Thendral Kumaresan

geology geophysics geography geologic model calculation simple linear model covariance geostatistics radiometric method radioactive method geophysical method applications of radioactive survey application ground survey geiger muller counter air borne survey radioactive survey radiometric survey geophysical survey salt water environment science technology causes of seawater intrusion ghyben-herzberg relation control measures geophysical methods hydrogeology hydrology coastal aquifer coastal area subsurface groundwater groundwater intrusion saline water intrusion sea water intrusion thin section project outcrop case study microscopic study trichy hills research rocks petrology divisions stratigraphy structure india physiography