Fig. 8From: An experimental approach to unravel 2D ground resonances: application to an alluvial-sedimentary basinExamples of directional H/V obtained with 10-degree angle steps at the same measurement sites shown in Fig. 7. The location of each example site is shown with a blue dot in Fig. 6. The maximum peak amplitude at about 0.3–0.4 Hz is observed for angles equal to 80, 120 and 130 degrees (counterclockwise from north)Back to article page