CSIR-NET 2019 Dec
CSIR-NET 2019 Dec Q) In a Homogenous isotropic elastic medium, the P-wave travels 1.5 times faster than the S-wave. The ratio of $\frac{\lambda}{\mu}$ of the lames constant $\lambda$ …
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CSIR-NET 2019 JUNE
CSIR-NET 96) The travel time differences between the P and S arrivals at two stations A and B are 3 sec and 4 sec Respectively, while the difference in the P- wave arrival time between the same s…
CSIR NET- JUNE 2019
CSIR NET- JUNE 2019 97) A seismic source at a depth of 20m generates a seismic wave which is reflected and recorded at the surface at an offset distance of 30m, Assuming that the…
CSIR-NET JUNE 2019
CSIR-NET JUNE 2019 A 1km thick elevated land mass of density 2.7 gm/cc is associated with a free anomaly which is half the Bouguer anomaly. If the density contrast at the crust mantle boundry is 0.3…
GATE-2019, CSIR-NET 2019 JUNE
102. The apparent resistivities measured with Wenner and Schlumberger arrays are the same when equal amounts of currents are passed through current electrodes and equal potential differences are d…
Assistant Geophysicist Solutions
97. In a seismic reflection survey, the inferred upper and lower layer velocities are 2 km/s and 6 km/s, respectively. The depth of the refractor is 0.5 km. What will be the crossover distance? …
CSIR-NET 2019 DEC
Q) A sandstone formation has porosities varying from 10-30%. The 100% water saturated sand with 10% porosity has a formation resistivity of 0.5 Ωm. what is the hydrocarbon saturation (%) in the s…
CSIR-NET 2019 DEC 101
101) An MT Survey was conducted over a fault. If one of the axis of measurement coincides with the fault extension, then the impedance elements Z xx, Zyy , Z xy and Z yx are (Thanks to Chandrasek…
CSIR-NET 2019 DEC
35. The total amount of an element dissolved in the Ocean is $10^7$ kg and its removal rate from seawater is $10^5$ g/y. Under steady-state condition, the residence time of the element is (1) 1…
CSIR-NET 2019 JUNE 82
CSIR_NET_JUNE_2019 82) From a drill length of 200 cm individual cores of 30cm, 20cm, 40cm, and 12 cm lengths were obtained from a rock mass. What is the Rock Quality Designatio…
CSIR-NET 2019 JUNE 98
98) In a Seismic reflection survey over a Dipping interface separating two media with the velocity in the Upper medium being 2000 m/sec, the travel times of the reflected waves at offset distances o…
CSIR-NET-Dec-2019 (26)
26) The Gravity anomaly recorded at a point A on the edge of a faulted block of material of limited throw t(as shown in figure) is 2 milligals What would be the maximum gravity anomaly that can be …
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