A geophysical survey refers to a type of survey conducted to analyze the physical properties of the Earth's surface and subsurface. There are several synonyms for this term, including Earth science survey, geophysical exploration, geophysical mapping, geotechnical survey, and ground investigation. All these terms refer to a similar process of analyzing the physical characteristics of the Earth's surface and subsurface to identify underlying features and identify any potential issues. The main objective of a geophysical survey is to gather data for use in geological research, mineral exploration, and environmental studies. Regardless of the term used, the ultimate goal of a geophysical survey is to gain a better understanding of the characteristics of the Earth's surface and subsurface.