GATE-2009 (28)
GATE-2009 28. The minimum appreciable amplitude recorded by a seismometer is 0.2mm and the maximum one is 20cm ,then the dynamic range in dB is A) 80 …
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GATE-2009 (27)
GATE-2009 27. A seismic signal is recorded in a frequency band, 50-100Hz . The sampling interval (ms) to avoid aliasing would be A)5 B)60 C)…
GATE-2009 (54&55) The peak gravity anomaly over a 2-D line mass of circular cross-section(horizontal cylinder)
54 & 55) The peak gravity anomaly over a 2-D line mass of circular cross-section(horizontal cylinder) of density contrast 500 kg/m 3 is 1.674 milli gal. The anomaly decreases to 0.8387 m gal a…
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- free air correction 3
- skin depth problem 3
- acceleration due to gravity as on earth 2
- aliasing 2
- signal processing 2
- undersampling 2
- A gravity survey is conducted over a highly compact ore deposit (spherical shape). Bouguer anomaly values reduced along a profile are given below 1
- A tsunami occurs 1000km away form the shore in an ocean water depth of 6.25km. The tsunami reaches the shore in about 1
- A zero-offset reflection event at 1.00 s has a normal move out (NMO) of 0.005 s at 200 m offset. What is the stacking velocity? 1
- Age of the Carbon-14 1
- Airy 1
- Earth's normal gravity field at Colombo is 1
- Electromagnetic methods 1
- Fresnel zone thickness calculation 1
- Isostasy problem 1
- The Young's modulus (E) 1
- The time period of the signal s(t)= sin(π/3)t + cos(π/2)t is__________seconds. 1
- The units of Dynamic viscosity 1
- The value of free-air correction( assuming sea level as datum plane) at an elevation of 150m is......mGal 1
- What is the lithostatic pressure at the base of a 35 km column of granitic crust with an average density of 2.75 gm/cc ? 1
- Wyllie – Time average equation 1
- Youngs modulus of a rock specimen of density 2.7 gm/cc is 9.72 megabar. The longitudinal wave velocity (in km/s) in the rock is 1
- a thrust dipping 30 degrees caused a vertical uplift of a rock surface by 100m in 20 1
- buoyancy force 1
- calculate maximum usable frequency if critical frequency and angle of incidence is known 1
- dip slip fault is 200m and the dip amount is 30 degrees the throw of the fault is 1
- displacement meter 1
- dix formula interval velocity 1
- drift correction problem 1
- earth and mars density ratios are given 1
- eotvos correction solution 1
- focal length and camera height and flying height given then what is the scale 1
- focal length and scale and flying height given then what is the camera height 1
- foldage formula in seismic 1
- the depth to the reflector in seismic 1
- the quantity (h1/ρ1)+(h2/ρ2)+(h3+ρ3) stands 1
- units of hydraulic conductivity 1