Shear wave velocity structure of the İzmit Bay area (Turkey) estimated from active-passive array surface wave and single-station microtremor methods: Shear velocity structure of the İzmit area

To provide quantitative information on the shear wave velocity structure of the İzmit Bay area, we conduct active–passive array surface wave and single-station microtremor measurements at 60 sites. We process these array measurements to produce combined Rayleigh wave dispersion curves that span a broad-frequency range (0.5–20 Hz). We also make use of horizontal-to-vertical spectral ratio (HVSR) cu...