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| | Abstract | | We conducted high-resolution shallow seismic reflection survey and surface-wave survey at Ikinomatsubara area, Fukuoka City to image shallow basement structure. Two about 600m-long S-wave seismic lines were set along the coastal line. One is in pine tree forest (Line 1) and the other is just outside the forest and about 20m from the coastal line(Line 2). The distance between the two lines is about 50m. The surface-wave survey was conducted only on Line2. We compared the result of two surveys on Line2. The reflection depth sections profile several continuous reflection events at the near surface. The velocity section by the surface-wave survey shows velocity change at the depth of 6-10m. This chage correspond to the reflection from the basement in the reflection survey. |
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