Evaluation of shear wave velocities using SPT-based uphole: A case study from Erbaa (Tokat-Turkey)

AKIN M., Kramer S. L., Topal T.

4th International Conference on Site Characterization (ISC), Porto Galinhas, Brazil, 17 - 21 September 2012, pp.897-902 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • City: Porto Galinhas
  • Country: Brazil
  • Page Numbers: pp.897-902
  • Abdullah Gül University Affiliated: Yes


The study area, Erbaa, is located along the eastern segment of North Anatolian Fault Zone (NAFZ) and is one of the largest towns of Tokat in Turkey. After the disastrous 1942 (M-s = 7.2) and 1943 (M-s = 7.6) earthquakes, the center of Erbaa was shifted southwards. As a part of a seismic microzonation study, shear wave velocity profiles of Erbaa were developed to perform site response analyses. A modified and a new form of the seismic uphole method which uses the impact energy of the split spoon sampler of SPT test as a source was applied in this study (SPT-based uphole method) to obtain shear wave velocity measurements. In this method, it is aimed to record the shear waves during the SPT test without any additional explosives or mechanical sources. The recorded shear wave velocities are evaluated to define the shear wave velocities of the soil profiles in Erbaa.