Geophysics investigates physical properties and processes of the Earth. Seismic, electromagnetic and gravity observations can help interpret subsurface conditions, with applications in resources, environmental enquiry and natural-hazard assessment.
Observations and subsurface interpretation
Seismic methods, electromagnetic surveys and gravity measurements provide different kinds of evidence about the Earth's interior. Interpreting a measurement requires understanding the method and the physical property it concerns. The Physics guide provides related foundations for interpreting measurements in terms of physical properties and processes.
Geological structures and geophysical anomalies can be compared to develop explanations of subsurface conditions. An anomaly is evidence to interpret, not a direct identification of a resource.
Environmental methods
Ground-penetrating radar and other methods can contribute to environmental and groundwater investigations. Their suitability and limits depend on the site and question.
Satellite-based remote sensing adds observations for environmental monitoring. It complements rather than automatically replaces subsurface methods.
Hazards, models and research
Seismic activity and other observations can contribute to natural-hazard assessment. This does not establish an ability to predict the exact time, place or magnitude of an earthquake or guarantee a volcanic forecast.
Sensors, satellite imagery and AI-based analysis offer different forms of evidence. A tool's output needs interpretation and evaluation.
Research directions include resource management, environmental assessment and seismic hazards. Actual project access, fieldwork and professional responsibilities depend on the programme and role.
Questions about geophysics
Does a geophysical anomaly identify a resource by itself?
No. It requires interpretation with other evidence and an understanding of the method's limits.
Does this overview establish exact earthquake prediction?
No. Hazard assessment and monitoring must not be confused with an exact-event prediction guarantee.
Related study
For a current programme outline or a specific study enquiry, use Contact.
The EPA overview of geophysical methods relates geophysics to measurements of physical properties and subsurface interpretation. It supplies external context for distinguishing a measurement method from the conclusion drawn from its evidence.
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