Tuesday, July 12, 2005

Geophysical explorations – Study the Mother Earth!!!

Rocks are the pieces which will speak their age and origin like our ices. Ice molecules are also a wonderful one which will reveal their age and the temperature at the falling through carbon dating. Archeans are the oldest rocks.
Seismic study will help as to draw the vertical profile of the sub surface earth. The P,S and L waves are very useful in finding this. The L wave will be affected if the molten rocks as well as the temperature.
Magnetic study:
Magnetometers are helpful in finding the magnetic field of earth. The rocks present below will change the magnetic field frequently. Earth normal magnetic fields strength is 0.3 Gauss.
Note: Indira Gandhi Center for Atomic Reactor, Kalpakkam center has developed a Magnetic field generator of 48 kiloGauss. The instrument is called as K500 cyclotron.
Electrical methods:
Solid rock will conduct the electric current very strongly so the soundness is very high.
Gravity study:Gradiometers as very useful to find the gravity field. The presence of rocks will change the gravity value significantly.

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