This is the 11033rd most frequent Russian word.
геофизических
"Geophysical."
Here, "геофизических" is used as an adjective to describe "processes"—geophysical processes, indicating their relation to the field of geophysics.
Сотрудники института участвуют в исследованиях геофизических процессов.
The institute staff participates in studies of geophysical processes.
In this sentence, "геофизических" qualifies "materials" to specify properties relating to materials studied within geophysics.
Сегодня мы будем изучать свойства геофизических материалов.
Today we will study the properties of geophysical materials.
Here, "геофизических" modifies "data," referring to data derived from or pertaining to geophysics.