Geosciences and Remote Sensing

GEOPHYSICS

Geophysics is the application of method of physics to the study of Earth. The rocks does not differ only by their microscopic or macroscopic properties studied field petrologists or geologists. They also differ by their physical and chemical properties. Hence as the rocks differ according to their origin, texture, structure, etc. they also differ by their magnetisation, density, resistivity, etc. However, modern geophysics organizations use a broader definition that includes water cycle including ice and snow; fluid dynamics of the oceans and atmosphere;  magnetism and electricity in the magnetosphere and ionosphere and the solar-terrestrial relations; and the analogous problems associated with  the Moon and the other planets. Geophysics is applied to societal needs, such as mitigation of natural hazards, mineral resources, and environmental protection. Geophysical survey data are used to analyse mineral deposits and potential petroleum reservoirs, locate groundwater, find archaeological relics, determine the thickness of the glaciers and soils, and assess sites for environmental remediation.