Download - Geophysics: Overview-2
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- 1. Introduction to Geophysics Ali O. Oncel [email_address] Department of Earth Sciences KFUPM Lecture 2 Overview
- 2. Geophysics
- Identify Geologic Problem
- Survey Plan
- Data Acquisition
- Data Reduction
- Data Analysis
- Modeling
- Write Report
- 3. What is Geophysics?
- Application of physics to studies of the Earth,Moon, and other planets
- Includes Earth, Atmosphere, Oceans, Planetarysystems
- 4. What is Geophysics?
- Solid-earth geophysics which isthe study of the earth by quantitative physical methods, thus excludingportions of other subjects
- Exploration geophysicsis the use of seismic, gravity,magnetic, electrical, electromagnetic, etc.,methods in the search for oil, gas, minerals,water,etc., with the objective of economic exploitation.
- 5. Examples of Geophysics
- Pure and Applied Geophysics
- Solid Earth
- Surface Geophysics
- 6. Applied Geophysics (economic objectives)
- Exploration Geophysics
- Engineering Geophysics
- Environmental Geophysics
- Groundwater Geophysics
- Archaeo Geophysics
- Forensics
- 7. Applications?
- Approach to earthquake hazards and ground survey
- Plate tectonics, the study of the interiorstructure of the earth
- Human's ability to exploit natural resources
- Engineering
- Environmental
- Hydrological
- 8. Examples of geophysical methods?
- Gravity
- 9. Examples of geophysical methods?
- Magnetics
- 10. Examples of geophysical methods? Seismics a. Reflection b. Refraction c. Surface or borehole
- 11. Examples of geophysical methods? Ground Penetrating Radar
- 12. Examples of geophysical methods?
- Resistivity
- 13. Geophysical Methods
- May not yield complete answer or unique solution; Non-uniqueness of forward modeling
- Many solutions, but which ones are nonsense, which are plausible
- Interpret within physical constraints & geological framework
- 14. Geophysics and Geology
- Geology places constraints on geophysical models
- Geophysics places constraints on geologic interpretations
- 15. Planning a Survey - Spatial Aliasing
- 16. Two and Three Dimensions Location of Profiles
- 17. Common Sources of Geophysical Noise
- 18. Data Processing - Elimination of Noise
- 19. Displaying Data
- 20. Summary
- Geophysics
- Applied (Environmental) Geophysics
- Gravity, Magnetic, Seismic, GPR & Resistivity
- Selection of Proper Technique
- Designing a Geophysical Survey