This is the 6739th most frequent Portuguese word.
geofísico
A "geofísico" is a geophysicist or something related to geophysics, the science studying Earth's physical properties and processes.
Here, 'geofísico' is used as a noun to describe a person specializing in the field of geophysics, employed directly without modification.
O geofísico estudou a composição das camadas da Terra.
The geophysicist studied the composition of Earth's layers.
In this case, 'geofísico' is used as an adjective to qualify the noun 'instrument', describing its application in geophysics.
O instrumento geofísico foi utilizado na pesquisa do solo.
The geophysical instrument was used in soil research.
Here, 'geofísico' is in its feminine form 'geofísica', acting as an adjective that modifies 'análise', reflecting the analysis' relation to geophysics.