Gravity and Magnetic Methods of Geophysical Prospecting

Course Information
TitleΒΑΡΥΤΙΚΕΣ ΚΑΙ ΜΑΓΝΗΤΙΚΕΣ ΜΕΘΟΔΟΙ ΓΕΩΦΥΣΙΚΗΣ ΔΙΑΣΚΟΠΗΣΗΣ / Gravity and Magnetic Methods of Geophysical Prospecting
CodeNGGP 730E
Cycle / Level1st / Undergraduate
Teaching PeriodWinter
Course ID600019070

Programme of Study: PPS-Tmīma Geōlogías (2020-sīmera)

Registered students: 0
OrientationAttendance TypeSemesterYearECTS
KORMOSElective Courses745
GEŌFYSIKĪElective Course belonging to the selected specialization (Elective Specialization Course)745

Class Information
Academic Year2020 – 2021
Class PeriodWinter
Weekly Hours4
Class ID
Course Type 2016-2020
  • Scientific Area
Course Type 2011-2015
Knowledge Deepening / Consolidation
Mode of Delivery
  • Face to face
Digital Course Content
The course is also offered to exchange programme students.
Language of Instruction
  • Greek (Instruction, Examination)
  • English (Instruction, Examination)
Learning Outcomes
1) Understanding the basic principles of Gravity and Magnetic Methods of Geophysical Prospecting. 2) Rough design of a gravity or magnetic survey in relation to the expected subsurface structure. 3) Comprehension of the importance of measuring step in optimizing the scientific result with respect to available means. 4) Understanding the necessity of the reductions applied to gravity and magnetic readings. 5) Understanding the relation of Bouguer anomaly with the density variation at the upper layers of the Earth’s Crust. 6) The student will be able to “read” and qualitatively assess the Bouguer maps. 7) Understanding the relation between magnetic total field anomalies and variations of magnetization at the upper layers of the Earth’s Crust. 8) Understanding the necessity of aeromagnetic surveying at not easily accessible areas. 9) Understanding the way an aeromagnetic survey is carried out. 10) After the successful completion of the course the student will be able to read and qualitatively interpret ground and airborne magnetic maps. 11) Understanding the difference between induced and remanent magnetization. 12) After the successful completion of the course the students will be able to assess if a gravity and/or magnetic survey is needed and what it can be obtained for the solution of geological, geotechnical or archaeological problems. 13) After the successful completion of the course the students will be able to employ gravity and/or magnetic maps for the solution of geological, geotechnical or archaeological problems.
General Competences
  • Apply knowledge in practice
  • Retrieve, analyse and synthesise data and information, with the use of necessary technologies
  • Work in an international context
  • Work in an interdisciplinary team
Course Content (Syllabus)
Earth’s gravity field. General relations of the gravity field, Newton’s Law, basic principles of the gravity prospecting, density of rocks and minerals, gravity measurements and corrections, reductions of the readings and estimation of the free air and Bouguer anomalies, techniques for regional-residual separation, estimation of the density of the near surface strata of the Earth, processing and interpretation methods. Principles of the Magnetic Method of Geophysical Prospecting, quantities measured in magnetic surveying, magnetic susceptibility of rocks and minerals, instruments for magnetic surveying, design and conduct of a magnetic survey, processing and interpretation of the magnetic total field measurements or its first vertical difference, aeromagnetic surveying. Case studies of magnetic surveying in mineral exploration, in hydrocarbon reserves exploration, in studying and determining the Earth’s geological and tectonic subsurface structure, in Archaeology and Environmental studies.
Bouguer anomaly, free air anomaly, density, magnetic total field, magnetic induction, magnetic susceptibility, regional residual separation, potential fields, mineral and hydrocarbon exploration.
Educational Material Types
  • Notes
  • Video lectures
  • Interactive excersises
  • Book
Use of Information and Communication Technologies
Use of ICT
  • Use of ICT in Course Teaching
  • Use of ICT in Laboratory Teaching
  • Use of ICT in Communication with Students
  • Use of ICT in Student Assessment
1) All class material is available in electronic form to all students through the course web page 2) The teacher communicates with students through email and Facebook 3) The class evaluation is performed through the Quality Assurance Unit (MO.DI.P.)
Course Organization
Laboratory Work52
Reading Assigment31
Student Assessment
Quality management system of the Quality Assurance Unit (MO.DI.P.)
Student Assessment methods
  • Written Exam with Extended Answer Questions (Formative, Summative)
  • Written Assignment (Formative, Summative)
  • Written Exam with Problem Solving (Formative, Summative)
Course Bibliography (Eudoxus)
Παπαζάχος, Β.Κ. Εισαγωγή στη Εφαρμοσμένη Γεωφυσική. Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης, Θεσσαλονίκη, 1986. Παπαδόπουλος, Τ.Δ. Εισαγωγή στη Γεωφυσική. Εκδόσεις Νέων Τεχνολογιών. Αθήνα, ISBN 978-960-6759-49-9. Τσελέντης, Α. και Παρασκευόπουλος, Π. Εφαρμοσμένη Γεωφυσική. Liberal Books, Αθήνα, ISBN 978-618-5012-02-1.
Additional bibliography for study
Τσόκας, Γ.Ν., Γεωφυσική διασκόπηση με τις μεθόδους των δυναμικών πεδίων, Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης, Θεσσαλονίκη, 1999. Blakeley, R.J. Potential theory in gravity and magnetic applications. Cambridge University Press, New York, 1995. Boyd, J. Lecture notes on Potential Field methods. Colorado School of Mines, INTERNET address http:/, 1997. Chapin, D.A. The theory of the Bouguer anomaly: a tutorial. The Leading Edge, 15, 5, 361-363, 1996. Dobrin, M.B. and Savit, C.H. Introduction to geophysical prospecting. McGraw-Hill Book Company, New York , 1988. Garland, G.D. The Earth’s shape and gravity. Pergamon press, Oxford,1977. Parasnis, D.S. Principles of Applied Geophysics, Chapman and Hall, London, Fifth Edition, 1997. Sheriff, R.E. Encyclopedic dictionary of Exploration Geophysics, Society of Exploration Geophysicists, Tulsa, 1981. Telford, W.M., Geldart L.P. and Sheriff, R.E. Applied Geophysics, Cambridge University press, New York, 1993. Tsokas, G.N. and Hansen, R.O. Study of the crustal thickness and the subducting lithosphere in Greece from gravity data. Journal of Geophys. Research, 102, 20585-20597, 1997. Σημειώσεις διδάσκοντα
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