Seismic signatures of carbonate caves affected by near-surface absorptions
نویسندگان
چکیده
منابع مشابه
Application of Near Surface Mounted (NSM) technique for Seismic Retrofitting of Heritage Buildings
The high vulnerability of the cultural buildings due to seismic actions urged researchers to retrofit them using reversible and compatible techniques. The application of fiber reinforced polymer (FRP) for enhancing the structural behavior of masonry buildings, under seismic actions, has been studied by many researchers. The near-surface mounting (NSM) technique is a relatively new retrofitting ...
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Among numerous sources emitting pressure waves a few are known to generate acoustic signals both in the earth, as seismic waves, and in the atmosphere, as infrasound, which were recorded over large distances. Those sources are near surface phenomena like volcanic eruptions, explosions, and ocean waves, which all occur at the boundary between the solid earth and the atmosphere, either shallow ab...
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Signals generated by moving tracked vehicles can be significantly affected by near-surface materials including pavements, compacted soils, shallow bed rock, and the water table. The ways that seismic signals depend on these surface layers are examined by analyzing impulsive point forces applied at the earth-air interface. Fields are calculated using a plane layered frequency domain wavenumber m...
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Artificial boundaries are necessary in seismic numerical modeling to constrain the computational limits. Special treatment is necessary to reduce spurious reflections from these artificial boundaries. For near-surface seismic modeling, boundary processing is particularly important due to the presence of surface waves. The Perfectly Matched Layer (PML) method is an efficient way of attenuating b...
متن کاملNear-surface VSP surveys using the seismic cone penetrometer
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 ...
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ژورنال
عنوان ژورنال: Journal of Geophysics and Engineering
سال: 2015
ISSN: 1742-2132,1742-2140
DOI: 10.1088/1742-2132/12/6/1015