periods change between 0.17-0.49 s. The predominant frequencies point out that the resonance risk is low for these buildings. The H/V ratios of the ground change between 1-3 and they are lower than the buildings ratios which change between 5.0-8.5. According to the results, vulnerability index of the northeastern part of the campus area is higher the other parts.