Geophysical Fields
GEOS 602
This course is no longer taught. This page documents the last time it was taught.
Spring 2010
TuTh 1:303:00, GI Auditorium
Instructor: Jeff Freymueller
x7286 Elvey 413B jfreymueller@alaska.eduLast Updated: January 20, 2010
Course Topics
 Gravity, gravitational field of earth, gravity measurement and interpretation
 Magnetics, magnetic field of earth, paleomagnetics, magnetic measurement and interpretation
 Heat in the earth, heat flow, conduction and convection
Grading Scheme
 60% Homework
 40% Final Project
Homework
 10 Problem Sets, roughly weekly
Final Project
 Numerical or computational project.
Detailed Schedule
Each lecture title is a link to the powerpoint file for that lecture.
Day 
Date 
Lecture Topic 
Thu 
Jan 21 
Gravity 1: What is a field?, Mathematical properties of scalar and
vector fields, Potential and field, Newtonian Attraction;

Thu 
Jan 26 
NO CLASS 
Thu 
Jan 28 
Gravity 2: Measurements of gravity, Potential of an arbitrary 3D body, Potential of a sphere 
Tue 
Feb 2 
Gravity 3: MacCullough's
formula, Earth's gravity field;

Thu 
Feb 4 
Gravity 4: The Geoid, Shape of the Earth, Introduction to orthogonal functions 
Tue 
Feb 9 
Gravity 5: Spherical Harmonics,
Application to the global gravity field;

Thu 
Feb 11 
Gravity 6: Satellite Measurements of the Gravity Field and gravity change 
Tue 
Feb 16 
Gravity 7: More gravity
change and spherical harmonics, Tides;

Thu 
Feb 18 
Gravity 8: Gravity surveys, Gravity Anomalies, Examples of gravity anomalies from the real world. 
Tue 
Feb 23 
Gravity 9: Modeling gravity anomalies, Attraction of special
mass distributions, Excess mass, Green's equivalent layer, Sinusoidallyvarying topography;

Thu 
Feb 25 
NO CLASS 
Tue 
Mar 2 
Gravity 10: Compensation,
Isostasy, Isostatic Anomalies, Gravity and lithospheric flexure

Thu 
Mar 4 
Gravity 11: Fourier methods, Upward and downward continuation. 
Tue 
Mar 9 
SPRING BREAK!! 
Thu 
Mar 11 
SPRING BREAK!! 
Tue 
Mar 16 
Gravity 12: Fourier methods, Application of Fourier methods to compensation 
Thu 
Mar 18 
Magnetics 1: Electricity and magnetism, Electric and magnetic fields, Magnetic field of the Earth, IGRF 
Tue 
Mar 23 
Magnetics 2: The dipole and
nondipole fields, Magnetization, Magnetic anomalies

Thu 
Mar 25 
Magnetics 3: Magnetization, Modeling magnetic anomalies, Total field anomaly 
Tue 
Mar 30 
Magnetics 4: Reduction to the pole,
Examples of magnetic anomaly maps, How rocks get their magnetization, Paleomagnetism,
Magnetic reversals and history of Earth's magnetic field

Thu 
Apr 1 

Tue 
Apr 6 
Initial Presentation of Final Project Topics 
Thu 
Apr 8 
Heat Flow 1: Heat transfer, Fourier's Law, Heat flow in the Earth

Tue 
Apr 13 
Heat Flow 2: Heat sources within the Earth and the geothermal gradient, Conduction 
Thu 
Apr 15 
Heat Flow 3: Conduction on a sphere, 1D timedependent conduction

Tue 
Apr 20 
Heat Flow 4: Heating or cooling of a semiinfinite halfspace, Cooling of oceanic crust 
Thu 
Apr 22 
Heat Flow 5: Advection 
Tue 
Apr 27 
Progress Reports on Final Projects 
Thu 
Apr 29 
Heat Flow 6: The Stefan problem and phase changes 
Tue 
Apr 27 
Heat Flow 7: Thermal stresses, mantle adiabats 
Thu 
Apr 29 
Heat Flow 8: Convection 
END OF CLASSES (but final Project due Fri May 14)
Dr. Jeffrey T. Freymueller
Professor of Geophysics
Geophysical Institute
University of Alaska, Fairbanks
Fairbanks, AK 997757320