This course is designed to introduce the basics of gravity as one of the four forces that govern the Earth, as well as the devices used for measurement. It also addresses the gravitational probe method and how to process gravitational data, while the second part deals with the basics of the magnetic method and the Earth’s magnetic field and its origins. And the devices used for measurement. Then this course ends with the methods used to collect magnetic data and corrections resulting from internal and external changes.
Intended learning outcomes
By studying the course, the student will be able to:
will be familiar with the basic principles of gravity and magnetism.
will be familiar with the devices used to measure gravity and magnetism and how to use them.
Explain the uses of the method (magnetism and gravity) for exploration and search for oil and minerals
Teaching and learning methods
The course is taught using the following methods and techniques:
Lectures
Laboratory activities
Information gathering
Discussion groups
Methods of assessments
First midterm exam: 25% (written).
Second midterm exam: 25% (written).
Final exam: 50% (written).
Passing grade: 50% or above.
Overall course grade: 100%
Course contents
The
first week is a general review of gravity, the natural phenomenon of the Earth,
including its relationship to exploration, with an emphasis that the course
will only cover the basics of the gravitational method and the devices used in
it.
The
second week: gravitational force, gravitational acceleration, then
gravitational potential
The
third week, applying Newton’s law to masses of large dimensions, the
gravitational field and its relationship to exploring gravity,
The
fourth week: spherical changes in gravity, the balance of the Earth’s crust,
tensions based on absolute gravity measurements, and tides.
The
fifth week: Effects of gravity on subsurface bodies that have specific shapes.
The
sixth week: Gravity measurements on the ground, from the air, at sea, and in
wells
The
seventh week: gravity surveying, explaining its different types and where each
type is used, processing gravity data and interpreting it quantitatively.
The
eighth week, midterm evaluation
The
ninth week is a general review of magnetism, the natural phenomenon of the
Earth, the relationship of magnetism to exploring what is inside the Earth, and
knowing the basic principles of the method, with an emphasis on the fact that
the course includes the basic principles of the magnetic method and the devices
used in it.
Week
Ten: Basic concepts and definitions, magnetic force, magnetic field, magnetic
moment.
Week
Eleven: Intensity of magnetization or polarization, magnetic effect, magnetic
induction, residual magnetism.
The
twelfth week: magnetization of rocks, magnetic intensity panels, the total
magnetic field and its components, magnetic potential and the Poisson equation.
The
thirteenth week: Earth’s magnetism, magnetic elements and their properties, the
magnetic influence of rocks.
Week
Fourteen: Magnetic effects from buried magnetic objects
The
fifteenth week: magnetic surveying, explaining its different types and where
each type is used, processing magnetic data, eliminating the effect of the
poles, and interpreting it quantitatively.
