Answer all the questions:
10 x 2 = 20
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Explain about reverse faults.
Explain origin of earthquakes on the basis of elastic rebound theory.
Define hypo centre with neat diagram.
How many dragons and toads are used in “earthquake weather cock” and why?
Prove Vp > Vs using mathematical expression.
Explain components of energies involved in earthquake.
Mention the assumptions to be made in the estimation of energy from seismic moment.
Calculate the radiation efficiency if the ER is 5 x 1016 J and Wo is 1.4 x 1018 J and also explain
from the result, what type of event it is?
9. Define super shear with an example.
10. Calculate the seismic moment if rigidity modulus of a rock is 80 x 103 pascal, displacement offset
is 15 metre and the fault area is 1300 km.
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Describe briefly about the hydro geochemical precursors.
What are the required parameters for successful prediction earthquakes?
Give two examples for the successful prediction of CN and M8 Algorithm.
Explain about Dilatancy.
Explain about gravity method used to predict earthquakes.
What is meant by active illumination?
Explain about tidal generation force resonance.
Explain about the usefulness of “Earthquake Early Warning” system.
What is the possible reason to use coronal mass ejection as a tool to predict the earthquakes?
Explain the amplitude of SES signals gives clues about the impending earthquakes.
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Explain about reverse faults.
Explain origin of earthquakes on the basis of elastic rebound theory.
Define hypo centre with neat diagram.
How many dragons and toads are used in “earthquake weather cock” and why?
Prove Vp > Vs using mathematical expression.
Draw the graph between stress and geological time.
Why tsunami generic earthquakes are releasing lesser radiated energy?
Define Super shear.
Explain the energy distribution of earthquakes?
Compare active illumination and passive illumination.
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Define elastic rebound theory.
Why oceanic plates are having lesser thickness compared to continental plates?
Prove mathematically the P – waves are travelling faster than S – waves.
Categorise the structure of earth based on their physical composition.
Explain about transform plate boundaries.
Classify the faults based on motion.
Explain about island arcs.
Compare the volcanoes formed by Oceanic – continental convergence and Oceanic – oceanic
convergence.
Explain about hanging wall and foot wall.
Explain the orientation of forces for the different types of faults.
Why eight toads are used in the Chinese seismograph?
What are the different types of scales available for measuring earthquakes?
Why P – waves are able to travel in all types of mediums?
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Categorise the earthquakes on the basis of difference in depth.
What are the effects of earthquakes?
Explain the relation between the velocity and amplitude of a tsunami wave.
Compare mathematically ordinary oceanic wave and tsunami wave.
Derive equation for depth phase.
Explain about theory of waves.
Calculate the difference in energy and ground motion between Mw – 5.3 and Mw – 7.7
earthquakes.
Why earthquakes are often occurring in the plate boundary region?
Draw the graph between stress and geological time to describe regular sequence and irregular
sequence in earthquake occurrence.
Why shallow earthquakes are more brittle in nature?
Why 1994 Bolivian event can be called as thermal event rather than an earthquake?
What are the energies involved in the earthquakes?
Why local magnitude and surface magnitude are considered as less accurate measurement
techniques?
Explain about static and dynamic parameters involved in faulting.
Prove seismic moment is nothing but energy.
Why surface magnitude has saturation in its measurement?
Define stiffness of a fault system.
Describe briefly about the hydro geochemical precursors.
Why statistical method cannot be used for short term prediction?
Give two examples for the successful prediction of CN and M8 Algorithm.
Explain about Dilatancy.
Why aquatic animals have better response to seismic electric signals than terrestrial animals?
What is meant by active illumination?
Explain about tidal generation force resonance.
Explain about the usefulness of “Earthquake Early Warning” system.
What is the possible reason to use coronal mass ejection as a tool to predict the earthquakes?
What is meant by tidal coupling?
71. Why oceanic plates are having lesser thickness compared to continental plates?
72. Prove mathematically the P – waves are travelling faster than S – waves.
73. Compare the volcanoes formed by Oceanic – continental convergence and Oceanic – oceanic
convergence.
74. Why the oceanic plates always subducted beneath the continental plates always?
75. Why P – waves are able to travel in all types of mediums?
76. Draw beach ball diagram for the given values Dip = 45, Strike = 160 and Slip = -160.
77. Compare mathematically ordinary oceanic wave and tsunami wave.
78. Derive equation for depth phase.
79. Calculate the difference in energy and ground motion between M w – 5.7 and Mw – 7.7
earthquakes.
80. Explain the difference between the tsunami wave and oceanic wave in terms energy.