Q0.
(a) Q1. Define with a neat sketch the first Fresnel Zone.
(b) Define its width (3 + 2) quantitatively.\n Define 1-D heat diffusion equation and its solution to describe heat transfer in offshore (ocean floor) regions. (3 + 2)\n
(c)
In a 3-D seismic survey using S-waves, what is the bin size that is expected for imaging a dipping reflector (dip = 10°) at Hz maximum frequency? Assume minimum shear wave speed of 1.5 km/sec.
(5) \n
(d) For a seismic survey done at sea, by detonating underwater charge,
(e)
draw schematically the ray path diagram of possible phases. Plot the characteristics of pressure field as it is modified by sea surface. (3 + 2)\n List different types of remote sensing techniques and basic elements of photography.
(5) \n(f) Briefly write about permeability and its relationship to Darcy's Law.
(5) \n(g) Verify the differentiation property of Fourier transform (dx(t)/dt) ↔ jω × X(ω).
(5) \n(h) Determine whether the given signal is periodic or not. If the signal is periodic, determine its fundamental period. x(t) = sin2 t
(5)
