Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

M. Kousalya ¹, T. Seshunarayana ¹, P. Prabhakara Prasad ¹

Affiliations
1 National Geophysical Research Institute, Hyderabad - 500 007, IN

Abstract

Measurement of vibrations caused by vehicular traffic around Charminar, a monument at Hyderabad, was carried out using three component velocity sensors and high-resolution digital seismograph. These measurements were done at different levels viz., ground, middle, top level and at other accessible levels of the structure. Acceleration and displacement were computed from the velocity-time series. Peak particle velocity was found maximum at the top level in the north-south direction.

Keywords

Environmental Geophysics, Archaeo-Geophysics, Vibration, Velocity, Acceleration, Displacement, Charminar, Andhra Pradesh.

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T. Seshunarayana ¹, P. Prabhakara Prasad ¹, S. V. V. Prasada Rao ¹, K. Subrahmanyam ¹, G. Varadarajan ¹

Affiliations
1 National Geophysical Research Institute, Hyderabad, IN

Abstract

Crosshole seismic survey was conducted to decipher the nature of the exposed rock mass in Hussain Sagar Lake at Hyderabad to erect a monolithic Buddha statue weighing about 470 tonnes. The purspose of the survey was to determine the continuity of subsurface conditions between borehole locations. The technique consists of in situ measurements of travel time of the seismic waves generated by an impulse in one borehole, its reception in the other and computation of seismic velocity. Analysis of the velocity data provided necessary information regarding the soundness of the rock mass.

Keywords

Tomography, Crosshole Seismics, Detectors, P and S waves, Shear wave, Andhra Pradesh.

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