An adaptive optics imaging system is introduced in this paper. A high resolution liquid crystal on silicon (LCOS) device was used as a phase only wave front corrector instead of a conversional deformable mirror. The wave front aberration was detected by a Shack-Hartmann (SH) wave front sensor, which has lambda/100 rms wave front measurement accuracy. Under this construction 0.09lambda (lambda=0...

We have found that high-quality vertical seismic profile (VSP) data can be collected for near-surface applications using the seismic cone penetrometer. Conemounted accelerometers are used as the VSP receivers, and a sledgehammer against the cone truck baseplate is used as a source. This technique eliminates the need to drill a borehole, thereby reducing the cost of the survey, and results in a ...

The Yığma Tepe of Pergamon is one the largest known burial mounds in Eastern Mediterranean. Its internal structure, especially existence and location burials, remains unknown so far because its height 32 m diameter 158 have restricted extensive excavations. To explore interior Tepe, we applied shear wave reflection profiling traveltime tomography, locally complemented by electrical resistivity ...