Geophysical Surveys

Sub-surface imaging by means of geophysical survey is a powerful tool for archaeological site assessment and mapping which historically has been under-utilized in indian archaeology. Recent improvements in survey equipment performance and automation have made large area surveys with a high data sample density possible. Advances in processing and imaging software have made it possible to detect and interpret subtle patterns of cultural origin within the geophysical data. 

Some of the unique advantages of geophysical survey are: 

• Geophysical methods are non-intrusive, and are not destructive to site integrity 

• A survey can provide detailed evidence of occupation and activity not visible from surface information 

• Large areas mapped quickly and Inexpensively.

• A subsurface map of a site can be created before excavation is begun 

• Researchers can assess site patterning and integrity, and target specific cultural features for excavation while avoiding others 

• Geophysical data can complement excavation data, and allow researchers to understand excavation results within the entire site context