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If the earth had a completely smooth surface and all the components form which it was made were all evenly mixed up, then the force of gravity would be the same at all points on its surface.
However the earth is not smooth , it has mountains and hollows in its surface and the rocks form which it is made are not evenly mixed, some surface rocks are heavy (dense) and some are light.
This means that as compared to the theoretical smooth earth gravity field, the real earth gravity field varies from point to point over the surface.
A gravity survey measures the small variations in the pull of gravity over the earth's surface and makes a map of these changes. This map helps geologists understand where the dense and light rocks are beneath the surface.
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MaxineA gravity survey is a geophysical technique used to measure variations in the Earth's gravitational field. By measuring these variations, geoscientists can deduce the distribution of subsurface density variations, which can provide valuable information about the composition and structure of the Earth's interior. This method is commonly used in mineral exploration, geothermal exploration, and oil and gas exploration.
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How do Geophysicists use gravity surveys?
Geophysicists use gravity surveys to map subsurface geological structures by measuring variations in gravitational pull caused by differences in rock density. This data helps in identifying underground features such as faults, mineral deposits, or oil reservoirs. Gravity surveys are commonly employed in oil and mineral exploration, as well as in environmental and engineering studies.
What is the noun form of survey?
The word 'survey' is both a noun (survey, surveys) and a verb (survey, surveys, surveying, surveyed).The noun 'survey' is a word for the gathering of data or opinions for the purpose of compiling statistics; an examination of an area of land in order to make a map of it; a general examination of a subject or situation.The noun forms of the verb to survey are surveyor and the gerund, surveying.
What is the conversion factor to convert meters to US survey feet?
US survey feet = Metres * 1200/3937
How isostatic adjustments affect isostasy?
Gravity.
What force is responsible for holding the stars gases and dust together in a galaxy?
The answer is simple: gravity.
