The gravity method in groundwater exploration in crystalline rocks: a study in the peninsular granitic region of Hyderabad, India

Murty, B. V. Satyanarayana; Raghavan, V. K.

doi:10.1007/s10040-001-0184-2

Cited by 40 publications

(10 citation statements)

References 7 publications

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“…Fig. Valli and Mattson 1998, Murty and Raghavan 2002, and time-dependent surveys (e.g. A sharper image of the waste pit is obtained.…”

Section: Waste Site Explorationmentioning

confidence: 91%

Groundwater Geophysics

2009

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“…Fig. Valli and Mattson 1998, Murty and Raghavan 2002, and time-dependent surveys (e.g. A sharper image of the waste pit is obtained.…”

Section: Waste Site Explorationmentioning

confidence: 91%

Groundwater Geophysics

2009

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“…is not available for these stations. However, the near-surface and subsurface geophysical investigations by Murthy and Raghavan (2002); Krishnamurthy et al (2003) and Singh et al (2004) indicate a highly weathered zone followed by fractured granite underneath the area where AOU, PML stations are situated and that hard granite existed under PSJ.…”

Section: Datamentioning

confidence: 95%

“…First we have selected PSJ as 'Hard rock site' by following Krishnamurthy et al (2003), Murthy and Raghavan (2002) and therefore is a reference station according to Steidl et al (1996). The spectral ratios are calculated with respect to this station.…”

Section: Spectral Contentmentioning

confidence: 99%

The effects of attenuation and site on the spectra of microearthquakes in the Jubilee Hills region of Hyderabad, India

et al. 2007

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Microearthquake spectra from Jubilee Hills, Hyderabad are analyzed to observe the effect of attenuation and site on these spectra. The ratios of spectral amplitudes at lower and higher frequency are measured for three different stations at varying epicentral distances to estimate Q value for both P-and S-wave in near and sub-surface layer. Average estimates of Qp and Qs are 235 and 278 respectively. Value of Qs/Qp larger than 1.0 suggests dry crust for most of the Jubilee Hills region. The near-surface low Qp and Qs for 0 km to 0.9 km depth coincide with the soil layer, top and semi-weathered and highly fractured zone. In contrast, at a shallower depth beneath the Jubilee Hills area, Hyderabad, we obtain high Qp and Qs zone, which corresponds to the dense and high velocity rocks of the region. The varying corner frequencies for these spectra are inferred to be characteristics of site. Comparisons of disparity in spectral content with reference to hard rock site conclude that lithology of the northwest part of Jubilee Hills area amplify about twice the incoming seismic signal, as compared to the southern part best outlined at 8 to 10 Hz only.

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“…The reconnoitory magnetic survey in a grid form or parallel profiles is quite common in hard rock to delineate basic intrusives and structures, demarcate fault zones and lithological contact Downloaded by [University of Cincinnati] at 07:25 04 June 2016 and also approximate the bed rock topography. Murty and Raghavan (2002) used gravity surveys in granitic terrain to delineate a thick weathered zone. In crystalline rocks of Nigeria Beeson and Jones (1988) used FEM profiling and VES to locate about 85% successful well sites.…”

Section: Introductionmentioning

confidence: 99%

Integrated geophysical survey

2015

Groundwater Geophysics in Hard Rock

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The gravity method in groundwater exploration in crystalline rocks: a study in the peninsular granitic region of Hyderabad, India

Cited by 40 publications

References 7 publications

Groundwater Geophysics

Groundwater Geophysics

The effects of attenuation and site on the spectra of microearthquakes in the Jubilee Hills region of Hyderabad, India

Integrated geophysical survey

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